Rejoinder of Colombia

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16973
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Date of the Document
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Document

INTERNATIONAL COURT OF JUSTICE
____________________________________________

TERRITORIAL AND MARITIME DISPUTE

(NICARAGUA v. COLOMBIA)

REJOINDER OF THE

REPUBLIC OF COLOMBIA

VOLUME I

18 JUNE 2010 TABLE OF CONTENTS

Chapter 1. INTRODUCTION

A. Overview...............................................................................................................1

B. Nicaragua’s Drastic Changes of Position .............................................................3

C. Nicaragua’s Refusal to Accept the Court’s Judgment on Preliminary
Objectio...s..........................................................................................................7

D. Nicaragua’s Repleaded Case on Sovereignty and Delimitation.........................10
S) 1 ( OVEREIGNTY OVER THE CAYS ................................................................10
M) 2 ( ARITIME DELIMITATION ........................................................................19

E. Structure of this Rejoinder..................................................................................23

PART ONE – COLOMBIA’S SOVEREIGNTY OVER THE CAYS

Chapter 2. THE ARTIFICIAL CHARACTER OF NICARAGUA’S
TERRITORIAC LLAIM

A. Introduction .........................................................................................................29

B. Nicaragua Ignores the Basis of Colombian Sovereignty over the Cays.............31
T) 1 ( HE OVERWHELMING CASE FOR COLOMBIAN SOVEREIGNTY OVER

THE CAYS .................................................................................................31
N) 2 ( ICARAGUA ’S COMPLETE FAILURE TO RESPOND TO KEY ISSUES
RAISED INC OLOMBIA ’S COUNTER -MEMORIAL ........................................41

C. Nicaragua’s Continued Reliance on a Groundless Uti Possidetis Claim ...........44
N) 1 ( ICARAGUA ’S CONTRADICTORY ARGUMENTS CONCERNING UTI
POSSIDETIS...............................................................................................45
T) 2 ( HE SUPPOSED “UNITY” OF THE CAYS AND THE M OSQUITO C OAST .........48

N) 3 ( ICARAGUA ’S ADJACENCY ARGUMENT ...................................................52

D. Nicaragua’s Attempt to Distort the Scope of the 1928/1930 Treaty ..................59
T) 1 ( HE OBJECT AND PURPOSE OF THE 1928/1930T REATY ............................59T) 2 ( HE “SAN A NDRÉS ARCHIPELAGO ”IN A RTICLE ICOVERS ALL THE

CAYS ........................................................................................................62
N) 3 ( ICARAGUA ’S ERRONEOUS INTERPRETATION OF A RTICLEI,PARA . 2
OF THET REATY ........................................................................................68
T) 4 ( HE LIMITED SCOPE OF THE “M OSQUITO COAST ” INA RTICLE IOF

THE TREATY .............................................................................................70

E. Nicaragua’s Conduct Compared with that of Colombia.....................................77

FC. onclus.........................................................................................................80

Chapter 3. QUITASUEÑO

AI. troduct.......................................................................................................83

B. The Issues as Presented in the Pleadings............................................................84

C. The Applicable Law............................................................................................88

D. Existence of Islands and Low-tide Elevations on Quitasueño and their Legal

Consequenc .....................................................................................................94
I ) 1 ( SLANDS AND LOW TIDE ELEVATIONS ON Q UITASUEÑO ...........................98
L) 2 ( EGAL CONSEQUENCES OF THESE FACTS ...............................................101

E. Quitasueño as a Unit.........................................................................................103

FC. onclusi.....................................................................................................109

PART TWO – MARITIME DELIMITATION

Chapter 4. NICARAGUA’S FUNDAMENTAL CHANGE OF POSITION

A. Nicaragua’s Abandonment of Its Single Maritime Boundary Claim................113
V) 1 ( INDICATION OF C OLOMBIA S POSITION ................................................114
T) 2 ( HE IRRELEVANCE OF GEOLOGY AND GEOMORPHOLOGY .......................118

N) 3 ( ICARAGUA ’S NEW CLAIM IS EVEN MORE EXTREME THAN THE
CLAIM ADVANCED IN ITS M EMORIAL ......................................................122 B. Nicaragua’s New Continental Shelf Claim Is Inadmissible: The Issue for
the Court Remains the Delimitation of a Single Maritime Boundary ..............122

C. Nicaragua’s New Continental Shelf Claim Has No Merit................................136
T) 1 ( HERE ARE NO AREAS OF EXTENDED CONTINENTAL SHELF IN THE
WESTERN CARIBBEAN ............................................................................136
A) 2 ( RTICLE 76 OF THE UNITED N ATIONS C ONVENTION .............................139

T) 3 ( HE OUTER LIMITS OF AN EXTENDED CONTINENTAL SHELF CLAIM
MUST BE SUBMITTED TO THE UNITED N ATIONS C OMMISSION ,
NOT THE COURT ,AND MUST BE BASED ON THE COMMISSION S

RECOMMENDATIONS ..............................................................................140
N) 4 ( ICARAGUA HAS NOT PROVED THE LIMITS OF ITS OWN
CONTINENTAL MARGIN AND THE OUTER LIMIT OF C OLOMBIA ’S
MARGIN FROM ITS MAINLAND COAST IS IRRELEVANT .............................144

E) 5 ( XTENDED CONTINENTAL SHELF CLAIMS DO NOT TRUMP 200 NAUTICAL
MILE ENTITLEMENTS ..............................................................................149

DC.onclusio.....................................................................................................156

Chapter 5. THE AREA OF DELIMITATION

A. The Delimitation Concerns the Area Lying between Nicaragua’s Coast and
Colombia’s San Andrés Archipelago................................................................160
T) 1 ( HIS IS NOT A CASE OF DELIMITATION BETWEEN MAINLAND COASTS .....160

C) 2 ( OLOMBIA ’S ISLANDS GENERATE THEIR OWN MARITIME
ENTITLEMENTS .......................................................................................168
T) 3 ( HE RELEVANT DELIMITATION AREA IS THE AREA BETWEEN THE

P ARTIES’RELEVANT COASTS .................................................................184
N) 4 ( ICARAGUA ’S INCONSISTENT POSITION WITH RESPECT TO ITS OWN
ISLANDS .................................................................................................189

B. The Position of Third States .............................................................................192
T) 1 ( HE NEED TO TAKE INTO ACCOUNT THE PRESENCE OF THIRD STATES ....192
(2) T HE PRESENCE OF THIRD STATES AND EXISTING DELIMITATION

AGREEMENTS BEARING ON THE IDENTIFICATION OF THE
DELIMITATION AREA ..............................................................................194 Chapter 6. APPLICATION OF THE PRINCIPLES AND RULES OF
DELIMITATION: ESTABLISHING THE PROVISIONAL
EQUIDISTANCE LINE AS THE FIRST STEP IN THE

DELIMITATION

AI. troduct.....................................................................................................197

B. Equidistance as the First Step...........................................................................200
L) 1 ( IBYA -M ALTA .......................................................................................200
G) 2 ( REENLAND -JAN M AYEN ......................................................................202
Q) 3 ( ATAR -B AHRAIN ...................................................................................205
C) 4 ( AMEROON -NIGERIA .............................................................................208

R) 5 ( OMANIA -UKRAINE ...............................................................................210
O) 6 ( THER PRECEDENTS ..............................................................................211
C) 7 ( ONCLUSIONS AS TO THE ESTABLISHMENT OF THE PROVISIONAL
EQUIDISTANCE LINE AS A FIRST STEP ......................................................212

C. Even Where the Plotting of a Provisional Equidistance Line Is Not Practical,
Equidistance Remains the Rule ........................................................................215

D. Colombia’s Delimitation Respects, and Is Consistent with, the Law...............218

EN. icaragu’sainlCdo...t.........................................................................228

F. Nicaragua’s Claims Ignore the Law .................................................................232

GC.onclusio.....................................................................................................233

Chapter 7. NICARAGUA’S ENCLAVE THEORY

AI. troduct.....................................................................................................235

B. Islands Have Never Been Enclaved in the Situation that Exists in the Present
Case ...............................................................................................................237

T) 1 ( HE BASIC GEOGRAPHIC FACTS ..............................................................237
T) 2 ( HIS SITUATION DISTINGUISHES THE PRESENT CASE FROM THE EXAMPLES
CITED BY NICARAGUA ............................................................................241 C. Small Islands Have Frequently Received Full Effect in Maritime
Delimitations .....................................................................................................254
S) 1 ( TATE PRACTICE GENERALLY ................................................................254
R) 2 ( EGIONAL PRACTICE IN THE SOUTHWEST CARIBBEAN ...........................267

D.onclusio......................................................................................................270

Chapter 8. REFLECTING THE RELEVANT CIRCUMSTANCES

A. troducti.....................................................................................................273

B. The Absence of Any Nicaraguan Presence in the Waters of the
San Andrés Archipelago...................................................................................275

C. The Relevance of the 82°W Meridian ..............................................................281

D. Resource and Security Factors..........................................................................290
R) 1 ( ESOURCE MANAGEMENT AND CONTROL ..............................................290
C) 2 ( OLOMBIA ’S UNDERTAKING OF SECURITY MEASURES ...........................297

E. Geographic Factors and Proportionality...........................................................306

F. Interests of Third States....................................................................................311

G.onclusio......................................................................................................314

PART THREE – OTHER MATTERS

Chapter 9. NICARAGUA’S REQUEST FOR A DECLARATION ..................319

SUMMARY ...............................................................................................................327

SUBMISSIONS ...........................................................................................................337

LIST OF APPENDICES, ANNEXES AND MAPS (VOLUME II) .......................339 INTERNATIONAL COURT OF JUSTICE

TERRITORIAL AND MARITIME DISPUTE

(NICARAGUA v. COLOMBIA)

REJOINDER OF THE REPUBLIC OF COLOMBIA

Chapter 1

INTRODUCTION

A. Overview

1.1. This Rejoinder is filed in accordance with the Court’s

Order of 18 December 2008. It responds to Nicaragua’Reply

of 18 September 2009 and focuses on issues that continue to
divide the Parties.

1.2. The Reply makes very little attempt to deal with
Colombia’s case on sovereignty over those components of the

Archipelago left open by the Court in its decision of 13

December 2007 (hereafter referred to collectively as “the cays”).
Chapter I of Nicaragua’s Reply spends only 33 pages on “The

Issue of Sovereignty” (as compared with 174 pages in Chapters

II-VII on maritime delimitation).

1.3. In consequence, many of the arguments, and many items

of evidence, presented by Colombia in thCounter-Memorial

1are simply not responded to in the Reply. For example in the

Counter-Memorial, Colombia set out in detail the array of

effectivités it has exercised over the Archipelago, including all

the cays, in the years since independence; and showed that

Nicaragua had by contrast done nothing whatever by way of the

exercise of State authority over any of the islands, individually
1
or collectively. Indeed, for long periods of time, throughout the
th 2
19 century up until 1913, and then in the years from 1928 to
3
1980, Nicaragua simply accepted Colombian sovereignty.
4
None of this does Nicaragua’s Reply contest or deny.

1.4. The Court can therefore proceed on the basis that, as

between the parties to this case, 5 only Colombia has ever

administered à titre de souverain any of the islands and related

features which are at stake, in the 200 years since its

independence; that this administration has been peaceful and

(for most of the time) uncontested, and that it has been widely

1
Colombia’s Counter-Memorial (hereafter CCM) CM, Chapters 2-3,
esp. pp. 88-146. The de scription of Colombia’s effectivités occupies more
space than the entire treatment of the sovereignty dispute in Nicaragua’s
Reply (hereafter NR).
2 Nicaragua’s first general claim to the Archipelago was made in
1913: see CCM, para. 6.6.
3 Nicaragua claimed Quitasueño, Roncad or and Serran a in 1972; its

claim to the whole Archipelago, based on th e “invalidity” of the 1928/1930
Treaty, only came in 1980: see CCM, paras. 6.7-6.8. For the variability of
4icaragua’s claim, see CCM, paras. 6.5-6.11.
For other examples of issues to which Nicaragua failed to respond,
see below, paras. 2.19, 2.22, 2.58.
5 There have been claims to individual features by third States, always
resolved in Colombia’s favour by treaty. See as to the United States
(Quitasueño, Roncador, Serrana), CCM , paras. 4.51-4.59; as to Honduras

(Serranilla), CCM, paras. 4.163-4.166.

2recognized by third States, including (for most of the time)

Nicaragua.

1.5. Territorial disputes normally involve some combination

of (1) original title; (2) effectivités; (3) recognition; (4)

sometimes a treaty is determinative (if it is a treaty allocating

territory or fixing a boundary, it will be presumed to resolve the
territorial or boundary problem completely and definitively 6);

and (5) a background factor, the maxim quieta non movere –

respect for long, uncontested and peaceful possession. It is a

feature of the present case that all five elements or factors

favour Colombia, while Nicaragua gains no support from any of
them. Instead, Nicaragua posits an untenable interpretation of

the 1928/1930 Treaty, disregarding its real scope as an

instrument recognizing Colombia’s sovereignty over the San

Andrés Archipelago, including all the islands to the east of the

82°W meridian, and settling definitively the territorial dispute
between the two States.

B. Nicaragua’s Drastic Changes of Position

1.6. A second feature of the Reply is equally obvious:

Nicaragua has completely recast its case both on sovereignty
and on delimitation. The case began as a claim (predicated on

the invalidity of the 1928/1930 Treaty) to the islands comprising

6 See Territorial Dispute (Libyan Arab Jamahiriya/Chad), Judgment,
I.C.J. Reports 1994, p. 6, 23-24, para. 47, citing Interpretation of Article 3,
Paragraph 2, of the Treaty of L ausanne, Advisory Opini on, 1925, P.C.I.J.,
Series B, No .12, p. 20; Sovereignty over Certain Frontier Land
(Belgium/Netherlands), Judgment, I.C.J. Reports 1959, p. 209, 221-222.

3the San Andrés Archipelago (though Nicaragua omitted some

individual islands, which had to be added later, as an after-

thought ). There was also a claim to a single maritime boundary

drawn as an approximate median line between mainland coasts.

1.7. Ihe Reply the cases made on these two fronts have

completely changed. This is not the normal modulation of

argument which occurs in the course of pleading; it is a

complete transformation on both fronts. It may be illustrated by

comparing the positions taken by Nicaragua in its Application

with those taken in the Reply. For example:

x The Application claimed title on the basis of uti

possidetis, the Treaty of 1928/1930 being invalid. 9

x The Application treated all the cays as part of the San

Andrés Archipelago except Roncador, Quitasueño,
10
Serrana and Serranilla.

x The Application accepted the fundamental premise of

maritime delimitation, that land sovereignty is a

11
“condition precedent” to maritime delimitation.

x The Application sought a single maritime boundary,

including delimitation of the EEZ. 12

7 See CCM, paras. 6.9-6.10.
8 Nicaraguan Application, para. 2.
9 Nicaraguan Application, para. 4.
10
11 Nicaraguan Application, paras. 2, 8.
12 Nicaraguan Application, para. 3.
Nicaraguan Application, paras. 3, 4, 5, 8.

41.8. In each of these respects, Nicaragua’s Reply takes a

totally different, contradictory position.

x The Reply disavows reliance on uti possidetis (though

without formally abandoning it). 13 Instead, the question

is one of the interpretation of the Treaty of 1928/1930.

That Treaty is read – implausibly – as reserving to

Nicaragua not merely all islands west of the 82°W

meridian, which is what it was intended to do, but all

cays to the east of that meridian which are not proved to
14
be part of the Archipelago. It is also read – also
implausibly – as making a renvoi to the uti possidetis of

1810/1821, rather than as finally settling the dispute

between the parties over the Archipelago which broke

out in 1913. 15

x The Reply presumes that “[o]n the basis of the 1928

Treaty”, only the three islands of San Andrés,

Providencia and Santa Catalina are part of the
Archipelago; all other features are not unless otherwise

shown. Moreover, if not part of the Archipelago, the

cays belong to Nicaragua by virtue of its sovereignty

over the Mosquito Coast and “offshore maritime

features”. 16This is a remarkable interpretation of a

Treaty which (a) recognizes as Colombian “all the other

islands, islets and cays that form part of the said

13 NR, p. 8 (para. 21).
14 NR, p. 4 (para. 13).
15 NR, para. 1.15. Cf. NR, para. 1.64 (the time of independence is
said to be “the moment of determination of title”).
16 NR, p. 4 (para. 13), p. 5 (para. 14).

5 Archipelago”; (b) establishes the 82°W meridian as the
western limit of the Archipelago, by which was meant, in

the words of Nicaraguan Foreign Minister at the time,

“the geographical boundary between the archipelagos in

dispute”, 17and (c) does not name as Nicaraguan any

offshore features other than the Corn Islands.

x The Reply affirms Nicaraguan sovereignty over the cays

on the basis that they are on an asserted Nicaraguan

continental shelf. For Nicaragua now the shelf

dominates the land. 18

x The Reply denies that the Court should draw a single

maritime boundary, arguing instead for a continental
shelf delimitation based on alleged geomorphological

considerations in an area well within 200 nm of

Colombia’s mainland coasts and the coasts of its islands,

and well beyond 200 nm from Nicaragua. 19

1.9. These extraordinary twists and turns raise a question as

to the admissibility of Nicaragua’s new claims, especially to

outer continental shelf: this is dealt with in Chapter 4 of this

Rejoinder. For present purposes, however, Colombia merely
observes that the credibility of Nicaragua’s positions in the

Reply is surely affected by the confident manner in which it had

earlier affirmed quite different propositions.

17 See CCM, para. 5.45, citing CCM Annex 199.
18 NR, p. 6 (para. 16), para. 4.1.
19 NR, Chapter III.

6 C. NicaraguaR ’sefusal to Accept the Court’s
Judgment on Preliminary Objections

1.10. Not the least remarkable feature of the Reply is

Nicaragua’s effective refusal to accept the Court’s decision of

13 December 2007 on the Preliminary Objections.

1.11. The point is made in the following passage of the Reply:

“9. Nicaragua also understands that the
jurisdiction of the Court is only available on the

basis that the 1928 Treaty is valid. Nicaragua
accepts the decision of the Court and the
conditions under which jurisdiction has been
recognized and will accordingly adapt and adjust
her petitions and submissions within the limits
set in the 13 December 2007 Judgment.

10. Nicaragua’s acceptance of the conditions
under which jurisdiction has been recognized
does not imply that she has changed or

renounced her historical claim that the 1928
Treaty was imposed on Nicaragua and lacks any
legal or moral authority. To the full extent that it
is legally permissible in the present
circumstances, Nicaragua will continue to reserve
her position on all these issues.”0

1.12. What moral authority Nicaragua could possibly have

over a substantial Colombian population, inhabiting an
archipelago which has been peacefully administered as part of

Colombia for two centuries, it is impossible to understand. But

the Court is the judge of legal authority, not Nicaragua, and the

assertion that the 1928 Treaty lacks “any legal… authority” is
extraordinary, not to mention disrespectful to the Court. The

20 NR, p.3 (paras. 9-10).

7Court found that it lacked jurisdiction over Nicaragua’s claim
(as concerns San Andrés, Providencia and Santa Catalina)

because the Treaty settled the question of sovereignty over the

San Andrés Archipelago as a whole, and over the three named

islands, and was valid. This finding is res judicata, binding on

both parties.21 As the Court said:

“81. In light of all the foregoing, the Court finds

that the 1928 Treaty was valid and in force on the
date of the conclusion of the Pact of Bogotá in
1948, the date by reference to which the Court

must decide on the applicability of the provisions
of Article VI of the Pact of Bogotá setting out an
exception to the Court’s jurisdiction under
Article XXXI thereof.

88. The Court considers that it is clear on the
face of the text of Article I that the matter of
sovereignty over the islands of San Andrés,

Providencia and Santa Catalina has been settled
by the 1928 Treaty within the meaning of Article
VI of the Pact of Bogotá. In the Court’s view

there is no need to go further into the
interpretation of the Treaty to reach that
conclusion and there is nothing relating to this
issue that could be ascertained only on the
22
merits.”

21 Cf. Oil Platforms (Islamic Republic of Iran v. United States of
America), Preliminary Objection, Judgment, I. C.J. Reports 1996p. 803,
814-815 (paras. 28-32); Oil Platforms (Islamic Republic of Irv. United
States of America), Judgment, I.C.J. Reports 2003, p. 161, 178 (para. 31).
22 Emphasis added. The dissentie nts disagreed with the Court
deciding the issue at the stage of PreliminarObjections; none of them,
however, expressed doubt as to the outcome. See Judgment of 13 December
2007, Vice President Al-Khasawneh, para. 2; Judge Ranjeva, para 11; Judge
Abraham, para. 32. Cf. Judge Simma, p. 4.

81.13. As the Court held, the dispute concerning sovereignty

over the Archipelago, including the three named islands, was

settled as between Colombia and Nicaragua when the 1928/1930

Treaty came into force. There is no legal basis whatever for

Nicaragua to “continue to reserve her position on all these
23
issues.”

1.14. Indeed, it is inconsistent with good faith in the

settlement of disputes before the Court for a State party – more

especially a Claimant State – to reserve its alleged legal rights,

contrary to a decision of the Court binding on it, while calling

on the Court to grant it further relief. Yet that is precisely what

Nicaragua does here. It says:

“the 13 December 2007 Judgment determined
that the Court had no jurisdiction to consider the

dispute over the sovereignty over these features.
Hence, Nicaragua is proceeding in this case
within the limits of the jurisdiction granted by
the Court [sic]; that is, for the purposes of this

case those islands will be co24idered under the
sovereignty of Colombia.”

But the Court cannot delimit maritime areas on a hypothesis.

Nor can a Claimant State assert that it only accepts a decision,

on the basis of which it calls on the Court to act in its judicial

capacity, “for the purposes of this case”. When this case is over,

what will happen then?

23 NR, para. 10.
24
NR, para 2.12 (emphasis added). See also NR, para. 4.1 (“the
claims to sovereignty presently made in this Reply” (emphasis added); these
words imply that other claims to sovereignty may be made on other
occasions).

91.15. The point is highly material to the future of the

Archipelago. Figure NR-6-10 shows Nicaragua’s maximalist

maritime claim, which enclaves the islands and cays at 12 nm

for the larger ones and 3 nm for the rest. It will be seen that the
unity of the Archipelago is destroyed. And since Nicaragua’s

acceptance of Colombian sovereignty is only a deemed and

temporary acceptance (“for the purposes of this case those

islands will be considered under the sovereignty of
25
Colombia” ), how long will that situation last? After all,
Nicaragua now professes to believe – though the Court has

repeatedly denied it – that continental shelf rights determine

sovereignty over islands, and trump EEZ rights into the bargain!

D. Nicaragua’s Repleaded Case on Sovereignty and
Delimitation

1.16. As set out in the Reply, Nicaragua’s latest case is as

follows:

(1) S OVEREIGNTY OVER THE CAYS

1.17. Subject to various “reservations”, notably the reservation
26
of its original claim to the Archipelago, Nicaragua “adapt[s]”
that claim, transforming it into a claim to islands allegedly not

part of the Archipelago. Moreover, according to Nicaragua, the

onus of proof in this matter is on Colombia, despite Nicaragua’s

status as Applicant.

25 NR, para 2.12.
26 NR, para. 1.1

10 “13. On the basis of the 1928 Treaty, the
position of Nicaragua is that the recognition of
sovereignty over the Mosquito Coast includes all
the appurtenant rights of that Coast to its off-

shore maritime features. These maritime features
include all those not proven to be part of the ‘San
Andrés Archipelago’ which is recognized in that
Treaty to appertain to Colombia.” 27

1.18. But Nicaragua is a claimant to sovereignty over islands

long administered as part of Colombia (and never administered

by Nicaragua). As such, the onus of proof is squarely on it to

establish title. Actori incumbit probatio ; if Nicaragua claims

any individual feature, it has to make out its claim, something it
28
has wholly failed to do. It is a desperate argument to assert
that, unless Colombia can prove that the various islands were

part of the Archipelago in 1810, they were considered part of the

Mosquito Coast and thus Nicaraguan. It is also a non sequitur.

If the Islands were not definitively attributed to any State by the

uti possidetis principle, and if sovereignty was not finally

determined by the 1928/1930 Treaty – quod non , because of the

Treaty’s text itself and the limit of the 82°W meridian –, then

27 NR, p.4 (para. 13) (see also paras 1.39-1.44). Th e passage from
CCM, para. 1.9 cited by Nicaragua in support, does not say the same thing at
all. Following the Judgmen t of 13 December 2007, it is sufficient for
Colombian sovereignty that a feature was part of the Archipelago in 1930.
But it is not necessary: if (for the sake of argument) some feature was held
not to be part of the Archipelago, that does not mean that it is Nicaraguan.
28 Cf. Case concerning Pulp Mills on the River Uruguay (Argentina v.
Uruguay), Judgment of 20 April 2010, paras. 162-164.

11 29
sovereignty would be determined by the balance of effectivités.

In the present case, that balance is all one way.

1.19. Apart from considerations relating to the onus of proof,

Nicaragua’s adapted case is as follows:

(1) “[A]ll questions relating to the territorial dispute can be

resolved by reference to” the 1928/1930 Treaty; 30

questions of uti possidetis are “not relevant” 31; “the issue

is not whether Nicaragua or Colombia had the better title

over the territories in dispute at independence, since it

must be accepted… that each had a perfect title as from
32
the 1928 Treaty.”

(2) But by reference to the 1928/1930 Treaty, Nicaragua in

effect reintroduces the uti possidetis argument by the

back door:

“Since both Parties can lay claim to original
title over their respective areas based on the
uti possidetis iuris at the moment of

Independence, the consequence of the 1928
Treaty is that both parties can claim an
original or derived title based on the uti

possidetis iuris at the time of the
independence of Nicaragua in 1821 or at the

29 See Case concerning Territoria l and Maritime Dispute between

Nicaragua and Honduras in the Caribbean Sea (Nicaragua v Honduras),
Judgment of 8 October 2007, paras. 161- 164. Nicaragua protests (NR, p. 8,
fn 13) that the Court’s obiter dictum in Nicaragua/Honduras “does not have
the effect of res iudicata”. Being between different parties obviously it could
not have that effect. It was nonetheless a considered statement, and it is
equally relevant here.
30 NR, para. 1.3.
31 NR, para. 1.3.
32 NR, para. 1.64.

12 time of33he independence of Colombia in
1810.”

Of course this is not at all what the Treaty says. The

intention was to definitively settle the dispute arising

from the Nicaraguan claim of 1913, not to leave

sovereignty over the various islands, islets and cays

indeterminate by reference to a criterion of the uti

possidetis of 1810 or 1821. The Treaty is clear on this,
34
as are the travaux. The Treaty – Nicaragua itself

accepts this – divided the five named features, all part of

Colombia according to the uti possidetis, two going to
Nicaragua (the Corn Islands), three to Colombia. The

82°W meridian was defined as the western limit of the

Archipelago and therefore, “ all the other islands, islets

and cays” to the east of that limit, belonging to and

administered by Colombia as part of the Archipelago,

were allocated to Colombia.

(3) In fact Nicaragua was perfectly aware of the extent of the

Archipelago. That was stated with precision in a Report

by Foreign Minister Holguín to the Colombian Congress

in 1896 (after the dispute with Nicaragua concerning the

33 NR, para. 1.15.
34 See CCM, paras. 5.38-5.58. For example, the Nicaraguan Minister
of Foreign Affairs is recorded as describing the 82°W meridian to the Senate,
the day before its approval of th e Treaty, as “the geographic limit between
the archipelagos in d ispute without which it could not be settled the matter
completely”: Nicaragua’s Memorial (hereafter NM), Annex 80, p. 259. The
passage is annexed to NM but is cited in neither NM nor NR. (Colombia’s
translation, at Annex 199 and cited in CCM para. 5.54 reads as follows: “the
geographical boundary between the ar chipelagos in dispute, without which
the question would not be completely defined.”)

13 Corn Islands had broken out), to which Nicaragua does

not respond. 35 It was equally summed up by the

Colombian Ambassador to Nicaragua, Esguerra, in a

letter of 27 November 1927, referring to his negotiations

with Nicaragua on the Treaty, to which, equally,
36
Nicaragua does not respond. Colombia’s peaceful

exercise of sovereignty and jurisdiction over all of the

Archipelago’s components was explicit and publicly
37
displayed.

(4) The distinction between the Archipelago and “the

Nicaraguan Mosquitia” – as well as the intent to “put[]

an end to the question pending between both Republics

regarding” the two – was repeatedly expressed in

Colombian and Nicaraguan official documents of the

time, among which are the following:

(a) in the Official Opinion of the Nicaraguan

Government on the End of the Dispute with

35
CCM, paras. 2.59-2.60, and CCM Annex 89: “Colombia has upheld,
upholds and will continue to uphold, until the end of time, that the islands of
the Archipelago of San Andrés, formed by three groups of islands that spread
from the coasts of Central America, facing Nicaragua, to the cay of Serranilla
between latitude 15°52 north and lo ngitude 80°20 west of the Greenwich
meridian, the first of these groups being formed by the islands of Providencia
and Santa Catalina and the cays of Roncador, Quitasueño, Serrana, Serranilla
and Bajo Nuevo; the islands of San Andrés and the cays of Alburquerque,
Courtown Bank and others of less im portance, forming the second; and the
islands of San Luis de Mangle, such as Mangle Grande, Mangle Chico and
the cays of Las Perlas forming the th ird, as well as the Mosquito Coast, are

36s property and belong to it by inheritance, under the uti possidetis of 1810.”
37 CCM, paras. 2.67-2.68 and CCM Annex 112.
See, for instance, Colombian Official Journals in CCM, Annexes 73,
75, 79-81, 86, 90, 93, 96 -97, 99, 100 and 110 (Guano Contracts and related
provisions). See also, e.g., CCM, Anne xes 72, 76, 85, 87, 89, 91-92, 94-95,
and 104-109.

14 Colombia, 22 September 1928; 38

(b) in the Nicaraguan Congressional Decree

approving the 1928/1930 Treaty, 6 March
39
1930;

(c) by the Nicaraguan Chamber of Deputies in

its resolution of 3 April 1930; 40

(d)in the fu ll powers from the Nicaraguan

President to the Nicaraguan Foreign Minister,
41
9 April 1930;

(e)In the 1930 Report to Congress by the

Nicaraguan Foreign Minister concerning the
42
1928/1930 Treaty.

(5) In any event, for the reasons stated in the Counter-

Memorial and developed further in Chapter 2, the uti

possidetis of 1810 supported the jurisdiction of the Vice-

Royalty of Santa Fe (New Granada), not that of

Guatemala – i.e. of Colombia, not Nicaragua. 43 The uti

possidetis of course related to the Archipelago as a

whole, not to individual cays. The uti possidetis

argument cannot be made to fit with Nicaragua’s

“adapted” case on sovereignty, which does concern

individual cays.

38 CCM, Annex 196.
39 Colombia’s Preliminary Objections (hereafter CPO), Annex 10.
40
41 CCM, para. 5.55, and CPO, Annex 10.
42 CCM, Annex 200.
43 CCM, Annex 201.
CCM, paras. 3.7-3.15.

15 (6) As to the three other named cays of the Archipelago in

Article I of the 1928 Treaty (i.e., Roncador, Quitasueño

and Serrana), Nicaragua makes the following points:

(a) The cays “do not form part of the San Andrés

Archipelago”; 44

(b) Article I did not involve a relinquishment of

claim by Nicaragua; 45

(c) if Colombia cannot prove the features were

part of the Archipelago, then they

“appertained to [the] coast”, in effect, an
46
argument from contiguity.

(7) None of these arguments will do, for reasons explained

in the Counter-Memorial and further in Chapter 2:

(a) the three features were expressed to be part

of the Archipelago as shown by numerous

documents cited in the Colombian Counter-

Memorial, e.g., by the prefect of the National

Territory of San Andrés in 1871, 47 by the

British Colonial Office in 1874, 48 by the

Governor of Jamaica in 1875, 49 by the

Prefecture of the Province of Providencia in

1890, by Foreign Minister Marco Fidel

44
45 NR, para. 1.88.
NR, paras. 1.90-1.91.
46 NR, para. 1.96.
47 CCM, para. 2.49.
48 CCM, para. 2.50.
49 CCM, para. 2.52.
50
CCM, para. 2.53.

16 51
Suarez in 1894, by Foreign Minister
52
Holguín in 1896, by the guano extraction

contracts approved by the National
53
Congress, and by the Colombian

Ambassador to Nicaragua, Esguerra, in

1927, among others. Colombia furnished

similar evidence with regard to the cays’

appurtenance to the Archipelago with regard

to the 20 thcentury prior to 1928 55 and from

the conclusion of the 1928 Treaty to date. 56

Moreover, the cays as part of the Archipelago

were consistently depicted as such on
57
Colombian maps and charts;

(b) Article I is not a relinquishment of a declared

claim because in 1928 there was no separate

Nicaraguan claim to the three features; rather

it is powerful evidence that Nicaragua

entertained no such claim; if it had done so,

Article I would have been worded
58
differently;

(c) arguments from mere contiguity or proximity

to the coast of features beyond the coastal

51 CCM, paras. 2.55 and 2.56.
52
53 CCM, para. 2.59.
54 CCM, para. 2.57.
CCM, para. 2.68.
55 CCM, paras. 2.62 to 2.70.
56 CCM, paras. 2.67 and ff.
57 See CCM, paras. 2.79-2.97, 3.117-3.125.
58 See CCM, paras. 4.36-4.47.

17 territorial sea, in the absence of effectivités,

have no validity. 59 In any event the three

features are not contiguous or proximate to

the Nicaraguan coast.

1.20. With regard to Quitasueño, Nicaragua has both

contradicted itself and is wrong on the facts. First, Nicaragua’s

pleadings in the present proceedings refer to Quitasueño as a

“bank” while in the 1928 Treaty it had referred to it as a “cay”,

in the same way as for Roncador and Serrana; secondly, it now

denies that it is being capable of appropriation, while in the
1928 Treaty it recognized that sovereignty was in fact in dispute

between Colombia and a third State. Likewise, the official

notification by Colombia to the Nicaraguan Government and

Congress of the 1928 Colombia-United States Agreement

referred to the features as “cays”, expressly mentioned that they

were part of the San Andrés Archipelago and was never

objected to by Nicaragua.

1.21. Asto in situ evidence on the characteristics of

Quitasueño, only Colombia has provided any. It submitted the

report on a survey conducted by its Navy in 2008 with its

Counter-Memorial. Given the position taken in the Reply,

Colombia has had it further verified by an expert report, finding
34 islands and 20 low-tide elevations on Quitasueño. 60

59
See CCM, para. 6.15, citing Territorial and Maritime Dispute
between Nicaragua and Honduras in the Caribbean Sea (Nicaragua v.
60nduras), Judgment of 8 October 2007, p.25, para. 75.
See below, Chapter 3, and for the Smith Report see Appendix 1.

181.22. In fact Colombia has exercised its sovereignty and

jurisdiction over Quitasueño in the same public, peaceful and

uninterrupted manner as over the other islands and cays of the

Archipelago.

1.23. For these reasons, Nicaragua fails to mount a credible

case on sovereignty, in substitution for its claim to the whole
Archipelago, made in the Memorial and rejected by the Court in

limine. Moreover there is a striking contrast between the

suggestion that the onus of proving sovereignty belongs to the

Respondent State and the numerous arguments and documents
produced by Colombia in its Counter-Memorial to which

Nicaragua has failed to respond. Further examples will be

given, as relevant, in later Chapters of this Rejoinder, with
reference to the Counter-Memorial which remains, especially as

to territorial sovereignty, the definitive statement of Colombia’s

case.

1.24. In short, Nicaragua has failed to make out a coherent

alternative case for sovereignty over any of the cays – its

primary case having failed at the Preliminary Objections stage.
In essentials the case is reduced to one about maritime

delimitation between the Colombian islands and Nicaragua’s

relevant coasts.

(2) M ARITIME DELIMITATION

1.25. Turning to that maritime delimitation case, Nicaragua’s

Reply presents a new and fundamentally different claim than

19was the subject of its Application and Memorial and even as
presented in its Observations at the Preliminary Objections stage

of the case. In those pleadings, Nicaragua requested the Court

to delimit a single maritime boundary between the Parties based

on a mainland to mainland median line. Geology and

geomorphology were deemed by Nicaragua to be irrelevant. In
contrast, Nicaragua’s Reply has completely abandoned that

position – a position that Colombia’s Counter-Memorial showed

to be utterly untenable given that Nicaragua’s claimed median

line fell much more than 200 nautical miles from Nicaragua’s
coast in an area where Nicaragua has no legal entitlements.

Without any explanation for its change of position, the

Nicaraguan Reply now states that Nicaragua has “decided that

her request to the Court should be for a continental shelf
delimitation” 61– as if the scope of a case once submitted to the

Court could be unilaterally redefined by the Claimant

1.26. It is not simply that Nicaragua no longer seeks the

delimitation of a single maritime boundary from the Court that
distances Nicaragua’s Reply from its earlier submissions;

Nicaragua also asks the Court to accept the proposition that it

possesses extended continental shelf rights stretching well

beyond 200 miles from its coasts. This claim is advanced
despite the fact that Nicaragua has made no submission as

required by Article 76 of the 1982 Convention to the United

Nations Commission regarding such alleged rights and the

Commission has neither considered the matter nor issued any

61 NR, p.12, para. 26.

20recommendations relating thereto. Notwithstanding these

deficiencies, the Nicaraguan Reply now presents as the

centrepiece of its positive case a request to the Court to delimit

its extended continental shelf into areas well within 200 nm of
Colombia’s mainland coast.

1.27. But quite apart from formal considerations, including the
inadmissibility of a new outer continental shelf claim at this late

stage of the proceedings, Nicaragua’s new and exaggerated

claim suffers from insurmountable defects. Procedurally,

extended continental shelf claims fall to be submitted to and
considered by the Annex II Commission based on a full

submission. Nicaragua has not made such a submission.

Factually, the meagre information furnished by Nicaragua does
not begin to support any entitlement to outer continental shelf

rights. Legally, there are no areas of outer continental shelf in

this part of the Caribbean Sea because the areas concerned all lie

within 200 nautical miles of the ter ritory of other littoral States
bordering the region, including within 200 miles of Colombia’s

insular and mainland territory.

1.28. If Nicaragua’s original claim was artificial and

exaggerated, its new claim is even more so. The claim still falls

in areas where Nicaragua has no legal entitlement and is based

on a purported equal division alleged overlapping of physical
continental shelves that is at odds with the well established

principles and rules of international law governing maritime

delimitation.

211.29. In contrast, Colombia’s approach to delimitation has

been presented squarely within the established legal principles

of maritime delimitation as those principles have been

articulated by the Court and arbitral tribunals. Colombia has
shown that the area within which the maritime projections of the

Parties’ coasts meet and begin to overlap is situated in the area

lying between the islands comprising the San Andrés
Archipelago and Nicaragua’s coast taking into account the

actual and prospective rights of third States in the region.

Colombia has then applied the equidistance-relevant

circumstances rule to the delimitation of that area using clearly
identified basepoints on the coasts of each Party to construct the

provisional equidistance line.

1.30. At the second stage of the process, Colombia has then

taken into account the relevant circumstances characterizing the

case to assess whether those circumstances confirm the

equitableness of the provisional line or call for any adjustment.
In the light of the past conduct of the Parties and the relevance

of the 82°W meridian as the western limit of the San Andrés

Archipelago, Colombia demonstrates that an equidistance based
delimitation produces an equitable result.

1.31. Nicaragua’s claim does none of these things. Nicaragua

rejects the equidistance-relevant circumstances rule in favour of
an outer continental shelf claim which is procedurally

inadmissible, legally flawed and factually unsupported.

Nicaragua’s attempt to enclave islands which lie between 106

22(Alburquerque) and 266 (Bajo Nuevo) nautical miles from its

coast is unprecedented and unsustainable. Nicaragua ignores

the fact that Colombia has consistently exercised jurisdiction
throughout all the waters of the Archipelago. Nicaragua also

pays no attention to the presence of third States in the region or

the positions such States have taken regarding the legal
entitlements that Colombia’s islands are entitled to.

1.32. In short, the issues of maritime delimitation in this case
are not merely about resources: they raise vital issues both of

fidelity to the law and the future of people. As to the law, they

are about applying the well-established principles and rules

relating to maritime delimitation. As to the future, they are
about maintaining the traditional living space of a substantial,

long-established, Colombian community, as well as preserving

security in an essential area of the south-western Caribbean.

E. Structure of this Rejoinder

1.33. This Rejoinder consists of three Parts.

1.34. Part I deals with the remaining sovereignty issues. In

Chapter 2, Colombia demonstrates the overwhelming character
of its title and that it has exercised its sovereignty and

jurisdiction over the San Andrés Archipelago for two centuries

in contrast to the artificiality ofNicaragua’s territorial claim;
that that sovereignty was recognized by Nicaragua in the

1928/1930 Treaty. Chapter 3 then discusses Nicaragua’s

23assertion that Quitasueño is nothing but a submerged bank: this

claim is shown to be simply wrong as a matter of fact.
International law applies straightforward factual criteria in

distinguishing islands from low-tide elevations, and both from

submerged banks, and the facts in this case are further verified.

1.35. Part II deals with maritime delimitation. Chapter 4
addresses Nicaragua’s new and even more extreme continental

shelf boundary claim, discusses its (in)admissibility and outlines

the severe difficulties that claim faces. Chapter 5 identifies the

area for the delimitation as lying between Nicaragua’s

easternmost islands and cays, on the one hand, and the islands
and cays making up the San Andrés Archipelago, on the other.

On that basis, Chapter 6 deals with the first stage in a

delimitation, the drawing of a provisional equidistance line and

the factors relevant to its possible adjustment. Chapter 7 shows

the groundless nature of Nicaragua’s “enclave” theory. Finally,
Chapter 8 deals with the relevant circumstances characterizing

the case and shows that they confirm the equitable nature of

Colombia’s provisional equidistance line.

1.36. Part III (Chapter 9) deals briefly with another feature of
the Reply, Nicaragua’s unwarranted claim to be entitled to

damages for Colombia’s policing of its fisheries legislation to
62
the east of the 82°W meridian.

62 NR, pp. 235-238 (“Declaration”).

241.37. There follows the required summary of argument and

Colombia’s submissions. An expert report by Dr Robert W.

Smith, a note on Colombia’s official nautical charts,

documentary annexes and maps are attached in a separate
volume.

25 PART ONE

COLOMBIA’S SOVEREIGNTY OVER THE

CAYS Chapter 2

THE ARTIFICIAL CHARACTER OF NICARAGUA’S

TERRITORIAL CLAIM

A. Introduction

2.1. In its Reply, Nicaragua demonstrates an extraordinary

“flexibility” of argumentation with regard to its claim. In view

of the clear and internationally well-recognized Colombian
sovereignty, on the one hand, and on the other hand the

judgment of the Court of 13 December 2007 which rejected

Nicaragua’s argument concerning the invalidity of the

1928/1930 Treaty, Nicaragua has not hesitated to change the
positions it originally took in its Application and Memorial.

This holds true also with regard to the positions Nicaragua

adopted on similar matters in the case it brought against
63
Honduras. All this only serves to demonstrate the evident
artificiality of Nicaragua’s territorial claim.

2.2. In principle, Nicaragua now accepts the Colombian

position that there is no need to reopen the discussion on uti
possidetis juris since the 1928/1930 Treaty settled the question:

“In this section [which addresses what
Nicaragua’s Reply interprets to be the “Islands of
San Andrés”] the issue is not whether Nicaragua
or Colombia had the better title over the
territories in dispute at independence, since it
must be accepted in the framework of this

63 See below, para. 2.49.

29 proceeding that each had a perfect title as from
the 1928 Treaty.” 64

2.3. Unable to advance the slightest piece of evidence of even

a shadow of title or of effectivités over the cays, Nicaragua’s

Reply concentrates on attempting to demonstrate that the cays it

claims do not form part of the San Andrés Archipelago, and that
this has effects in terms of the 1928/1930 Treaty. The Applicant

asserts now an underlying presumption that if it cannot be

proven that the cays are part of the Archipelago, they are

automatically under Nicaraguan sovereignty by virtue of the

Treaty. To support this supposed presumption, Nicaragua now

advances the curious theory that its title to the cays derives from

the 1928/1930 Treaty, despite its having made the invalidity of
this Treaty the basis for its claim in 1980 and again of its

Application and Memorial before this Court.

2.4. Its alleged “title” purportedly derives from the

recognition by Colombia of Nicaraguan sovereignty over the

Mosquito Coast and from the alleged “appurtenance” of the cays
to that Coast. The arguments Nicaragua invokes to support this

claim are of a quasi-geographical character: the “proximity” of

the cays to the Nicaraguan coast, 65 and Nicaragua’s curious and

misguided “continental shelf” theory, according to which the

cays belong to it because of their location on “its”

64
NR, para. 1.64. See also, NR p. 4 para. 12. See CCM, paras. 6.19-
6532.
See NR, para. 1.51.

30 66
continental shelf.

2.5. Nicaragua has been decidedly selective in dealing with

Colombia’s arguments on sovereignty, and this Rejoinder will

only respond in detail to the points actually made. It is

necessary, however, to emphasise the significance of
Nicaragua’s silence on key points, and as to these, Colombia’s

unanswered case will be briefly summarised by way of reprise.

B. Nicaragua Ignores the Basis of Colombian

Sovereignty over the Cays

2.6. The arguments and evidence in support of Colombian

sovereignty over the cays were set out in Colombia’s Counter-

Memorial. For its part, the Court has already recognized
Colombian sovereignty over San Andrés, Providencia and Santa

Catalina. It has also confirmed the validity of the 1928/1930

Treaty according to which “all the other islands, islets and cays

that form part of the said Archipelago of San Andrés” belong to
Colombia. Nicaragua’s Reply did not rebut the Colombian case.

Indeed, it did not even address most key issues. This section

briefly recalls the overwhelming grounds supporting Colombian

sovereignty over the cays, and lists some of the issues Nicaragua
chose to leave unanswered in its Reply.

(1) T HE OVERWHELMING CASE FOR C OLOMBIAN
SOVEREIGNTY OVER THE CAYS

2.7. Since its independence, Colombia has been the only

66 See NR, para. 2.21.

31State which has exercised sovereignty over all the cays as part

of the same administrative unit, the San Andrés Archipelago.

2.8. The root of Colombian sovereignty over the San Andrés

Archipelago is the Royal Order of 1803, placing it under the
jurisdiction of the Viceroyalty of Santa Fe (New Granada),

which exercised that jurisdiction until the time of independence.

Both titles and effectivités correspond to the former colonial

administrative entity from which Colombia emerged: the

Viceroyalty of Santa Fe (New Granada). Before the entry into

force of the 1928/1930 Treaty, Colombian effectivités

corresponded to the application of the uti possidetis juris
principle. Since the entry into force of the 1928/1930 Treaty,

the validity of which has already been recognized by the Court,

Colombia continued to exercise its sovereignty over all of the
67
Archipelago’s cays. But even without referring to title, the

continuous and peaceful exercise of Colombia’s sovereignty

over all cays and the absolute lack of Nicaraguan effectivités
over them would be enough to confer sovereignty on Colombia.

2.9. In view of Nicaragua’s silence with regard to most of the

factual and legal elements, there is no need to repeat what has

been said in the Counter-Memorial. It suffices to note that all

the cays have always been treated as part of the San Andrés
Archipelago. 68

67
Territorial and Maritime Dispute (Nic aragua v. Colombia),
68eliminary Objections, Judgment of 13 December 2007, p. 28, para. 88.
See CCM, paras. 2.32-2.98.

322.10. In this regard, the Loubet Award of 11 September 1900,

in which Colombia’s sovereignty over all the islands, cays, islets

and banks of the San Andrés Archipelago was confirmed,

should be recalled:

“Quant aux îles les plus éloignées du continent et

comprises entre la côte de Mosquitos et l’Isthme
de Panama, nommément: Mangle-Chico,
Mangle-Grande, Cayos-de-Albuquerque, San
Andrès, Santa-Catalina, Providencia, Escudo-de-

Veragua, ainsi que toutes autres îles, îlots et
bancs relevant de l’ancienne Province de
Cartagena, sous la dénomination de canton de

San-Andrès, il est entendu que le territoire de ces
îles, sans en excepter aucune, appartient aux
États-Unis de Colombie.” 69

2.11. It will be recalled that in 1900 Nicaragua lodged a

protest with the French President, claiming sovereignty over the

Islas Mangles (Corn Islands) and the islands, banks, cays, and

islets located between the 11th and 15th parallels latitude North,
70
and to the west of the 84°30’ Paris meridian. This meridian is
71
equivalent to 82°09’45” Greenwich meridian, a meridian very

close to the 82°W meridian that thirty years later, Nicaragua

69 Award Relating to the Boundary Dispute between Colombia and
Costa Rica, 11 September 1900, 28 UNRIAA p. 345. Emphasis added.
Translation by Colombia: “As to the Islands farthest from the Continent and
comprised between the Mosquito Coast and the Isthmus of Panama,

particularly Mangle Chico [Little Corn ], Mangle Grande [Great Corn], the
Cays of Alburquerque, San Andrés, Santa Catalina, Providencia, Escudo de
Veragua, as well as any other Islands, Islet s and banks that formerly
depended upon the former Province of Cartagena, under the name Canton of
San Andrés, it is understood that the territ ory of these islands, without any
exception, belongs to the United States of Colombia.”
70 Nicaraguan Note of 22 September 1900. See CCM, para. 4.114;
Vol. II, Annex 32.
71 CCM, Annex 218.

33would demand to have included as the western limit of the San

Andrés Archipelago. See Figure R-2.1 . The determination

made in the Loubet Award with regard to the islands, islets and

banks of the Archipelago was confirmed by the White Award in
1914, without any objection from Nicaragua. 72 The key point is

this: the claim made by Nicaragua in response to the Loubet

Award clearly excluded all of the islands, islets and banks which

are before the Court.

2.12. Equally, Nicaragua was unable to make any comment on

the description of the Archipelago made by the Colombian

Foreign Minister Jorge Holguín in his publicly available Report

to the Colombian Congress, at the time of the forcible
73
occupation of the Islas Mangles (Corn Islands) by Nicaragua.

Nicaragua’s Reply did not respond to this public and

comprehensive description of the Archipelago made by a
Colombian official having the capacity to engage Colombia at

the international level; a description that the Nicaraguan

authorities could not have ignored at the time they claimed the

Islas Mangles (Corn Islands). 74

2.13. Colombia’s Counter-Memorial also explained in detail

the negotiation process that ended in the conclusion and

ratification of the 1928/1930 Treaty, whereby Nicaragua

72 CCM, paras. 4.134-4.139.
73 CCM, Annex 89, 1896 Report to Congress by the Colombian
Foreign Minister. The description provided by Minister Holguín was
reproduced in CCM, para. 2.59 and above, at note 35. See also CCM paras.
2.60, 2.81, 2.82, and 6.20.
74 CCM, para. 6.20.

34recognized Colombia’s full and entire sovereignty over “all the
other islands, islets and cays that form part of the said

Archipelago”. 75 For its part, Colombia recognized Nicaragua’s

sovereignty over the Mosquito Coast, comprising the area

located between Cape Gracias a Dios and the San Juan River,

and over the Mangle Grande and Mangle Chico islands (Great

Corn Island and Little Corn Island), despite the fact that both the

Coast as well as those islands had been ascribed to the

Viceroyalty of Santa Fe (New Granada) in 1803. The cays now

claimed by Nicaragua not only had been under Colombia’s

jurisdiction for over a century at that time, without any objection
from Nicaragua; they had never been claimed individually by

that country.

2.14. The 1928/1930 Treaty stated that the cays of Roncador,

Quitasueño and Serrana (hereafter the “three features”) were in

dispute between Colombia and the United States of America,

and were on that ground excluded from the Treaty by Article I,
76
paragraph 2. This exclusion had nothing to do with any claim

by Nicaragua – indeed, in its context Article I, paragraph 2 is
decisive proof that there was no such claim. 77

2.15. In 1854, after United States citizens were discovered

conducting unauthorized guano extraction activities in the

Archipelago’s cays, the Governor of the Province of Cartagena

– from which the Archipelago was a dependency – issued a

75 CCM, paras. 5.3-5.14, and Annex 1.
76 See CCM, Chapter 4, Section B.
77 CCM, Annex 1, Article I; and see CCM, Chapter 5.

36decree banning those activities. From 1871 onwards, the

Colombian Congress authorized lease to Colombian and foreign

individuals for guano extraction and fishing around the cays of

Roncador, Quitasueño and Serrana. These events gave rise to a

protracted dispute between Colombia and the United States
concerning sovereignty over the three features. 78 By the Olaya-

Kellogg Agreement of April 1928, Colombia and the United

States, the two parties in the dispute, provided that the United

States would be allowed to install and maintain aids to

navigation, while Colombian vessels and nationals could
79
continue to carry on fishing activities in their maritime areas.

2.16. The Olaya-Kellogg Agreement was notified to the

Nicaraguan Government which communicated it to the

Congress during the process of approval of the 1928/1930

Treaty. There was no reaction at all from either the Nicaraguan

Government or the Congress to this clear assertion of

Colombian sovereignty over the three features.

2.17. Following the conclusion of the 1928 Treaty, in order to

prevent the possibility that the isla nds, islets and cays located

west of the 82°W meridian could be considered as part of the

San Andrés Archipelago, Nicaragua demanded – and Colombia

accepted – that both the Nicaraguan Congressional decree
approving the 1928 Treaty, as well as the 1930 Protocol of

Exchange of Ratifications, were to include the 82°W meridian

78
CCM, paras. 3.44-3.45, 3.47-3.71, 4.5-4.4 and Annexes 25, 72, 73,
79, 76, 77, 79, 80, 81, 82, 86, 90, 96, 97, 99, 100.
CCM, paras. 4.32-4.42.

37as the limit of the Archipelago. 80

2.18. In the Judgment of 13 December 2007, the Court

indicated that the inclusion of the 82°W meridian in the 1930

Protocol “…is more consistent with the contention that the

provision in the Protocol was intended to fix the western limit of
81
the San Andrés Archipelago”. Indeed the only plausible
implication of this provision of the Protocol is that the islands,

islets and cays located east of the 82°W meridian did not belong

to Nicaragua and that Nicaragua did not claim them, and that

those located to the west of that line did not belong to Colombia

and that Colombia did not claim them. Indeed, the common

sense question to ask is the following: how can cays located east

of that line be considered Nicaraguan?

2.19. In short, for over a century and a half Nicaragua did not

make any claim to the cays of Roncador, Quitasueño, Serrana,

Serranilla, Bajo Nuevo, Alburquerque and East-Southeast Cays.

If Nicaragua had harboured any such claims, it would have

acted accordingly and asserted that claim following its

independence. Yet it did nothing. Its silence is the more

marked on those occasions when protest or at least some

reaction was specifically called for. Such occasions include, for
example, the following:

x During the dispute between Colombia and the United

80
81 CCM, paras. 5.44-5.46.
Territorial and Maritime Dispute (Nic aragua v. Colombia) ,
Preliminary Objections, Judgment of 13 December 2007, p. 34, para. 115.

38 States of America over the cays of Roncador, Quitasueño
and Serrana, which began with the guano extraction

activities by United States citizens and which was

formalized in 1891. 82

x During the diplomatic exchanges between Colombia and

Great Britain between 1874 and 1927 over fishing
activities carried out in the vicinity of Quitasueño and

other Colombian cays by British subjects from the

Cayman Islands. Nicaragua’s silence is in complete

contrast with its attitude during its negotiations with

Great Britain between 1864 and 1916, in which it

protested against fishing activities carried out by British

subjects from the Cayman Islands in the vicinity of

islands and cays considered to be Nicaraguan because

they were “adjacent to the Mosquito Coast”.

Nicaragua’s claim was circumscribed to the Miskito and
Morrison cays, located twenty-four and forty-one miles

respectively from the Mosquito Coast. Nicaragua did

not make any claims about the cays located east of the

82°W meridian. 83

x During negotiations for the Treaty between Nicaragua
and Great Britain of 19 April 1905 (Treaty Altamirano-

Harrison), 84by which the former gained control of the

Mosquito Coast;

82 CCM, paras. 4.5-4.9.
83 CCM, paras. 4.103-4.108.
84 NM, para.1.101.

39 x During the fifteen years of negotiations between

Nicaragua and Colombia following Nicaragua’s first

claim to the San Andrés Archipelago in 1913, leading to

the 1928/1930 Treaty, notwithstanding the continuous
exercise of State authority by Colombia over all the cays.

x Upon conclusion of the Olaya-Kellogg Agreement
between Colombia and the United States of America in

April 1928, which was officially communicated by

Colombia to Nicaragua soon after the signature of the

Esguerra-Bárcenas Treaty of 1928.

x Between 1928 and 1972 when the Olaya-Kellogg

Agreement between Colombia and the United States of

America concerning the cays of Roncador, Quitasueño

and Serrana was enforced.

2.20. On each of these occasions Nicaragua remained silent.

These were clear situations in which “ qui tacet consentire

videtur si loqui debuisset ac potuisset ”.85 It was only in 1972

that Nicaragua first claimed some of the features comprising the

Archipelago; only in 1980 did it purport to disavow the
1928/1930 Treaty and claim the whole Archipelago.

2.21. In sum, given …

x Colombian sovereignty over all the cays based on the uti

possidetis of 1810 (both colonial title and effectivités);

85 Case concerning the Temple of Preah Vihear (Cambodia v.
Thailand), Merits, Judgment of 15 June 1962, I.C.J. Reports 1962, p. 23.

40 x postcolonial effectivités before the conclusion of the

1928/1930 Treaty;

x the terms of the 1928/1930 Treaty, notably the effect

given to the line of the 82°W meridian;

x continued and exclusive effectivités thereafter over all

features to the east of that meridian;

x recognition of Colombian sovereignty by other relevant

States;

x acquiescence by Nicaragua itself, in the period prior to

1972 (the three features) and 1980 (the whole

Archipelago),

Nicaragua’s late claim over the cays is groundless and

opportunistic.

(2) N ICARAGUA ’S COMPLETE FAILURE TO RESPOND TO KEY

ISSUES RAISED IN C OLOMBIA ’S COUNTER -M EMORIAL

2.22. Nicaragua’s Reply fails to address most of the arguments

and evidence set out in Colombia’s Counter-Memorial
concerning sovereignty over the cays. Some examples have

already been given. Others include:

x The 1896 Report to Congress by the Colombian Foreign

Minister Jorge Holguín, in which Minister Holguín

clearly defined the San Andrés Archipelago in a detailed

description as including all the cays now claimed by

41 86
Nicaragua. Despite its public character, Nicaragua did
87
not react to this report at the time it was issued, and

Nicaragua provides no explanation for its silence in its

Reply.

x The constant and coherent official presentation of all
th 88
cays as being Colombian since the 19 century;

x Activities carried out by Colombian authorities à titre de
th
souverain since the 19 century with regard to the cays.

In particular, Nicaragua’s Reply does not rebut the

following examples of exercises of sovereignty by

Colombia over the cays: (1) legislative and

administrative control, including the regulation of
89
fishing, the regulation of other economic exploitation,
90
including guano contracts, the regulation of
91 92
immigration, port captaincies, search and rescue

operations, foreign consuls, 94 and environmental

matters; 95 (2) law enforcement; 96 (3) naval patrol and

97 98
operations; (4) seismic/oil related research; (5)

86 CCM, Annex 89. See also CCM paras. 2.60, 2.81, 2.82, and 6.20.
87
88 CCM, para. 6.20.
CCM, paras. 2.33-2.85.
89 CCM, paras. 3.29-3.42.
90 CCM, paras. 3.43-3.71.
91 CCM, paras. 3.72-3.73.
92
93 CCM, paras. 3.74-3.75.
CCM, paras. 3.76-3.86.
94 CCM, paras. 3.87-3.88.
95 CCM, paras. 3.89-3.91.
96 CCM, paras. 3.92-3.94.
97
98 CCM, paras. 3.95-3.108.
CCM, paras. 3.109-3.116.

42 99 100
mapping surveys; (6) scientific research; and (7)
101
public works;

x The recognition of Colombian sovereignty over all of the

th th
cays, since the 19 and 20 centuries until the present
102
time by neighbouring States such as Panama, Costa
103 104 105
Rica, Honduras and Jamaica, with all of which

maritime delimitation agreements have been concluded;

x The recognition of Colombian sovereignty by other

States, including the United States, 106 Great Britain, 107

Sweden and Norway; 108 as well as that of the

international community as a whole, which has not

objected the effective and long-standing exercise of

actual authority and jurisdiction over the cays and the

appurtenant maritime areas by Colombian authorities.

x Official Nicaraguan cartography before 1980, which

cannot be reconciled with its present claim since it did
109
not include any of the cays it now purports to claim,

unlike Colombia’s cartography; 110

99
100 CCM, paras. 3.117-3.125.
CCM, paras. 3.126-3.131.
101 CCM, paras. 3.132-3.151.
102 CCM, paras. 4.134-4.147.
103 CCM, paras. 4.149-4.162.
104
105 CCM, paras. 4.163-4.167.
CCM, paras. 4.168-4.188.
106 CCM, paras. 4.48-4.77.
107 CCM, paras. 4.78-4.102.
108 CCM, paras. 4.14-4.21.
109
110 CCM, paras. 2.96-2.97.
CCM, paras. 2.79-2.95.

43 x The fact that not one of the more than 5000 maps in the

main map collections of the world that Colombia has

examined depicts the cays and maritime features east of

the 82°W meridian as belonging to or claimed by
111
Nicaragua;

and

x The elementary proposition that it is not the continental

shelf that determines territorial sovereignty over the

cays.112

The only proper inference to be drawn from this long list of

silences in the Nicaraguan Reply is that it has no good answers,

and that its sovereignty claims are without foundation.

C. Nicaragua’s Continued Reliance on a Groundless
Uti Possidetis Claim

2.23. Perhaps the main argument advanced in Nicaragua’s

Reply is that since the 1928/1930 Treaty only concerned San
Andrés, Providencia, Santa Catalina and the Islas Mangles

(Corn Islands), all of the remaining territory, even if it had

belonged to Colombia in the past (the Mosquito Coast and the

“appurtenant” islands offshore) would have passed to Nicaragua
113
by virtue of the 1928/1930 Treaty. This claim is in clear

contradiction with the wording of the Treaty itself, with

previous and subsequent practice – including the Loubet Award
–, with statements made by both Nicaraguan and Colombian

officials, and with the existing factual situation both before and

111
112 CCM, paras. 2.86 and 2.88.
CCM, paras. 6.33-6.37.

44 114
after the conclusion of the 1928/1930 Treaty.

(1) N ICARAGUA ’S CONTRADICTORY ARGUMENTS

CONCERNING UTI POSSIDETIS

2.24. On uti possidetis Nicaragua’s Reply is contradictory. On

the one hand it asserts that, in light of the Judgment of 13

December 2007, the Treaty of 1928/1930 settled all issues and
115
that uti possidetis juris is not relevant. On the other hand, it

insists that “any determination as to sovereignty […] has to be

effectuated on the basis of the colonial titles to which the Parties
116
succeeded at independence”.

2.25. With respect to the colonial title, Colombia has shown
that the colonial title along with the effectivités rested with

Colombia; with respect to the 1928/1930 Treaty, it specifically

addressed the territorial dispute and put an end to it. Nicaragua

first rejected the Treaty on the basis of its purported invalidity or

termination. Those arguments having been rejected, it now

attempts to render the content of this same Treaty meaningless

through an incredible interpretation.

2.26. In the first place, Nicaragua insists upon pure proximity

as the basis for its claim. This argument has already been

rejected by the Court in relation to features considerably closer

113 NR, para. 1.20.
114 CCM, paras. 5.60-5.61.
115 NR, paras. 1.3-1.4.
116 NR, para. 1.34.

45inshore. 117

2.27. Persevering in its contradictions, Nicaragua claims that

the matter of the Royal Order of 1803 is “irrelevant” and “no

longer at issue” in the case, yet at the same time persists in
118
invoking a wrong interpretation of the Royal Order of 1803.

It is noteworthy that Nicaragua chose to criticise by way of a
footnote the Court’s analysis of the Royal Order of 1803 in

Nicaragua v. Honduras:

“With all due respect, Nicaragua considers
particularly unfortunate the introduction of the
obiter dictum of the Court related to the Royal

Order of 20/30 November 1803 in a Judgment
concerning another issue where the Royal Order
was not relevant for deciding that case and at a
moment when the Court was precisely
deliberating on the question of the Preliminary

Objections raised by Colombia in this case. In
any event, whatever the appearances of
prejudgment this reference might have on the
present case, the position of Nicaragua is that this

obiter dict119does not have the effect of res
iudicata.”

2.28. Whether the Court’s statement is res judicata or not is
beside the point. The Court’s analysis in its Judgment of 8

October 2007 was both accurate and relevant for that case, as

well as this one. But Nicaragua repeats now the very arguments

the Court rejected in Nicaragua v. Honduras concerning

117 Case concerning territorial and maritime dispute between

Nicaragua and Honduras in the Cari bbean Sea (Nicaragua v. Honduras) ,
118gment of 8 October 2007, para. 161. See also CCM, para. 6.15.
119 NR, paras. 1.47-1.49, 1.65.
NR, p. 8, footnote 13.

46proximity and the attribution of islands to one or other of the

Spanish administrative units during colonial times.

2.29. In its Judgment of 8 October 2007, the Court had to

analyse which of the provinces of Honduras and Nicaragua, both
part of the Captaincy-General of Guatemala, administered the

insular territories in dispute. To this end, it had to determine the

historical period during which this exercise would have been

relevant. It is against this background that the Court determined

that

“the evidence presented in this case would seem
to suggest that the Captaincy-General of

Guatemala probably exercised jurisdiction over
the areas north and south of Cape Gracias a Dios
until 1803 when the Vice-Royalty of Santa Fé
gained control over the part of the Mosquito

Coast running south from Cape Gracias a Dios
by virtue of the Royal Decree of that year (see
also I.C.J. Pleadings, Arbitral Award Made by
the King of Spain on 23 December 1906
(Honduras v. Nicaragua), Vol. I, pp. 19-22).” 120

2.30. Nicaragua then raises what it calls a “common sense

question”, which it dismisses immediately: “[d]ue to the limits

of the jurisdiction in this case, that question will go
121
unanswered”. The so-called “common sense question” is
why, if Colombia’s colonial title were legally justified, would

Colombia be willing to enter into a Treaty which gave it less

120
Case Concerning Territorial and Maritime Dispute between
Nicaragua and Honduras in the Cari bbean Sea (Nicaragua v. Honduras) ,
121gment of 8 October 2007, para. 161.
NR, para. 24.

47 122
than the 1803 Royal Order? The answer is very simple: to put
an amicable end to a territorial dispute by giving up a title to

territory (the Mosquito Coast) over which it could not regularly

exercise its sovereignty, as neither could Spain before it. More

generally, agreements on territorial matters or boundaries

between States almost never reflect the entire aspirations of the

parties; they are invariably compromi ses. That is the common-

sense answer.

(2) T HE SUPPOSED “UNITY ” OF THE CAYS AND THE

M OSQUITO C OAST

2.31. In its Reply, 123Nicaragua claims that:

“On the basis of the 1928 Treaty, the position of
Nicaragua is that the recognition of sovereignty
over the Mosquito Coast includes all the
appurtenant rights of that Coast to its off-shore

maritime features. These maritime features
include all those not proven to be part of the ‘San
Andrés Archipelago’ which is recognized in that
Treaty to appertain to Colombia.” 124

2.32. This interpretation is contrary to the text and the spirit of

the Treaty. A review of the travaux préparatoires suffices to

confirm that at the time of the Treaty’s conclusion and approval,

Nicaragua was well aware of the fact that the Mosquito Coast

122 NR, para. 24.
123 NR, para. 1.44: “Thus is iontrovertible that all the islands off
Caribbean coast of Nicaragua at independe nce appertained to this coast. If
the Treaty of 1928 had not divide d between Nicaragua and Colombia title
over this territory (that is, attributed the coast to Nicaragua and certain
islands to Colombia) it would simly be a question of determining the
sovereign over whole territory including all the islands.”
124 NR, para. 13.

48was a separate entity, wholly independent from the San Andrés

Archipelago. 125

2.33. If, during colonial times, the Mosquito Coast and the

Islands of San Andrés had been considered a single geographic
unit, the Spanish King would not have needed to distinguish

between them or even mention the Islands of San Andrés, these

islands being a simple “appurtenance” to the Coast. 126 Governor

O’Neylle would have been appointed not only Governor of the

islands of San Andrés – which he was – but also of the

Mosquito Coast, which he was not. Finally, Nicaragua cannot

explain why Spain – which had a governor in San Andrés –
would choose not to place the cays under his authority, but

rather, would prefer to attach the cays to a distant coast over

which it did not have any actual control, indeed, no effective

authority at all.

2.34. The history of the Mosquito Coast also contradicts the

current Nicaraguan sovereignty claim on the basis of “unity” or

“appurtenance”. Neither the British Government, nor the

Miskito King, who were in effective control of the Mosquito

Coast during much of the 19th century, ever claimed that
Quitasueño, Roncador, Serrana, Serranilla, Bajo Nuevo,

Alburquerque and East-Southeast Cays were part of their

territory. No doubt, if the United Kingdom had considered them

to be appurtenances to the Mosquito Coast, it would have

125
126 See, e.g., CCM, Annexes 42, 45 and 46.
NR, para. 1.20.

49claimed them. On the contrary, while controlling the Mosquito

Coast, the British Government recognized Colombian

sovereignty over the cays now claimed by Nicaragua,

negotiating with the Colombian Governm ent matters related to
127
fishing in the vicinity of the cays. As has also been

demonstrated, the Loubet Award of 1900 distinguished between

the Mosquito Coast on the one hand – attributing the relevant

part of the Mosquito Coast to Costa Rica – and the islands in the
Caribbean on the other hand, in relation to which the Loubet

Award recognized Colombian sovereignty. 128

2.35. Moreover, the fixing of the 82°W meridian as the limit

of the Archipelago in the 1928/1930 Treaty also shows that

Nicaragua never considered that the cays and islands it now

claims could constitute a geographical unit with the Mosquito

Coast. 129

2.36. Following the conclusion of the 1928 Treaty, in the

Official Opinion of the Nicaraguan Government on the End of

the Dispute with Colombia, on 22 September 1928, the

distinction between the Archipelago and “the Nicaraguan
130
Mosquitia” is asserted in the clearest way. Nicaragua did not

produce this important document in its Memorial and remained

silent on it in its Reply.

127 See above, para. 2.19.
128 See above, para. 2.10.
129 Cf. NR, para. 13.
130 CCM, Annex 196.

502.37. But this distinction – subsequently confirmed by both

Parties in the preamble of the 1930 Protocol – is made

consistently in Nicaraguan documents of that period:

x In the Nicaraguan Congressional Decree of 6 March

1930 approving the 1928/1930 Treaty it is said that: “the

Treaty puts an end to the question pending between both
Republics regarding the Archipelago of San Andrés and

the Nicaraguan Mosquitia.” 131

x The Nicaraguan Chamber of Deputies in its resolution of

3 April 1930 uses the following: “put[] an end to the

question pending between both Republics regarding” the
132
two; this is another document which Nicaragua does
133
not quote in its Reply.

x The full powers from the Nicaraguan President to the

Nicaraguan Foreign Minister, 9 April 1930 has: “to put

an end to the question pending between both Republics

concerning the Archipelago of San Andrés and

Providencia and the Nicaraguan Mosquitia.” 134

x The 1930 Report to Congress by the Nicaraguan Foreign

Minister concerning the 1928/1930 Treaty has: “to put an

end to the question pending between both republics

131 CPO, Annex 10.
132 CCM, para. 5.55, and CPO, Annex 10.
133
The ratification is referred to in NR, paras. 1.9, 1.25, 7.1. NM, para.
2.101 refers to the approval as occurring on 6 March 1930, but this confuses
the decision of the Senate (which did occur on 6 March 1930: NM, Annex
19) and that of the Chamber of Deputies, which as stated occurred on 3 April
1930: CPO, Annex 10.
134 CCM, Annex 200.

51 concerning the Archipelago of San Andrés and
135
Providencia and the Nicaraguan Mosquitia”.

(3) N ICARAGUA ’S ADJACENCY ARGUMENT

2.38. In pursuit of a false adjacency, the Reply invokes a
purported nominal administrative division of the Spanish

American dominions established by the 1812 Constitution.

According to Nicaragua:

“The Constitution of Spain of 1812, which is the

last law of the Spanish Empire that provided for
territorial division in America, stipulated that the
area corresponding to the Captaincy General of
Guatemala included ‘all the adjacent islands on

the Pacific and the Atlantic’ ( todas las is136
adyacentes sobre el Pacífico y el Atlántico).”

2.39. First, the purpose of the relevant article of the 1812

Constitution (Article 10) was not to provide for a “territorial

division in America”. Rather, Article 10 contained a list of all

the territories in the world considered by Spain as under its

sovereignty, despite the fact that the American colonies were at
war with Spain in pursuit of their independence. Second,

irrespective of the content of this text –which is not exactly that

attributed to it by Nicaragua – the argument is groundless since

any Spanish decision subsequent to 1810, the year of the uti

possidetis juris for South America and Mexico, would not be
opposable to Colombia. In 1812, Spanish authority was no

135 CCM, para. 5.29, and Annex 201.
136 NR, para. 1.41.

52longer recognized by the independent authorities in the New

World.

2.40. Nicaragua’s Reply goes on to quote the Treaty between

Spain and Nicaragua of 25 July 1850, in which the former
recognized the independence of the latter. 137 It asserts that when

that treaty mentions the “territories situated between the Atlantic

Ocean and the Pacific, with its adjacent islands…”, Spain

implicitly recognized Nicaragua’s sovereignty over the islands
138
“off the Caribbean coast”. But moreover, it is absurd to assert

that Spain would have been in a position in 1850 to recognize

any Nicaraguan rights over islands and cays that were under
Colombia’s sovereignty. All the more so, considering that

Colombia and Spain would only establish diplomatic relations

in 1881, thirty years later.

2.41. In this Treaty, like other treaties of recognition with

former Spanish colonies concluded around this time, Spain was
not taking a position as to territorial disputes among its former

colonies. In no way can the reference to “adjacent islands” be

read as recognition by Spain of Nicaraguan sovereignty over the

islands and cays in question. The fact is that in 1850 Nicaragua

was neither in possession of, nor claimed sovereignty over, any

of the islands and cays forming part of the San Andrés
Archipelago. The situation of Colombia was exactly the

opposite, as it exercised its sovereignty over these islands and

137
138 NR, para. 1.43.
NR, para. 1.43.

53cays, and claimed them as its own since its independence.

2.42. Notably, Nicaragua now advances an argument that it

strongly rejected in the Territorial and Maritime Dispute

between Nicaragua and Honduras in the Caribbean Sea . In
response to Honduras’ allegation that the Treaty of Peace

concluded between Honduras and Spain had recognized

Honduran sovereignty over certain disputed cays, Nicaragua’s

interpretation of the peace treaties concluded between Spain and

both countries deserves full citation:

“It is also worth mentioning that the treaty of
recognition of the independence of Honduras

signed with Her Majesty, the Queen of Spain, in
Madrid on March 15, 1866, which extends
(article 1) to ‘the adjacent islands that lie along
its coasts,’ is very similar to language used

previously in the treaty acknowledging the
independence of Nicaragua (Madrid, 25 July
1850). Neither of these instruments makes
unambiguous reference to islands.” 139

The Court agreed with that Nicaraguan statement:

“The names of the adjacent islands pertaining to
Nicaragua were not specified in the [1850]
Treaty.” 140

It is the same argument advanced by Honduras, objected to by

Nicaragua and rejected by the Court, that Nicaragua now makes

against Colombia.

139
Emphasis added. Territorial and Ma ritime Dispute between
Nicaragua and Honduras in the Cari bbean Sea (Nicaragua v. Honduras) ,
140aragua’s Reply, 13 January 2003, para. 4.43.
Nicaragua v. Honduras , Judgment of 8 October 2007, p. 15, para.
34.

542.43. Further, in its case against Honduras, Nicaragua’s Reply

entirely disregarded the argument it advances in the present case

concerning the adjacency of the islands to the continent.

Nicaragua qualified the Honduras argument as “simply, wishful
141
thinking”.

2.44. Nicaragua’s recent thesis of “adjacency” is also

contradicted by its conduct. In the official Nicaraguan

cartography Colombia submitted with its Counter-Memorial,

only the cays and islets in the immediate vicinity of the coast

were presented as Nicaraguan. That depiction of “appurtenance”

did not extend to features located east of the Islas Mangles
(Corn Islands). Moreover, on Nicaragua’s official map of 1967,

arrows pointing east, placed near the right hand margin of the

map, expressly read “Islas San Andrés (Colombia)” “Islas La
142
Providencia (Colombia).” If Nicaragua had harboured any

claim over the cays it could have been simply indicated in a

similar manner.

2.45. In March 1890, when Nicaragua forcibly took over the

Islas Mangles (Corn Islands), its claim was limited to these

islands alone. A decree issued by the Nicaraguan Government
stated that “the jurisdiction that the municipal government of the

Mosquita Reserve has been exercising in the islands of the

Atlantic Coast, across from the territory of the Reserve” was

141
Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras) , Nicaragua’s Reply, 13
142uary 2003, para. 4.19, in fine.
CCM, Vol. III, Figure 2.34.

55“contrary to the full sovereignty and domain of the Republic in

said islands” (the Corn Islands) and that “consequently, from the

time of the publication of this decree only authorities of the
143
Republic may exercise jurisdiction in said islands”. No

mention is made of any other Nicaraguan claim or of
Nicaraguan jurisdiction over other islands and cays “of the

Atlantic Coast”. Nicaragua’s claim only concerned islands and

cays close to the continent.

2.46. In Nicaragua v. Honduras , the Court rejected the

sovereignty claim based on adjacency both with regard to

Honduras’ and Nicaragua’s coasts, the disputed cays lying
between 27 and 41 miles from the mainland:

“Notwithstanding the historical and continuing
importance of the uti possidetis juris principle, so
closely associated with Latin American
decolonization, it cannot in this case be said that

the application of this principle to these small
islands, located considerably offshore and not
obviously adjacent to the mainland coast of
Nicaragua or Honduras, would settle the issue of
144
sovereignty over them.”

2.47. This is a fortiori the case with regard to the cays which

are part of the San Andrés Archipelago, located as they are at

distances between 100 and 270 miles from the Nicaraguan coast

and having been since the early 19th century under Colombian

sovereignty and jurisdiction.
143
144 NM, p. 50, para. 1.100.
Case concerning Territorial and Maritime Dispute between
Nicaragua and Honduras in the Cari bbean Sea (Nicaragua v. Honduras) ,
Judgment of 8 October 2007, para. 163.

562.48. Nicaragua’s Reply now attempts to argue that the Court

adopted such a position simply because what was at issue there

were minor features in proximity to two different colonial
145
units. According to Nicaragua, the cays here by contrast
“were known and had been surveyed by the Spanish authorities

during the colonial period”: 146 “It would seem illogical that the

Spanish colonial Empire would have treated these small features

independently of the mainland coasts to which they were

naturally attached”. 147

2.49. But the fact is that the cays, known and surveyed by the

Spanish authorities as they were, were “located considerably

offshore and not obviously adjacent to the mainland coast”.

What is essential, and what Nicaragua persists in not addressing,

is that the cays here were at all relevant times administered by

authorities established on the main island of San Andrés, and
were considered to form part of the same territorial unit: the San

Andrés Archipelago. 148 No action was taken by Spain to attach

the cays to the Mosquito Coast, which in any event it was

unable to control.

2.50. To sum up, the inevitable conclusion is that the cays are

not adjacent to the Mosquito Coast. But even if they were this

could not produce the effect of attributing sovereignty to

Nicaragua.

145 NR, para. 1.37.
146 NR, para. 1.38.
147 NR, para. 1.39.
148 NR, paras. 12-24.

572.51. Nicaragua’s thesis of “appurtenance” or “proximity” of

the cays to a coast has been addressed on a number of occasions.

A cay or an island can be attached to a principal territory, on the

basis of proximity, when there is a certain distance between the
149
two which may range from under three hundred metres, to six
150
nautical miles. For islands situated within the territorial sea,

there may be a rebuttable presumption that those islands belong

to the coastal State. However, where islands are situated further
151
away there is no such presumption. Furthermore, in the

instant case, Colombia and Nicaragua fixed a limit – an

allocation line – to define, in a precise manner, what islands and

cays appertained to each of the two countries.

149 Land, Island and Maritime Frontier Dispute (El

Salvador/Honduras: Nicaragua intervening) , I.C.J. Reports 1992 , p. 570,
150a. 356.
Eritrea/Yemen, Award of the Arbitral Tribunal in the First Stage -
Territorial Sovereignty and Scope of the Dispute, Award of 9 October 1998 ,
p. 131, para. 467 (the Mohabbakah islands), p. 133, para. 476 (the Haycock
islands).
151 See Island of Palmas (Miangas) Award (1928) 2 RIAA 829, 854-
855: “it is impossible to show the existence of a rule of positive international

law to the effect that islands situated outside territorial waters should belong
to a State from the mere fact that its territory forms terra firma (nearest
continent or island of considerab le size)…The principle of contiguity, in
regard to islands, may not be out of place when it is a question of allotting
them to one State rather than another, either by agreement between the
Parties, or by a decision not necessarily based on law; but as a rule
establishing ipso iure the presumption of sovereignty in favour of a particular
State, this principle would be in conflict with what has been said as to

territorial sovereignty…”. See also: Eritrea/Yemen, Award of the Arbitral
Tribunal in the First Stage - Territori al Sovereignty and Scope of the
Dispute, Award of 9 October 1998, para. 474.

58 D. Nicaragua’s Attempt to Distort the Scope of the
1928/1930 Treaty

2.52. Nicaragua attempts to distort the scope of the 1928/1930

Treaty in order to support its claim of sovereignty. Three basic

points should be made.

(1) T HE OBJECT AND PURPOSE OF THE 1928/1930
T REATY

2.53. After 15 years of negotiations, Colombia and Nicaragua
concluded the Esguerra-Bárcenas Treaty of 1928 and the

Protocol of Exchange of Ratifications of 1930 in order to

resolve a complex dispute that had broken out at different times

between the parties: as to the Mosquito Coast in the mid-19th

century; as to the Corn Islands, in 1890; as to the San Andrés
Archipelago in 1913, when Nicaragua first claimed it as a

whole.

2.54. The object and the purpose of the Treaty was clearly
defined in the Preamble. As the Court recalled in its Judgment

of 13 December 2007:

“[i]n the Preamble of the Treaty, Colombia and

Nicaragua express their desire to put ‘an end 152
the territorial dispute pending between them’.”

The same idea was reiterated in the preamble of the 1930

Protocol of Exchange of Ratifications, the Parties similarly

specified that the Treaty was concluded “to put an end to the

152 Territorial and Maritime Dispute (Niaragua v. Colombia),
Preliminary Objections, Judgment of 13 December 2007, p. 23, para. 65.

59question pending between both Republics concerning the San

Andrés and Providencia Archipelago and the Nicaraguan
153
Mosquitia.”

2.55. Contemporary documents tell the same story. For

instance, when the Colombian Government submitted the 1928

Treaty to Congress for its approval, the Minister of Foreign

Affairs noted that “the settlement in question comes to dispel
any motive of divergence between the two countries”; 154he also

pointed out that the Treaty confirmed Colombia’s sovereignty

over the Archipelago and thus prevented any future claim by

Nicaragua and any future controversy. 155 In addition to the

examples of similar avowals by the Nicaraguan Government and

Congress recalled in paragraphs 2.36 and 2.37 above,

Nicaragua’s understanding of the definitive character and scope

of the settlement is also evidenced in the Congressional records

of the Treaty’s approval process:

x The records of the Nicaraguan Senate’s session where
the Report of the Study Commission recommending the

Treaty’s approval was read reflect that the Treaty

153 CCM, Annex 1.
154
Anales del Senado, Sesiones Ordinarias de 1928 [Annals of the
Senate, Ordinary Sessions of 1928], Nº 114, Bogotá, 20 September 1928, p.
155.
“This arrangement forever conso lidates the Republic’s situation in
the Archipelago of San Andrés and Providencia, erasing any pretension to the
contrary, and perpetually recognizing the sovereignty and right of full
domain for our country over that important section of the Republic.” Anales
del Senado, Sesiones Ordinarias de 1928 [Annals of the Senate, Ordinary
Sessions of 1928], N° 114, Bogotá, 20 September 1928, p. 713.

60 brought “to an end, the question pending between both

States”.156

x Further discussions in the Nicaraguan Senate on the

inclusion of the clause concerning the 82°W meridian in

the Protocol of Exchange of Ratifications, refer to that

limit as being “indispensable for the question to be at
once terminated forever”; 157 “a need for the future of

both nations, as it came to establish the geographical

boundary between the archipelagos in dispute, without

which the question would not be completely defined”; 158

and state that its “purpose was to establish a boundary

between the archipelagos which had been the reason for

the dispute” 159

Also noteworthy are the terms in which the Nicaraguan Foreign

Minister wrote to the Colombian Minister in Managua, on his

departure at the end of his tour of duty, on 7 May 1930:

“My Government is deeply satisfied, Mr.

Minister, with the peaceful and equitable solution
of our old territorial dispute with Colombia –
largely due to Your Excellency’s discreet and
160
able actions...”

2.56. The current Nicaraguan thesis is in plain contradiction

with this object and purpose. It implies that the 1928/1930

Treaty did not put an end to the territorial dispute existing

156
157 CCM, Annex 198.
158 CCM, Annex 199.
CCM, Annex 199.
159 CCM, Annex 199.
160 CCM, Annex 50.

61between the parties with regard to Alburquerque, East-Southeast
Cays, Roncador, Quitasueño, Serrana, Serranilla and Bajo

Nuevo. In other words, it is supposed that the parties – because

of a silent, purported claim kept secret by Nicaragua – decided

to keep alive a dispute over most of the features composing the

Archipelago. The maintenance of the Nicaraguan claim over
these features flies in the face the very object and purpose of the

Treaty.

(2) T HE “S AN A NDRÉS A RCHIPELAGO ”IN A RTICLE I

COVERS ALL THE CAYS

2.57. All the islands, islets and cays that Nicaragua now

claims before the Court are part of the San Andrés Archipelago

over which Colombia has exercised effective, peaceful and
uninterrupted sovereignty for two centuries. This is shown by

the historical evidence submitted by Colombia with its Counter-

Memorial, on which Nicaragua’s Reply is silent. This evidence

includes, among others, reports by high Colombian officials,
contracts for guano exploitation in the 19hcentury, official

reports and correspondence from governmental agencies and

officials of third countries.

2.58. Among the evidence submitted by Colombia and ignored

by Nicaragua in its Reply are exchanges such as the following:

x correspondence between the Governor of Jamaica and
the British Colonial Office in 1874, where Alburquerque,

62 Roncador, Serrana and Serranilla, among others, are

listed as part of the Archipelago; 161

x the records of the Colonial Office concerning the report

of Captain Erskine of the HMS Eclipse that mentions the

cays of Alburquerque, Roncador, Serrana and Serranilla
162
as part of the Colombian Archipelago;

x the correspondence between the Department of State of

the United States and Edward Alexander, a New York

lawyer, concerning guano deposits on the cays of

Roncador, Quitasueño, Serranilla and South West Cay,

in the Archipelago of San Andrés; 163

x the Reports to Congress by the Colombian Foreign
164
Ministers, Marco Fidel Suárez (1892 and 1894), on

guano exploitation in Roncador and Quitasueño,and

Jorge Holguín (1896), including as part of the

Archipelago the following: San Andrés, Alburquerque,

Courtown Bank, Providencia, Santa Catalina, Roncador,
165
Quitasueño, Serrana, Serranilla and Bajo Nuevo;

x the 1890 Note from the Prefect of the Province of

Providencia to the Secretary of Government at

Cartagena, enclosing affidavits from fishermen and

sailors attesting to the fact that the Cays of Roncador,

161 CCM, Annex 173.
162 Report submitted by Captai n Erskine to the Commodore, 26

163ember 1874, enclosure to CCM Annex 173.
164 CCM, Annex 189.
165 CCM, Annexes 85 and 87.
CCM, Annex 89.

63 Quitasueño and Serrana are part of the San Andrés
Archipelago; 166

x the communication addressed in 1927 by the Colombian

Minister in Managua, Manuel Esguerra to the Colombian

Minister in Washington, providing an account of the

negotiations that led to the conclusion of the 1928/1930
Treaty, and including the cays of Alburquerque,

Courtown, Roncador, Quitasueño, Serrana, Serranilla

and Bajo Nuevo as part of the San Andrés

Archipelago; 167

x the Colombian notification to the Government of

Nicaragua and, through the Government, to the
Congress, concerning the Olaya-Kellogg Agreement

concluded with the United States, at the time the

approval of the 1928 Treaty was being considered by the

Congress, asserting that the cays were part of the
168
Archipelago.

2.59. It is unnecessary to enumerate once again the vast

cartographic evidence, or the publications (sampled in the

Counter-Memorial, Appendix 2) on Colombian geography,
economy and history. This consistently reflected the established

notion that the San Andrés Archipelago was a group consisting

of the islands of San Andrés, Providencia and Santa Catalina as

well as numerous cays, including Roncador, Quitasueño,

166 Enclosure to CCM Annex 82.
167 CCM, Annex 112.
168 CCM, Annex 49.

64Serrana, Serranilla, Bajo Nuevo, Alburquerque and East-

Southeast.

2.60. Nicaragua’s Reply insists that the different cays are

detached and at quite a distance from one another, making it

impossible to consider them as forming part of the

Archipelago. 169 This not only fails to rebut the analysis made

by Colombia’s Counter-Memorial on this point, it does not

address the arguments in the Counter-Memorial at all.

Colombia respectfully refers the Court to the relevant

paragraphs of its Counter-Memorial. 170

2.61. Nicaragua distinguishes three groups of cays, arguing

that they are physically separate from one other and do not form

a uniform whole. 171 But it is quite normal that archipelagos

comprise different groups of islands. 172 With respect to the

“first group” of islands identified by Nicaragua (Alburquerque

and East-Southeast Cays), Nicaragua accepts “a certain

proximity and possible connection with the group of ‘islands of

San Andrés’”. 173 Nicaragua now contends for the first time, and

unashamedly for the purpose of claiming them, that this first

169
170 NR, paras. 1.74-1.75, 4.24.
CCM, paras. 6.13-6.16.
171 NR, para. 1.73.
172 For example, Chagos is an archipelago in the Indian Ocean
comprising sixty-five different islands which make up the island groups of
the Salomon Islands, Perros Banhos, Nelsons Island, Three Brothers, Danger
Island, the Egmont Islands and Die go Garcia; the Andaman archipelago in
the Bay of Bengal comprises two groups of islands: the Andaman Island

group and Nicobar Island group; an d the Philippines is an archipelago
comprising three major island groups of Luzon, Visayas and Mindanao and
173or sub-groups.
NR, para. 1.74.

65group of cays comprised in the past the Islas Mangles (Corn

Islands)!174 It suffices to note that (1) in the 1928/1930 Treaty,

Colombia recognized the sovereignty of Nicaragua over these

islands specifically by name and not as part of a larger group;

and (2) at no time from colonial times to the present day did

Spain or its successors ever treat Alburquerque and East-

Southeast Cays as a group with Mangle Grande and Mangle
Chico islands.

2.62. Nicaragua refers then to what it calls the “second group”

of cays: “Roncador and Serrana”. 175 Again, there is no attempt

in Nicaragua’s Reply to furnish any concrete evidence of a

purported Nicaraguan title. Nicaragua is obliged to recognize

that Colombia protested the inclusion of the cays of Roncador,

Quitasueño and Serrana in a list drawn up by the United States
Department of the Treasury, whereas Nicaragua did not. It

justifies this lack of protest on the ground that the Mosquito

Coast was “still in dispute and de facto controlled by Great

Britain”.176 But foreign control does not prevent a State from

lodging a protest. It was in Washington DC where Colombian

and Nicaraguan diplomats took cognizance of that list, and

could protest it if they chose. The absence of Nicaraguan

protest simply shows that it did not consider itself as claiming
Quitasueño, Serrana and Roncador at that time.

2.63. The “third group” of cays identified by Nicaragua

174
175 NR, para. 1.75.
176 NR, para. 1.76.
Ibid.

66comprises Bajo Nuevo and Serranilla. Again, no attempt is

made to advance any actual basis of sovereignty over these cays,

located as they are at distances of over 200 nautical miles off the

Nicaraguan coast, closer as they are both to Jamaica and to other
Colombian territory. In fact, Nicaragua had never claimed these

cays before bringing its case to the Court – in the case of Bajo

Nuevo, before filing its Memorial. It neither objected the

Colombia-Jamaica Fishing Agreements in the 1980s nor the
177
Maritime Delimitation Treaty of 1993.

2.64. A new argument advanced in the Reply is that the

maritime features in dispute – with the exception of Quitasueño,

Roncador and Serrana – are not expressly mentioned by name in

the 1928/1930 Treaty. According to Nicaragua “[i]f they were

thought to be part of the ‘San Andrés Archipelago’ they would
naturally have been mentioned”. 178 This contention is

noteworthy for two reasons: (1) it implies – contrary to what

Nicaragua contends elsewhere – that Quitasueño, Roncador and

Serrana form part of the Archipelago; and (2) it ignores the

reason why these three cays were explicitly mentioned in the
second paragraph of Article I, namely, to exclude them from the

scope of the 1928/1930 Treaty since they were the object of a

dispute between Colombia and a third State. There was simply

no need to mention by name each of the other components of the

Archipelago, particularly when the 1928/1930 Treaty

177 CCM, paras.4.182-4.188.
178 NR, para. 16.

67established the western limit of the Archipelago at the 82°W

meridian.

(3) N ICARAGUA ’S ERRONEOUS INTERPRETATION OF

A RTICLE I,PARA . 2 OF THE T REATY

2.65. In the 1928/1930 Treaty, the second paragraph of Article

I deals with the special situation of three of the Archipelago’s

cays, Roncador, Quitasueño and Serrana: they “are not
considered to be included in this Treaty” on the basis that

sovereignty over them is in dispute between Colombia and the

United States”.

2.66. Nicaragua’s Reply, again, makes no attempt to furnish

any concrete evidence of a Nicaraguan title to Roncador,
Quitasueño and Serrana. 179 In Nicaragua’s view, the second

paragraph of Article I means that these three cays do not form
180
part of the Archipelago of San Andrés. But on the contrary,

the provision is only explicable on the basis that they are part of

the Archipelago: only on that basis was it necessary to put them
beyond the reach of the “recognition of sovereignty” provision

of Article I to which they would otherwise have been subject.

2.67. Article I also necessarily implies that Nicaragua itself

did not have any claim to sovereignty over the three cays.

Nicaragua accepted that sovereignty over them “is in dispute
between Colombia and the United States” – no mention of any

179 NR, para. 1.76.
180 NR, paras. 1.88-1.97.

68dispute involving any Nicaraguan claim or right. If Nicaragua

had had any claim to the three cays, it would surely at least have

mentioned it. There was no such mention – because there was

no such claim.

2.68. The text of the Colombian notification to the Nicaraguan

Government, and through it to the Nicaraguan Congress, of the
Olaya-Kellogg Agreement with the United States, prior to the

latter’s approval of the 1928 Treaty, states:

“…the Cays of Roncador, Quitasueño and
Serrana having been excluded from the Treaty of
24 March due to their being in dispute between

Colombia and the United States, the Government
of the latter, recognizing Colombia as owner and
sovereign of the Archipelago, of which those
cays are part, concluded with the Government of
Colombia, last April, an agreement…” 181

(Emphasis added)

Thus at the crucial time Nicaragua was expressly reminded that

Roncador, Quitasueño and Serrana formed part of the San

Andrés Archipelago. The Nicaraguan Congress and Government

not only did not object: the Colombian notification was
182
published in its Official Journal. Nicaragua never protested

the Olaya-Kellogg Agreement.

2.69. The fact that for over forty years Nicaragua did not voice

any reservations with regard to Colombia’s exercise of

181 CCM, Vol. II, Annex 49.
182
Transcribed in the Record of session XXIV of the Chamber of the
Senate of the Nicaraguan Congress, 21 January 1930.La Gaceta, Diario
Oficial, Año XXXIV, Managua, D.N., Nº 35, 11 February 1930, p. 273:
CCM, Annex 49.

69sovereignty and jurisdiction, not only over the cays of
Alburquerque, East-Southeast, Serranilla and Bajo Nuevo, but

also over Quitasueño, Serrana and Roncador – the latter

expressly mentioned in the 1928 Treaty – underscores the

artificiality of Nicaragua’s claim advanced in these proceedings.

(4) T HE LIMITED SCOPE OF THE “M OSQUITO COAST ”IN
A RTICLE IOF THE T REATY

2.70. Nicaragua’s Reply contends that every feature that does
not form part of the San Andrés Archipelago is Nicaraguan,

because these features are “appurtenances” to the Mosquito

Coast.183This is a pure petitio principii. If Nicaragua claims

sovereignty over these features, it must submit concrete

evidence in support of this claim. Not a single piece of evidence
has been furnished. Neither Article I of the 1928/1930 Treaty

nor the alleged “proximity” of the features to the Mosquito

Coast provides any legal basis for such a claim.

2.71. Leaving aside for a moment the fact that all the cays do

form part of the San Andrés Archipelago, the following

paragraphs will demonstrate that the two propositions on which

this Nicaraguan argument is premised have no basis.

(a) Nicaragua’s contention that everything not belonging
to the San Andrés Archipelago is appurtenant to the
Mosquito Coast

2.72. Article I of the 1928/1930 Treaty only recognizes

Nicaraguan sovereignty over “the Mosquito Coast between

183 NR, para. 1.20.

70Cape Gracias a Dios and the San Juan River, and over the
Mangle Grande and Mangle Chico Islands in the Atlantic Ocean

(Great Corn Island and Little Corn Island)”. Colombia’s

recognition of Nicaraguan sovereignty, with regard to islands,

was specifically “over the Mangle Grande and Mangle Chico

islands, in the Atlantic Ocean (Great Corn Island and Little Corn
Island)”. It said nothing about islands, islets and cays that were

“appurtenances” to the Mosquito Coast or to the Islas Mangles

(Corn Islands). This is in clear contrast with the wording

employed in the same Article I of the 1928 Treaty when
Nicaragua recognizes Colombian sovereignty “over the islands

of San Andrés, Providencia and Santa Catalina and all the other

islands, islets and cays that form part of the said Archipelago ”.

What Nicaragua proposes is that the terms of Article I stated in a
restrictive way be interpreted broad ly, while at the same time,

other terms contained in the same Article which are worded

broadly should be interpreted narrowly.

2.73. The only explanation given in Nicaragua’s Reply to
justify such an extraordinary interpretation of this treaty

provision is that “all features that are not proven to be part of the

‘San Andrés Archipelago’ of necessity are appurtenances of the
184
Mosquito Coast”. It may well be a matter “of necessity” for
Nicaragua to invoke such a last-ditch argument, but this does

not constitute a legal argument, nor is it evidence to be taken

into account for the purpose of these proceedings. It is for

Nicaragua to prove what this purported “necessity” would be

184 NR, para. 1.20.

71and what would be its scope.

2.74. Colombia showed in its Counter-Memorial that the

proximity/appurtenance argument has neither factual nor legal

basis. As a matter of fact, none of the islands of the
Archipelago can be considered as being in any way appurtenant

to the Mosquito Coast, situated as they are between 100 and 270

nautical miles away. As a matter of law, there is no such

presumption, certainly as to islands lying beyond the mainland
185
territorial sea.

2.75. A Chamber of the Court has had occasion to refer to a
notion similar to that of “appurtenance” when dealing with the

determination of sovereignty over islands, namely the notion of

“dependence”. The Chamber applied this notion to a small

island, considered to be a “dependence” of a larger island

(Meanguera with regard to Meanguerita):

“The small size of Meanguerita, its contiguity to
the larger island, and the fact that it is

uninhabited, allow its characterization as a
‘dependency’ of Meanguera, in the sense that the
Minquiers group was claimed to be a
‘dependency of the Channel Islands’ ( I.C.J.
Reports 1953, p. 71).” 186

2.76. The Minquiers case serves to further undermine

Nicaragua’s “appurtenance” theory. This group of minor

185
186 See CCM, paras. 6.13-6.15.
Land, Island and Maritime Frontier Dispute (El Salvador/Honduras:
Nicaragua intervening), I.C.J. Reports 1992, p. 570, para. 356.

72features, even closer to the French island of Chausey than to

British territory, was considered a dependency of the Channel

Islands group, even though it was located not in the immediate

vicinity of the major islands of this group, on the basis of British
activities exercised à titre de souverain . 187 Indeed, the Court’s

Judgment in the Minquiers and Ecrehos case shows that

effectivités would prevail over the simple argument of contiguity

or adjacency. Clearly, the notion of “appurtenance” does not

assist Nicaragua.

(b) Nicaragua’s claim based on the cays’ location on
“its” continental shelf

2.77. Nicaragua maintains its claim concerning the cays on the
188
ground that they are located on “its” continental shelf. Given

the absence of any articulated argument in favour of this

position, its defects can be dealt with briskly.

2.78. The first defect is temporal. The continental shelf as a

juridical construction did not exist prior to 1945. It therefore

cannot sustain any alleged interpretation of the Spanish

administrative divisions during colonial times; nor is it relevant

to the appreciation of the factua l situation at the time of the
conclusion of the 1928/1930 Treaty. Moreover, given that there

were no terra nullius territories in America at the time of the

independence of the former Spanish colonies between 1810 and

187 The Minquiers and Ecrehos ca se (France/United Kingdom),I.C.J.
Reports 1953, p. 71.
188 NR, paras. 4.19, 6.9.

731821 – as Nicaragua has repeatedly acknowledged 189 – it cannot

be held that the alleged title over the cays and banks would be

based on a legal notion that would only take shape in

international law 150 years later.

2.79. Not only is the assertion that the islands and cays are

located on the “Nicaraguan continental shelf” anachronistic, it is

also legally untenable. The principle that “the land dominates

the sea” determines the relationship between land territory and

maritime spaces in international law. This principle was

recalled by the Court in Nicaragua v. Honduras as follows:

“On a number of occasions, the Court has
emphasized that ‘the land dominates the sea’

(North Sea Continental Shelf (Federal Republic
of Germany/Denmark; Federal Republic of
Germany/Netherlands), Judgment, I.C.J. Reports
1969, p. 51, para. 96; Aegean Sea Continental
Shelf (Greece v. Turkey), Judgment, I.C.J.

Reports 1978, p. 36, para. 86; Maritime
Delimitation and Territorial Questions between
Qatar and Bahrain (Qatar v. Bahrain), Merits,
Judgment, I.C.J. Reports 2001, p. 97, para.
190
185).”

To say that land territory, including islands, belongs to a State

which claims adjacent maritime zones is to ignore basic

principle and to turn the law upside down.

189
190 NM, paras. 2.146, 2.178.
Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
p. 34, para. 113.

74 (c) The view that the 82°W meridian “maintained”
Nicaragua’s alleged sovereignty over cays to the east is
groundless

2.80. The recognition of Nicaraguan sovereignty in the 1928
Treaty did not extend to other islands and cays besides the Islas

Mangles (Corn Islands). In order to prevent the possibility that

other islands, islets and banks located west of the San Andrés

Archipelago might be claimed by Colombia, Nicaragua
demanded – and Colombia accepted – that both the Nicaraguan

Congressional decree approving the Treaty, as well as the

Protocol of Exchange of Ratifications, specify the 82°W

meridian as the western limit to the Archipelago.

2.81. It is not credible to assert that the intention of the parties

was thereby to fix an effective limit only for Colombia to the
191
west but not for Nicaragua to the east. Equally untenable is

the proposition that Nicaragua was free, at any time, to decide to
claim islands, islets and cays located to the east of that meridian

– features it had never claimed and over which Colombia had

uninterruptedly exercised its sovereignty and jurisdiction.

Neither the Colombian nor the Nicaraguan governments ever
considered that that was a possibility.

2.82. The debates in Nicaragua’s Congress show that the

82°W meridian was considered as a limit, and that the

Nicaraguan Government believed that such a limit was
indispensable to bring a definitive end to the dispute between

191 NR, para. 1.26.

75 192
the two States.

2.83. If indeed Nicaragua considered that it had sovereignty

over islands, islets and cays located to the east of the 82°W

meridian ( quod non ), such claims would surely have been

included (or at least preserved) in the 1928 Treaty. It is

similarly incomprehensible that no such mention of a claim of

sovereignty over the cays by Nicaragua was included in the

Protocol of Exchange of Ratifications in 1930, nor was such a

claim the subject of a treaty reservation, or any official

declaration issued by the Nicaraguan Government or the
Nicaraguan Congress.

2.84. This strange theory is even in contradiction with the

argument that the 82° W meridian is an “allocation line”, which
193
Nicaragua has also held before the Court, and as high
194
Nicaraguan officials have also long stated, according to

which, it had the effect of determining which islands, cays and

islets belonged to Colombia and to Nicaragua, respectively. In

fact, it is perfectly normal fo r delimitation treaties to provide
limits like the 82°W meridian contained in the 1928/1930 Treaty

in order to determine issues of sovereignty. As has been noted:

“It is not uncommon for treaties dealing with
cession or allocations of sovereignty over islands
or other territory to define the areas ceded or

192 CCM, Annexes 198 and 199; CPO, Annex 9, pp. 65-66.
193 NM, paras. 2.225-2.231, 2.237, 2.244; NWS, p. 3, paras. 5, 7, and
paras. 1.58, 1.60, 1.86; CR 2007/17, p. 17, para. 43; p. 19, para. 49; p. 58,
para. 11.
194 See e.g., NM, Annexes 31, 34, 35.

76 allocated between those states on the basis of
lines drawn at sea. The essential purpose of
those lines is to provide a convenient reference

for determining which islands and territo195s are
ceded as allocated to particular party.”

Obviously, if the 82°W meridian had indeed been an “allocation

line” as Nicaragua has asserted, its contention to the effect that

there were Nicaraguan islands and cays not only to the west, but

also to the east of that line, would totally nullify that argument.

2.85. The explanation of the scope of the 82° meridian was

clearly stated by the Nicaraguan Minister when he informed the

Senate about the Protocol negotiated with his Colombian

colleague. He referred to the line – indicating the Nicaraguan

position – as “the boundary in this dispute with Colombia”. Its

purpose was “to establish a boundary between the archipelagos
196
which had been the reason for the dispute”.

E. Nicaragua’s Conduct Compared with that of
Colombia

2.86. In support of its claim that all the maritime features not

proven to be part of the San Andrés Archipelago would
appertain to it by virtue of the recognition of sovereignty over

the Mosquito Coast in the 1928 Treaty, Nicaragua quotes

Colombia’s Counter-Memorial as follows:

195 B.H. Oxman, “Political, Strategi c, and Historical Considerations”,
in: J. Charney and L. Alexander, edsInternational Maritime Boundaries ,
Vol. I, ASIL/Martinus Nijhoff Publishe rs, Dordrecht/Boston/London, 1993,
p. 32. Also quoted in NM, para. 2.231.
196 See CCM, para. 5.54 and Annex 199.

77 “[T]he Court acknowledged that the whole
Archipelago belongs to Colombia. All that
Colombia needs to show at the merits stage is
197
that those cays do belong to the Archipelago.”

2.87. Despite the fact that the burden of proof is incumbent on

the Applicant, Colombia has amply proven the composition of

the San Andrés Archipelago. 198 In any case, the Nicaraguan

quotation is characteristically incomplete. The next sentence

reads:

“Additionally, Colombia will prove that these

cays have been administered by Colombia to the
exclusion of third States, in particular Nicaragua.
Either of these facts would be enough to sustain

Colombia’s sove199gnty: in fact both are true, as
will be seen.”

2.88. In its Counter-Memorial, Colombia provided an

extensive account of hundreds of effectivités carried out à titre
de souverain before and after the conclusion of the 1928/1930

Treaty, in a peaceful and uninterrupted manner over each and

every one of the cays that Nicaragua now claims. 200 Nicaragua

cannot show a single similar act in nearly 200 years of

republican existence. This is readily explained on the basis that

Nicaragua never considered, either before or after 1928, that it

had any rights over any of the cays.

197 NR, para. 13.
198 CCM, Chapter 2.
199 CCM, para. 1.9.
200 CCM, Chapter 3.

782.89. For instance, Colombian legislation has regulated the
territorial organization and administration of the San Andrés

Archipelago as Colombia’s own political and territorial structure

evolved; the Colombian Government has consistently regulated

fishing activities in the maritime areas appertaining to the San

Andrés Archipelago; Colombia has enforced its criminal and
civil legislation over the entire Archipelago; the Colombian

authorities have carried out surveillance and control activities

over the entire Archipelago; Colombia has conducted seismic

studies, surveys and extensive mapping and charting of the
Archipelago; the Colombian Navy has carried out search and

rescue operations and the Port Captaincy of San Andrés has

conducted investigations on the naval incidents occurred on the

cays and their appurtenant areas; Colombia has sought to
increase scientific knowledge of the San Andrés Archipelago

with a view to preserving and making sound use of its natural

wealth and improving the environment; the Autonomous

Corporation for the Sustainable Development of the

Archipelago (Coralina) was created in 1993 with a jurisdiction
comprising the entire territory of the Archipelago Department

and its appurtenant maritime areas; public works have been built

and maintained by the Colombian Government on the

Archipelago’s cays (including, among others, lighthouses,
quarters and facilities for Navy detachments, solar panels, water

collection wells, facilities for the use of the Navy infantry corps

and fishermen who visit the cays, and the installation of weather
201
and radio stations or antennae). The Navy infantry

201 CCM, Chapter 3.

79detachments deployed in most of the cays conduct missions

relating to fishing control, the preservation of the environment,

and the fight against drug trafficking and other illegal activities.

F. Conclusion

2.90. This Chapter has demonstrated the triviality of the
Nicaraguan territorial claim. After failing in its attempt to

reopen the discussion about Colombian sovereignty over the

San Andrés Archipelago as such, Nicaragua continues to pursue
its territorial claim by asserting that the cays do not form part of

the Archipelago. This is in clear contradiction with Nicaragua’s

previous conduct and with all of the evidence at the disposal of
the Court.

2.91. In particular:

(1) There is overwhelming proof of Colombian sovereignty

over all the cays, based on uti possidetis juris and
effectivités before the entry into force of the 1928/1930

Treaty, and on this conventional title and effectivités after

its entry into force. In contrast, Nicaragua is not able to
show any shadow either of title or effectivités.

(2) The 1928/1930 Treaty settled the entire territorial dispute
between Colombia and Nicaragua once and for all. This

includes all the cays that Nicaragua now claims.

(3) Nicaragua’s insistence upon the same arguments the

Court rejected in its 13 December 2007 Judgment, or

80 which were rendered unnecessary by it, such as

Nicaragua’s flawed interpretation and application of the

uti possidetis juris rule, are groundless;

(4) Nicaragua’s theory of the “appurtenance” of the cays to

the Mosquito Coast is untenable, both during and after
colonial times;

(5) The cays have been considered to constitute part of the
Archipelago and have been administered peacefully and

uninterruptedly by Colombia since independence;

(6) Nicaragua had never claimed the Archipelago’s cays

individually (it only claimed the Archipelago as a whole,

for the first time, in 1913) either before or after the
1928/1930 Treaty. It would be 40 years later that it

would first attempt to claim Roncador, Quitasueño and

Serrana; 71 years later that it would first attempt to claim

Serranilla; and some years later still that it would first
attempt to claim Alburquerque, East-Southeast and

finally Bajo Nuevo (in the Memorial).

(7) By reason of the 1928/1930 Treaty, where it expressly

acknowledged that sovereignty over the cays of

Roncador, Quitasueño and Serrana was in dispute
between Colombia and the United States of America,

Nicaragua precluded itself from making any claim over

them;

(8) During the Treaty’s approval process in the Nicaraguan

Congress, the Nicaraguan Government and Congress

81 were fully aware of the composition of the Archipelago,

including the cays of Roncador, Quitasueño and Serrana.

(9) The 82°W meridian line precludes Nicaragua from

making any claim of sovereignty to any feature to the

east of this line.

(10) In any event, the continuous and peaceful exercise of

State authority confers title on Colombia, confirmed by
the general recognition by third States and by

Nicaragua’s conduct itself.

82 Chapter 3

QUITASUEÑO

A. Introduction

3.1. The geographical location and history of Quitasueño as a

maritime feature was very fully set out in the Counter -
Memorial. 202 As was shown there, Quitasueño has been treated

throughout as the first and one of the most valuable of the

Archipelago’s features from a resource point of view. Moreover

the resource – the Quitasueño fishery – has been regulated and
th
managed by Colombia since the mid-19 century with the
express recognition or at least acquiescence of other States.

Quitasueño was identified in many early maps and charts—more

often than other elements of the Archipelago and appears in the

geographical descriptions and voyage chronicles of the
Caribbean area, even dating back to the colonial times before

the independence of both Colombia and Nicaragua. It has not

been treated as simply part of the high seas, but the fishery was,

and is, regulated by Colombia erga omnes. As such, it was a

recognized part of the Archipelago, recognized also by
Nicaragua in the 1928/1930 Treaty. (Quitasueño of course is

located wholly to the east of the 82°W meridian, recognized in

1930 as the western limit of the Archipelago.) This history

202 See CCM, paras. 2.25-2.29, 4.5-4.108.

83Nicaragua can hardly deny; but it seeks to negate it by treating

Quitasueño as a wholly submerged bank.

B. The Issues as Presented in the Pleadings

3.2. Despite the fact that Nicaragua had never considered that

Quitasueño was not capable of appropriation in sovereignty,

there is now a major difference between the Parties as to the

status of Quitasueño: according to Colombia it has the status of

a group of islands and other features as defined in the law of the
sea; for Nicaragua, on the other hand, it is a submerged bank; it

can have no maritime zones of its own, and is incapable of

appropriation. 203

3.3. In its Application, Nicaragua was more equivocal.

Sovereignty over “the Roncador, Serrana, Serranilla and

Quitasueño keys” was claimed subject to the proviso “(in so far

as they are capable of appropriation).” 204 This proviso was not

specific to Quitasueño. It may be noted that in 1972 when the

Nicaraguan Congress by a Formal Declaration claimed

sovereignty over the three features, Quitasueño, Roncador and
205
Serrana (but not Serranilla), it listed Quitasueño first and
206
likewise made no distinction as between the three features.

203
See NR, paras. 4.25-4.43.
204 Nicaraguan Application, para. 2.
205 Formal Declaration of 4 October 1972, NM, Vol. II, Annex 81.
206 The Formal Declaration is cited by the Court in its Preliminary
Objections, Judgment of 13 December 2007, para. 27.

84All were apparently capable of being claimed in sovereignty by

Nicaragua (as they had been by the United States). 207

3.4. In its Memorial, Nicaragua tried to avoid the

implications of the Formal Declaration, which was annexed but

not cited in the text. Although it asserted that “there are no

islands on this bank”, 208Nicaragua glossed over the fact that in

its own diplomatic practice it has treated all three features as

subject to its sovereignty and declined to draw any legal

distinction between them. 209 Moreover, in its Submissions it

was not nearly as categorical and chose to leave the door open to

its claim of sovereignty over Quitasueño:

“If the Court were to find that there are features
on the bank of Quitasueño that qualify as islands
under international law, the Court is requested to

find that sovereignty over such features rests with
Nicaragua.” 210

3.5. In its Counter-Memorial, Colombia addressed the status

of Quitasueño in detail, emphasising its constant, and vis-à-vis

Nicaragua exclusive, exercise of jurisdiction over Quitasueño
211
and its surrounding waters, and the non-exercise by
212
Nicaragua of any such authority. It also showed that

207 Unlike the Executive branch, whi ch by now did make a distinction:
see NM Annexes 34 and 35 (Nicaragua’s protests to US and Colombia of 7
Oct. 1972).
208 NM, para. 3.114; cf. NM, para. 2.187, 3.123.
209 See e.g., Nicaraguan Memorandum of 23 June 1971 (NM, Vol. II,

210ex 31).
211 NM, Submissions, (3), p. 265.
212 See Section D below.
CCM, para. 3.115.

85Quitasueño was always referred to as part of the Archipelago.

Notable examples were the Foreign Minister’s Reports to
213
Congress in 1892 and 1894, when reporting on the

Government’s actions in light of the guano exploitation

activities carried out by United States citizens:

“Certain merchants from the United States have

arrived at the cays of Roncador and Quitasueño,
in the Colombian Archipelago of Providencia,
and extracted, without the Government’s
permission, large quantities of the guano that lies

on those islets and that is one of the assets of the
Republic. Our Legation at Washington has
denounced these facts that violate the territory

and defraud the Nation from a source of riches
the exploit of which must be attended to as soon
as possible. That the islets are of Colombia’s
domain cannot be doubted, since they are part of
214
the Archipelago of Providencia…”

And the Report of Foreign Minister Holguin in 1896, 215who

referred to

“the islands of the Archipelago of San Andrés,
formed by three groups of islands … the first of
these groups being formed by the islands of

Providencia and Santa Catalina and the cays of
Roncador, Quitasueño, Serrana, Serranilla and
Bajo Nuevo...” 216

The same position was taken in other official statements, earlier
217
and later. In light of statements such as these, there cannot be

213
214 CCM, para, 2.55, Annexes 85 and 87.
CCM, para. 2.55, Annex 85.
215 CCM, Vol. II, Annex 89.
216 CCM, Vol. II, Annex 89.
217 See e.g., CCM, paras. 4.10 (1892),4.12 (1893), 4.17 -4.18 (1895),
4.21 (1914), 4.25 (1919).

86any doubt that it was considered part of the Archipelago prior to

the Treaty of 1928/1930. As to effectivités over Quitasueño,

likewise there can be no doubt: the record contains no indication

of any Nicaraguan act, whereas Colombia has long exercised
sovereignty and jurisdiction over it, in particular through the

regulation of fisheries and the administration and running of the

two lighthouses, without Nicaragua ever objecting or protesting

these activities. This long-standing position is discussed further

in Section D below.

3.6. The Counter-Memorial also recounted how the United

States claimed sovereignty over Roncador, Quitasueño and

Serrana, and how it was agreed that these features would be

excluded from the scope of the Treaty, on the ground that “both

Governments have claimed rights of sovereignty over these
cays”. 218 The Olaya-Kellogg Agreement was officially

communicated to Nicaragua by the Colombian Minister in

Managua prior to the approval of the 1928/1930 Treaty, without
219
occasioning comment or protest. Thus when Article I(2) of

the 1928/1930 Treaty provided that the three features were not
considered as included in that Treaty on the ground that

“sovereignty over [them] is in dispute between Colombia and

the United States of America”, and Nicaragua made no

observation, it was natural and obvious to conclude (1) that

Nicaragua itself had no claim to the three features; (2) that

without Article I(2), the three features would have been

218 Olaya-Kellogg Agreement, 10 Apr il 1928: CCM, Vol. II, Annex II,
preamble.
219 CCM, para. 4.42; Annex 49.

87considered as included in the Treaty; and (3) that “ el dominio”
or “sovereignty” 220 over the three features was an issue,

implying that they were capable of appropriation in sovereignty.

3.7. Colombia annexed to its Counter-Memorial a Navy

Study of September 2008, identifying a significant number of

high-tide elevations – i.e., islands – and even more low-tide
221
elevations, on Quitasueño.

3.8. In its Reply, Nicaragua did not address the Navy Study

on its merits. While repea ting its submission in the
alternative,222 it unequivocally denies that Quitasueño is capable

of appropriation in international law. 223

3.9. In this Chapter, Colombia will outline the settled

definition of an island in the international law of the sea

(Section C), then describe the facts of the geomorphology of the

area and the presence of numerous high tide elevations (Section

D), before turning to review the rather considerable legal history

of Quitasueño and its relevance to this dispute (Section E).

C. The Applicable Law

3.10. The modern consensus on islands as subjects of

sovereignty, and specifically on the definition of islands, is as

220 The French translation has “la possession”: CCM, para. 5.18.
221 CCM, Vol. II, Annex 171.
222 NR, p. 239, para. (2).
223 NR, paras. 4.27-4.43.

88set out in Article 10(1) of the 1958 Geneva Convention on the
Territorial Sea:

“Article 10

1. An island is a naturally formed area of
land, surrounded by water, which is above water
at high tide.

2. The territorial sea of an island is
measured in accordance with the provisions of
these articles.”

Article 10(1) is repeated verbatim in Article 121(1) of
UNCLOS. Article 121 as a whole reads:

“Article 121 Regime of islands
1. An island is a naturally formed area of

land, surrounded by water, which is above water
at high tide.

2. Except as provided for in paragraph 3, the
territorial sea, the contiguous zone, the exclusive
economic zone and the continental shelf of an
island are determined in accordance with the
provisions of this Convention applicable to other
land territory.

3. Rocks which cannot sustain human
habitation or economic life of their own shall
have no exclusive economic zone or continental

shelf.”

Article 10(1) has been cited by the Court as an undoubted rule
224
of customary international law. Colombia is a party to the

1958 Geneva Continental Shelf Convention, according to
Article 1(b) of which, an island is entitled to a continental shelf.

The definition of island is presumed to be that contained in

224 Maritime Delimitation and Territorial Questions between Qatar and
Bahrain, Merits, Judgment, I.C.J. Reports 2001, p. 40, at p. 99, para. 195.

89Article 10(1) of the 1958 Geneva Convention on the Territorial
225
Sea. Article 121(1) is subject to a qualification concerning
“rocks” in Article 121(3). The crucial point however is that

rocks are a kind of island; they meet the definition in Article

121(1) but, if they are unable to “sustain human habitation or

economic life of their own” they have no exclusive economic

zone or continental shelf. But it follows from the express
language of Article 121 that rocks, i.e., small features which are

above water at high tide, generate at least a territorial sea and a

contiguous zone, “determined in accordance with the provisions

of this Convention applicable to other land territory”.

3.11. In accordance with the position under customary

international law (and reflected in these treaty provisions), there

is no minimum size for an island; the only criteria are that the

feature in question must be (a) naturally formed, (b) surrounded

by water and (c) above water at high-tide. The position, which
began to be articulated in the work for the 1930 Hague

Codification Conference, is summarised by O’Connell in the

following terms:

“Provided that a feature corresponds with the
definition of an island, it generates a territorial

sea irrespective of its size or character. From
time to time suggestions have been made that
only islands capable of habitation ought to be
entitled to territorial waters, because the freedom
of the sea means freedom of utilization, and

useless restrictions on utilisation derogate from

225 DW Bowett, The Legal Regime of Islands in International Law ,
Oceana Publications, Dobs Ferry, New York / Sijtoff & Noordhoff,
Netherlands, 1979, p. 33.

90 that principle. It has been suggested that isolated

rocks serve no function in the economics of the
sea, nor any useful role in enabling a mariner to
denote where the territorial sea begins, unless it

is close to the coast. However, at the Third Law
of the Sea Conference the effort to distinguish
between features was confined to excluding from

the calculation of the EEZ or continental shelf,
but not from that of the territorial sea, rocks
which cannot sustain human habitation or
226
economic life of their own.”

3.12. The position adopted in 1958 was further consolidated

and definitively confirmed – as concerns the territorial sea and

the contiguous zone – in 1982. The interpretation which follows

from its express language is further confirmed, if confirmation is
227
needed, by the travaux of Article 121. Before settling on and

confirming the “automatic” language of Article 10(1) of the

1958 Geneva Convention, UNCLOS III considered most

possible alternatives, including:

x a minimum size requirement (Malta proposed 1 km ); 2 228

x a distinction between larger islands and “islets and small

islands, uninhabited and without economic life”, the
229
latter deprived of any maritime entitlement (Romania);

x the exclusion of any maritime entitlement for “rocks and

low-tide elevations” (Turkey); 230

226 DP O’Connell, The International Law of the Sea , ed., IA Shearer,
Oxford, OUP, 1982, Vol. I, p. 194.
227 These are usefully summarised in M Nordquist, ed., Virginia

228mentary, Kluwer, The Hague, 1995 Vol. III, 321-339.
229 Virginia Commentary, 328.
230 Virginia Commentary, 330.
Virginia Commentary, 333.

91 x the exclusion of non-adjacent rocks, except for safety
231
zones (14 African countries).

None of these proposals was adopted.

3.13. Whether a feature is above water at high-tide is quite

simply a matter of fact. In Qatar/Bahrain, a dispute arose over

the status of a small feature, Qit’at Jaradah, which the United

Kingdom in 1947 (consistently with its position at that time) had

not considered entitled to a territorial sea. The Court treated the
question of status as a pure question of fact, applying Article

10(1) of the Geneva Convention on the Territorial

Sea/UNCLOS Article 121(1):

“195. The Court recalls that the legal definition

of an island is ‘a naturally formed area of land,
surrounded by water, which is above water at
high-tide’ (1958 Convention on the Territorial
Sea and Contiguous Zone, Art. 10, para. 1; 1982
Convention on the Law of the Sea, Art. 121,

para. 1). The Court has carefully analysed the
evidence submitted by the Parties and weighed
the conclusions of the experts referred to above,
in particular the fact that the experts appointed by

Qatar did not themselves maintain that it was
scientifically proven that Qit’at Jaradah is a low-
tide elevation. On these bases, the Court
concludes that the maritime feature of Qit’at
Jaradah satisfies the above-mentioned criteria

and that it is an island which should as such be
taken into consideration for the drawing of the
equidistance line.” 232

231 Virginia Commentary, 330.
232 Maritime Delimitation and Territorial Questions between Qatar and
Bahrain, Merits, Judgment, I.C.J. Reports 2001, p. 40, at p. 99, para. 195.

92Having found that Qit’at Jaradah was an island and capable of
appropriation, the Court went on to deal, in turn, with the issue

of sovereignty over Qit’at Jaradah, 233 and with the issue of

delimitation of maritime zones relative to it. 234

3.14. Three points emerge from the Court’s handling of this

aspect of the case.

(1) Whether a feature qualifies as an island or a low-tide

elevation is a question of present-day fact. That some

other government may not have recognized that feature

as an island at some earlier point of time is not decisive,

or even particularly relevant. Nor is it decisive that the

feature in question “has never been reflected on nautical
235
charts as an island but always as a low-tide elevation”.

Expert evidence is admissible in determining the

question of fact.

(2) The Court accepted the categorical distinction between

an island (however small) and a low-tide elevation.

Sovereignty over islands is determined by the

international law of land territory (title and/or

effectivités). By contrast, sovereignty over low-tide
elevations is determined by the law of the sea, i.e., by

maritime delimitation. Thus in Qatar v Bahrain ,

sovereignty over a low-tide elevation, Fasht ad Dibl,

233 Maritime Delimitation and Territorial Questions between Qatar and
Bahrain, Merits, Judgment, I.C.J. Reports 2001, p. 40, at pp. 99-100, para.
197.
234 Ibid., pp. 104-109, para. 219.
235 Ibid., p. 99, para. 193.

93 236
located within Qatar’s territorial sea was with Qatar.

Likewise in Malaysia/Singapore, the status of South

Ledge, a low-tide elevation, was held to depend on the

maritime delimitation still to occur between Middle
Rocks and Pedra Branca/Pulau Batu Puteh. 237

(3) Even tiny features which qualify as islands “should as

such be taken into consideration for the drawing of the

equidistance line.” How much weight they are given in

the delimitation process depends on the circumstances, a
238
matter discussed in Chapter 6.

3.15. In the present case the feature in issue, Quitasueño, is not

a low-tide elevation but includes numerous high-tide elevations

or islands as defined in Article 10(1) of the Territorial Sea

Convention/Article 121(1) of UNCLOS. This will now be

demonstrated in fact, and relevant consequences drawn.

D. Existence of Islands and Low-tide Elevations on
Quitasueño and their Legal Consequences

3.16. In its Counter-Memorial, Colombia presented the results
of a survey of Quitasueño carried out by the Colombian

236
Maritime Delimitation and Territorial Questions between Qatar and
Bahrain, Merits, Judgment, I.C.J. Reports 2001, pp. 101-102, paras. 204-206.
237 Sovereignty over Pedra Branca/Pulau Batu Puteh, Middle Rocks
and South Ledge (Malaysia/Singapo re), Judgment of 23 May 2008, paras.
297-299, esp. para. 299: “the Court concludes that for the reasons explained
above, sovereignty over South Ledge, as a low-tide elevation, belongs to the
State in the territorial waters of which it is located.”
238 See below, paras. 6.35, 6.41-6.43, 6.63-6.70.

94Navy. 239 This demonstrated the presence on Quitasueño of at

least 8 high-tide elevations, plus many more low-tide

elevations. 240

3.17. In its Reply, Nicaragua gives three reasons for

dismissing the Navy Report: first , that it is “belated”; 241

secondly , that it contradicts earlier surveys: it “cannot change

the conclusions on the status of Quitasueño as it appears from

information and the practice of the Parties spanning almost two

centuries”, 242 and thirdly, that “the technical report prepared by

the Colombian Navy in September 2008 confirms that there are

not even small cays on Quitasueño”. 243

3.18. As to the first reason, the Navy Report was produced in

the Counter-Memorial, which was the first opportunity

Colombia had to do so. By contrast the expert report which the

Court relied on in Qatar-Bahrain was produced in its third

written pleading on the merits. 244 The time to produce evidence

of a claim is in the pleadings, up to and including the Rejoinder.

3.19. Secondly, it is not the case that earlier surveys ignored

the presence of at least some high-tide elevations. The

239 CCM, Vol. II, Annex 171, “Study on Quitasueño and
Alburquerque”, prepared by the Colombian Navy, September 2008.
240 See CCM, para. 8,21 and Figure 2.8, Vol. III, p. 15.
241 See NR, para. 4.34.
242 See NR, para. 4.34.
243
244 See NR, para. 4.35.
See Case concerning Maritime Delimitation and Territorial
Questions between Qatar and Bahrain , Merits, Bahraini Reply, 30 May
1999, Annex 13.

95Chamberlain letter of 1926 245was based on “what is believed to

be the only detailed examination of this extensive reef ever

made by a properly equipped surveying vessel, together with the

results of a running survey performed quite recently by another

of His Majesty’s ships”. Foreign Secretary Chamberlain

referred to “a small, solitary and quite uninhabitable rock” as

“normally visible above the surface of the sea”: this high-tide

elevation, according to British views at the time, was not
246
entitled to a territorial sea because it was uninhabitable. But

this is not the position under modern international law, which

considers as an island any high-tide elevation, irrespective of
247
size, as the Court confirmed in Qatar/Bahrain. The same

point can be made as to earlier, more cursory surveys.

3.20. In light of Nicaragua’s continued denial of the facts,

Colombia has commissioned a further expert report, by Dr
248
Robert W Smith, which is annexed to this Rejoinder. Dr

Smith served from 1975-2006 in the Office of the Geographer,

United States Department of State. He is a well-known
authority on the law of the sea, notably on technical aspects of

maritime delimitation. He was editor and main author of the

245 Analysed in CCM, para. 4.99; for the letter of 7 July 1926 see CCM,
Vol. II, Annex 47.
246 See CJ Colombos, The International Law of the Sea , 6thed.,
Longmans, London, 1967, p. 122. In this tradition, rocks, even if above

water at high-tide, were equated with low-tide elevations rather than islands:
247d., 125.
248 See above, paras. 3.13, 3.14.
RW Smith, “Mapping the Islands of Quitasueño (Colombia). Their
Baselines, Territorial Sea, and Contig uous Zone”, February 2010, Appendix
1 (hereafter also referred to as Smith Report).

96State Department’s publication, Limits in the Seas . His
curriculum vitae is Annex 1 to the Report.

3.21. Dr Smith was asked to express an independent opinion

on the following questions: “(1) what features exist, particularly

islands and low-tide elevations, on Quitasueño, and (2) how the

principles of the law of the sea may apply to determining
249
maritime jurisdiction from their baselines.” He spent 3 days

surveying Quitasueño in November 2009 with logistical support

from the Colombian Navy. Full details are provided in the

Report; his conclusions are summarised below. It is sufficient
for the moment to say that they fully confirm the presence of

islands on Quitasueño.

3.22. The two missions of 2008 and 2009 are the only two

surveys of Quitasueño which combine modern techniques (GPS

readers, aerial survey, accurate tide tables, etc.) with precise
250
information as to the requirements of the applicable law. On

technical questions of fact such as this, there is every reason to

prefer more recent to older processes – as, again, this Court did
in Qatar-Bahrain (where earlier opinions were also negative). 251

3.23. Thirdly , it is not the case that the Colombian Navy

Report “confirms that there are not even small cays on

Quitasueño”, 252 if by “cays” is meant islands within the meaning

249 Smith Report, para. 1.1.
250 See above, para. 3.16.
251 See above, paras. 3.13-3.14.
252 See NR, para. 4.35.

97of Article 10(1) of the Territorial Sea Convention. Evidently the
description of something as a cay is not decisive. Under

international law, the relevant criterion is that of Article 10(1),

repeated in UNCLOS Article 121(2). By that criterion,

Quitasueño is the site of several islands, as the 2008 and 2009

Reports show, and as will now be described in more detail by

reference to the Smith Report.

(1) I SLANDS AND LOW -TIDE ELEVATIONS ON Q UITASUEÑO

3.24. In response to the first question Dr Smith identified 54

features as low-tide elevations or high-tide elevations (i.e.

islands); each of them was measured and photographed. For 22

of them, he and his team were able to land: others were

measured from a boat, due to coral formations or wave
conditions. 253 He concluded that 34 of the 54 features are high-

tide elevations, i.e. “islands in accordance with international

law”; 254the other 20 are low-tide elevations. Of the 34 islands,

he was able to land on 19, thus assuring precision of
255
measurement. The result is shown in Figure 7 to Dr Smith’s

Report and in Figure 3.1 to this Rejoinder.

3.25. The total number of legally relevant features is not

precise. In many cases, closely related features were treated as
one (e.g. QS 9, QS 11, QS 13, QS 16, QS 27, QS 35, QS 38,

QS 39). 256 Some could not be approached closely due to wave

253 Smith Report, para. 2.3.
254 Smith Report, para. 3.2.
255 Smith Report, para. 3.2.
256 Smith Report, para. 3.2.

98conditions, thus measurements were more approximate (e.g.

QS 46, QS 50, QS 54). When in doubt, features were classified
257
as low-tide elevations. Dr Smith comments:

“due to the danger of navigating close to the

breaking waves at the eastern reef, as evidenced
by the several wrecked ships that clearly are
visible at different locations along the reef, on

site measurements were not possible. Visual
inspection from our boat about 50+ meters from
this area caused us to firmly believe that many
features were at or slightly above tidal datum all

along the reef. To me, the Quitasueño reef is
similar in nature to many others throughout the
world and to those used when discussing reefs as
258
legal baselines.”

3.26. There is a high level of concordance between the 24

points identified in the Navy Report of 2008 259 and points

identified by Dr Smith. 260 The reason why Dr Smith identified

30 more features is explained by the greater time taken and the

attempt to be comprehensive. But as Dr Smith explains, it was

not in the end possible to be completely comprehensive, given

wave conditions and the nature of this very large coral bank

with so many individual features above water at some or all

tides.

257 Smith Report, para. 2.6.
258
259 Smith Report, para. 2.7.
CCM, Vol. II, Annex 171, “Study on Quitasueño and
260urquerque,” prepared by the Colombian Navy, September 2008.
Annex 5 to the Smith Report contains the survey data, including the
coordinates for the 54 f eatures. 23 points are common to the 2 Reports and
have identical or virtually identical coordinates. On e point, Q4, is on the
Navy’s list but not on the Smith list. Dr Smith’s poi nt QS27 (Smith Report,
p.18) identifies as one point positions which the Navy classified as two (Q12
and Q13).

100 (2) L EGAL CONSEQUENCES OF THESE FACTS

3.27. The question is, then, how to characterize Quitasueño in

light of these facts. That it is not globally a mere low-tide

elevation is clear. Nor, contrary to the position taken by
Nicaragua, is it a submerged bank, if by this phrase Nicaragua

means totally submerged.

3.28. One option is simply to treat it as a collection of at least
34 islands, each of which is entitled, at least, to a territorial sea

and continuous zone in accordance with the rules identified

above. It should be noted that the low tide elevations identified

by Dr Smith are all close to other features which qualify as
islands. Thus the reason all 54 features can be used is that the

low-tide elevations are all well within 12 nm of the islands.

“[T]he furthest any of the low-tide elevations is
from lan261s QS 44 which is only 1.62 miles from
QS 45.”

Figure 3.2 illustrates the territorial sea and contiguous zone

generated by these features.

3.29. There is a further possibility, still within the context of
territorial sea and contiguous zone, by reference to fringing

reefs. These are the subject of special provision in Article 6 of

UNCLOS which states:

“In the case of islands situated on atolls or of
islands having fringing reefs, the baseline for

measuring the breadth of the territorial sea is the

261 Smith Report, para. 6.5.

101 seaward low-water line of the reef, as shown by
the appropriate symbol on charts officially

recognized by the coastal State.”

There is such a reef on Quitasueño. 262

3.30. There is also one low-tide elevation on which a

lighthouse is located (QS1), which could under Article 7(4) be

used to initiate a system of straight baselines in conjunction with
the fringing eastern reef and the outer islands.

3.31. Thus there is no reason to believe that the application of

the international law rules concerning delimitation would

produce any different result if Quitasueño was subjected to

standard processes applicable to a collection of islands, or to a
regime of straight baselines.

E. Quitasueño as a Unit

3.32. In the Channel Islands arbitration, the question arose as

to the status of the Eddystone rock, a feature more than 12 nm
263
off-shore on which was built a famous Lighthouse. There
was some doubt whether the Lighthouse had been constructed

on an island or a low-tide elevation. Moreover the case arose

for decision in 1977, half-way through UNCLOS III, at a time

when the eventual settlement of Article 121 was still contested.

The Court of Arbitration, without deciding whether the feature

262
263 Smith Report, para. 4.9.
Arbitration Award relating to the Continental Shelf boundary in the
Western Channel approaches (France, United Kingdom), Court of
Arbitration, 30 June 1977, 54 ILR 6.

103was an island or a low-tide elevation, held that it could be used

as a basepoint for continental shelf delimitation. In particular,

despite earlier British practice to the contrary (pursuant to the

then-British thesis reflected in the Chamberlain letter of
264
1926 ), Great Britain in its modern practice had consistently
treated it as an island, and France had “acknowledged the

relevance of the Eddystone as a basepoint” in 1964-5. 265

3.33. For present purposes the case is significant in several

ways:

(1) What matters is the “contemporary” practice of the

claimant State, measured against the current definition of

an island. In other words, what is its status at the time

the delimitation is performed?

(2) Even if the Eddystone was only a rock, the way it had

been treated by other States was sufficient to justify its

use as a continental shelf basepoint.

3.34. In the case of Quitasueño, there have been no

negotiations between Nicaragua and Colombia over maritime

delimitation, so that aspect of the decision on this point is

irrelevant. But until recently, Nicaragua itself had treated

Quitasueño as capable of appropriation in sovereignty, and

Colombia’s own practice has been consistent. Nicaragua now

can only sustain the contrary proposition by a factual

264
265 Above, paragraph 3.19.
54 ILR 6, para.140.

104misrepresentation, viz., that Quitasueño is entirely underwater, a

“submerged bank”.

3.35. State practice concerning Quitasueño was described in

the Counter-Memorial. To recall:

(1) Quitasueño is a single, large bank, with a fringing reef

and many high-tide and low-tide elevations. 266

(2) Both before and after 1928, Colombia has always

considered it as part of the Archipelago. 267

(3) Prior to 1980 it was never shown as Nicaraguan on
268
Nicaraguan official maps. By contrast it was shown as

Colombian on many maps, including maps current at the
269
time of the 1928/1930 Treaty.

(4) Colombia regulated fishing around Quitasueño, by issue

of permits, under strict regulations and measures to

ensure the conservation of resources, etc., and no other
270
State did so.

(5) Colombia has conducted operations relating to the

control of unauthorized fishing, search and rescue work,

patrolling and anti-narcotics interdiction operations in

and around Quitasueño. .271

266
CCM, paras. 2.25-2.29.
267 CCM, paras. 2.68-2.72.
268 See CCM, paras. 2.96-2.97.
269 See CCM, paras. 275-2.85.
270 See CCM, paras. 3.32-3.42, 3.106.
271
See e.g., CCM, paras. 3.81.

105 (6)Colombia has enacted environmental legislation

extending to Quitasueño. 272

(7) Colombia has operated and maintained lighthouses and

other navigational aids on Quitasueño. 273

3.36. The controversy with the United States over the three

features was also rec ounted in detail in the Counter-Memorial.

Again, to summarise:

(1) The United States was aware from the 19 thcentury

onwards that Colombia considered Quitasueño part of

the Archipelago and claimed it as such.

(2) During the course of the dispute, the United States made

no relevant distinction between Quitasueño and the other

cays; all were the subject of its claim to sovereignty.

(3) The United States was on record internally as doubting

the validity of its own claim and as ready to concede to

Colombia if pressed.

(4) It was only in 1971 that the United States, for the first

time since 1856, considered that Quitasueño was

different and that it was not capable of appropriation in

sovereignty, despite the fact that the United States had

long purported to grant guano extraction concessions to
its citizens. These concessions were objected to and

protested by Colombia that, in turn, continued to exercise

its jurisdiction over it. Despite that suggestion by the

272
273 See e.g., CCM, paras. 3.89.
See e.g., CCM, paras. 3.133-3.154.

106 United States, Colombia’s position that it was capable of

appropriation never wavered. 274 Functionally, the effect

of the United States change of position was to encourage

Colombia to concede more by way of access to United

States’ fishing vessels.

(5) Colombia having done so, in practice the United States
has accepted the continuing exercise of Colombian

authority over the waters around Quitasueño, as well as

its operation of the lighthouse ownership of which was

transferred to it “in perpetuity” in 1972. As recalled in

the Counter-Memorial, that lighthouse was later replaced

by the Colombian Navy, that subsequently also installed

another lighthouse in the southern end of Quitasueño. 275

(6) In particular, in 1981, shortly after the ratification of the

1972 Agreement, the United States acknowledged

“Colombia’s incontestable de facto presence and

enforcement activities in the area, over a long period of
276
time”.

(7) In 1983 was concluded the Colombia-United States

Exchange of Notes on the implementation of fishing

rights in the areas adjacent to the three cays, 277including

274 See, e.g., NM, Annex 33b, Colombia’s note in the 1972 Exchange
of Notes concerning the status of Quitasueño, annexed to the 1972 Vazquez-
Saccio Treaty. The US Note is at NM Annex 33a.
275
276 CCM, para. 2.29.
US Aide Memoire of 16 July 1981, CCM Annex 60; cited and
277lysed CCM, para. 4.58(3).
CCM, Annex 8. It is noteworthy that the 1983 Exchange of Notes
was registered with the UN Secretary-General and as such, appears in the
UNTS (2015 UNTS 3) and the US treaty series: 35 UST 3105, TIAS 10842.

107 Quitasueño, pursuant to which Colombia and the United

States have held meetings to agree on bans and other
278
preservation measures; and United States-vessels

continue to notify and obtain permits from Colombia
279
when they intend to fish in the areas of the cays.
There was no protest or Nicaraguan reaction in this

regard.

3.37. This practice, of which the foregoing are examples, is

incontrovertible evidence of long-standing Colombian interest

and presence, and of Nicaraguan absence and disinterest, in

Quitasueño. But it goes further than that: it goes to the status of
Quitasueño as an entity in itself. The Quitasueño fishery has

been regulated and managed by Colombia with the express

recognition or at least acquiescence of other States. Quitasueño

has never been treated as simply part of the high seas, not even

by the United Kingdom (despite the Chamberlain letter). Even

the exchanges with the United Kingdom originated in the turtle
fishing activities in Quitasueño of British subjects from the

Cayman Islands, facilitated by its reef formations and features.

As for Nicaragua, it was in large part silent. The Nicaraguan

assertion of coerced exclusion from natural resources actively

claimed by it is contrary to all the evidence and is entirely

without foundation.

278
279 CCM, paras. 4.62-4.77, Annexes 11, 12, 13, 15, 16.
CCM, Annexes 11, 12, 13, 15, 16.

1083.38. In international law, State practice, especially consistent

practice over time, is of high value. A State which silently

acquiesced in the exercise of authority by another State should
not be permitted subsequently to claim the territory concerned

on a wholly different and new hypothesis. It must be stressed

that the status of Quitasueño (as of the other two features) vis-à-
vis Nicaragua was settled – at the latest – by 1928. It cannot

have been determined by reference to a continental shelf

doctrine which had its origins in 1945 and was only definitively
accepted by States as a whole in 1958.

F. Conclusions

3.39. For these reasons:

(1) Quitasueño is a group of islands, low-tide elevations
with a fringing reef constituting distinctive and

substantial maritime feature and as such is capable of

appropriation in international law.

(2) As with the other cays it appertains to Colombia.

(3) Quitasueño is entitled to the full range of maritime

zones.

109 PART TWO

MARITIME DELIMITATION Chapter 4

NICARAGUA’S FUNDAMENTAL CHANGE OF

POSITION

A. Nicaragua’s Abandonment of Its Single Maritime
Boundary Claim

4.1. Nicaragua’s Application introducing the proceedings

before the Court requested the Court to determine the single

maritime boundary (continental shelf and EEZ) between the two
countries. That this represented Nicaragua’s considered position

with respect to delimitation was confirmed in Nicaragua’s

Memorial where Nicaragua repeatedly emphasized that it was

seeking the determination of a single maritime boundary which

Nicaragua argued should be based on a median line between the
mainland coasts of the Parties. As was stated at paragraph 3.28

of the Memorial:

“In accordance with the provisions of the Law of

the Sea Convention and, in so far as relevant, the
principles of general international law, Nicaragua
claims a single maritime boundary based upon
the median line dividing the areas where the
coastal projections of Nicaragua and Colombia
converge and overlap.” 280

4.2. Nicaragua has now radically changed its position. It has

abandoned its request for the Court to delimit a single maritime
boundary based on a mainland-to-mainland median line; it has

280 NM, para. 3.28; and see NM, pa. 24, 3.3, 3.37, 3. 44, 3.49-3.50,
3.137-3.141, and Submissions para. (9).

113discarded its reliance on geography in favour of an outer
continental shelf claim based exclusively on geology and

geomorphology; and it has introduced a brand new claim to

divide equally what is alleged to be the overlapping physical

continental shelves of the Parties’ mainland coasts. None of this

has any validity in fact or in law.

(1) V INDICATION OF COLOMBIA ’S POSITION

4.3. Colombia’s Counter-Memorial addressed the case that

Nicaragua had advanced in its Application and Memorial. In

that pleading, Colombia demonstrated that Nicaragua’s
approach was fundamentally misguided given that Nicaragua’s

single maritime boundary claim fell within an area where

Nicaragua had no legal entitlement. This was because the

mainland coasts of the Parties are more than 400nautical miles

apart, and Nicaragua’s claimed median line boundary was thus
situated more than 200nautical miles from the mainland coast

and baselines of Nicaragua. As Colombia pointed out, there are

no areas subject to the delimitation of a single maritime

boundary (including of the water-column or EEZ) where one
State has no legal entitlement.81The position was illustrated on

Figure.1 to Colombia’s Counter-Memorial which is

reproduced for convenience here as Figure R-4.1.

4.4. In a quite cavalier manner, Nicaragua now (and

belatedly) admits that what Colombia sa id is correct – namely,

that there can be no single maritime boundary involving an EEZ

281 CCM, paras. 7.8-7.16.

114delimitation between the mainland coasts of the Parties because
they are separated by a distance of more than 400 nautical miles.

In the words of the Nicaraguan Reply:

“There is no need for a delimitation of exclusive
economic zones claimed respectively by
Nicaragua and Colombia because the mainland
coasts of the two States are separated by a
distance of more than 400 nautical miles.” 282

4.5. This remarkable volte face is only partly correct.
Nicaragua is right in agreeing with Colombia that there can be

no delimitation of a single maritime boundary between the

mainland coasts of the Parties because of the distances involved.

That is precisely why Colombia has underlined the fact that its

mainland coast has no relevance to the delimitation. But there
most certainly is still a need for the delimitation of the single

maritime boundary, including the EEZ, between the truly

relevant coasts of the Parties – the coasts of the Colombian

islands comprising the San Andrés Archipelago and the opposite
coast of Nicaragua.

4.6. Notwithstanding this, the Nicaraguan Reply now

advances a totally new and even more exaggerated claim to the
effect that the Court should only delimit the Parties’ respective

continental shelves, not a single maritime boundary. Nicaragua

maintains that the Court’s Judgment on jurisdiction provoked

her to review her general position and to undertake a more

detailed analysis of the delimitation including additional

282 NR, para. 1 to p. 59 and para. 2.10.

116geological and hydrographic studies, and hence now to move to
283
claim only a continental shelf boundary. However, the

Court’s Judgment on jurisdiction had no bearing at all on this

and provides no justification for Nicaragua’s change of position.

4.7. As will be demonstrated, this new claim is untenable and

inadmissible. Moreover, Nicaragua’s assertion that a continental

shelf delimitation will completely delimit the areas belonging to

the Parties and “in this respect it will be the only pertinent or
single maritime boundary affecting the Parties” is unintelligible

and misconceived. 284 What Nicaragua is now seeking from the

Court is (i) no delimitation of the exclusive economic zone or

column of water, rather (ii) recognition of a claim to extended

continental shelf rights under Article 76 of the 1982 Convention

- a position that is incompatible with the fact that Colombia is
not a Party to the Convention and that there are no areas of outer

continental shelf in this part of the western Caribbean Sea, and

the ambit of which would in any event fall to be submitted to

and considered by the United Nations Commission on the

Limits of the Continental shelf, not the Court; (iii) a
determination of Colombia’s own physical continental shelf

extending from its mainland (but ignoring the continental shelf

entitlements of its islands) which is irrelevant given the

existence of Colombia’s 200 nautical mile continental shelf and

EEZ entitlements as a matter of law; and (iv) a delimitation

283 NR, para. 25.
284 NR, para. 26.

117based on a division of allegedly overlapping physical

continental shelves. None of this has any merit.

(2) T HE IRRELEVANCE OF GEOLOGY AND GEOMORPHOLOGY

4.8. Despite Nicaragua’s new-found reliance on geology and
geomorphology to support alleged rights to an outer continental

shelf at Colombia’s expense, it is worth recalling what

Nicaragua had to say about geology and geomorphology in its

Memorial. The relevant passage reads as follows:

“The position of the Government of Nicaragua is
that geological and geomorphological factors

have no relevance for the delimitation of a single
maritime boundary within the delimitation area.
As demonstrated by the pertinent graphics, the
parties have overlapping legal interests within the

delimitation area, and it is legally appropriate that
these should be div285d by means of an
equidistance line.”

4.9. That was the sum total of Nicaragua’s submissions on
what its Memorial characterized as “The Relevance of Geology

and Geomorphology”. Notwithstanding this, in its Reply

Nicaragua accuses Colombia of “having no adequate

appreciation either of the geomorphology of the seabed in the

delimitation area or of the law relating to entitlement to shelf
areas”.286

285 NM, para. 3.58.
286 NR, para. 3.15.

1184.10. This is an extraordinary argument. Not only does it
ignore the fact that it was the Nicaraguan Memorial that

emphasized the irrelevance of geology and geomorphology; it

also fails to appreciate that Nicaragua’s previous position was

that geographical factors were predominant for delimitation. As

Nicaragua rightly noted in its Memorial: “The judicial
authorities always insist that the choice of the pertinent method

of delimitation ‘is essentially dependent on geography’”. 287

Colombia did not address the geomorphology of the seabed or

the law of entitlement to extended continental shelf rights in its
Counter-Memorial because they were not raised in Nicaragua’s

Application or its Memorial and they are irrelevant to the case.

4.11. Nicaragua’s new continental shelf claim now falls well
within 200nautical miles of Colombia’s coasts, including the

coasts of both its islands and its mainland. This can be seen on

Figure R-4.2 which is based on Figure 3.10 to the Nicaraguan

Reply. However, the Court has made it clear that, under the

distance formula encapsulated in the 1982 Convention and
reflected in customary international law, a State has a legal

entitlement to maritime rights out to a distance of 200 nautical

miles from its coast regardless of the geology or geomorphology

of the continental shelf. As the Court observed in its Judgment
in the Libya-Malta case:

“The Court however considers that since the
development of the law enables a State to claim
that the continental shelf appertaining to it

287 NM, para. 3.14.

119 extends up to as far as 200miles from its coast,
whatever the geological characteristics of the

corresponding sea-bed and subsoil, there is no
reason to ascribe any role to geological or
geophysical factors within that distance either in
verifying the legal title of the States concerned or

in proceeding to a delimitation as between their
claims. This is especially clear where
verification of the validity of title is concerned,
since, at least in so far as those areas are situated

at a distance of under 200miles from the coasts
in question, title depends solely on the distance
from the coasts of the claimant States of any
areas of sea-bed claimed by way of continental
shelf, and the geological or geomorphological

characteristic288f those areas are completely
immaterial.”

And the Court added:

“Neither is there any reason why a factor which
has no part to play in the establishment of title
should be taken into account as a relevant
circumstance for the purposes of delimitation.” 289

4.12. Given that Nicaragua’s new claim rests entirely on these

kinds of geological and geomorphological factors and falls

within 200nautical miles of Colombia’s coasts, it is legally

irrelevant and provides no basis for delimitation in the present
case.

288
Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
289orts 1985, p. 35, para. 39.
Ibid., p. 35, para. 40.

121(3) N ICARAGUA ’S NEW CLAIM IS EVEN MORE EXTREME THAN

THE CLAIM ADVANCED IN ITS M EMORIAL

4.13. There is a further striking aspect of Nicaragua’s new

position which results from its continental shelf claim. While
Nicaragua did not provide the co-ordinates of its mainland-to-

mainland equidistance line in its Memorial, a comparison

between Figure1 to the Nicaraguan Memorial and Figure3-11
of the Reply shows that Nicaragua is now claiming a boundary

much further to the east ( i.e., towards the mainland Colombian

coast) than was claimed in the Memorial. This can be seen on

Figure R-4.3. This new, more aggressive, claim is some 100
nautical miles closer to Colombia’s mainland coast than

Nicaragua’s previous claim and results in Nicaragua claiming a

large additional expanse (over 53,000 km²) over and above what
it had previously claimed.

4.14. Neither claim has any legitimacy and both are hugely

inflated. Nonetheless, the introduction at the Reply stage of the
proceedings of an even more extreme claim highlights the

artificial and arbitrary approach to delimitation adopted by

Nicaragua and casts serious doubts on the credibility of

Nicaragua’s claims in general.

B. Nicaragua’s New Continental Shelf Claim Is
Inadmissible: The Issue for the Court Remains the
Delimitation of a Single Maritime Boundary

4.15. Article 40, paragraph 1, of the Court’s Statute provides,

that in a case brought by application, “the subject of the dispute”

122shall be indicated. Article 38, paragraph 1, of the Rules of

Court follows up on this by providing that, when proceedings

before the Court are instituted by means of an application

pursuant to Article 40 of the Statute, “the application shall

indicate the party making it, the State against which the claim is
brought, and the subject of the dispute” . Paragraph 2 of Article

38 of the Rules further provides that the application “shall also

specify the precise nature of the claim , together with a succinct

statement of the facts and grounds on which the claim is
290
based.”

4.16. In so far as the issue of maritime boundaries is

concerned, Nicaragua’s Application made it clear that Nicaragua

considered the subject of the dispute was the delimitation of a

single maritime boundary. This was reflected in Nicaragua’s

Application as follows:

“Second, in the light of the determinations
concerning title requested above, the Court is

asked further to determine the course of the
single maritime boundary between the area of
continental shelf and exclusive economic zone
appertaining respectively to Nicaragua and

Colombia, in accordance with equitable
principles and relevant circumstances recognized
by general international law as applicable to such
a delimitation of a single maritime boundary.” 291

290
291 Emphasis added.
Nicaraguan Application, para. 8.

1244.17. Nicaragua’s request for a single maritime boundary was
292
repeated several times in its Memorial. Nicaragua further

indicated that the type of delim itation requested in the present
proceedings “is essentially the same as that requested in the Gulf

of Maine case and the applicable law is similar.” 293 The Gulf of

Maine case, it will be recalled, involved the delimitation of a

single maritime boundary extending only to a distance of 200

nautical miles from the coasts of the Parties. The Nicaraguan

Memorial also specified the precise nature of its claim in its last

submission as follows:

“the appropriate form of delimitation, within the

geographical and legal framework constituted by
the mainland coasts of Nicaragua and Colombia,
is a single maritime boundary in the form of a
294
median line between these mainland coasts.”

4.18. The Court has noted that “[t]here is no doubt that it is for

the Applicant, in its Application, to present to the Court the

dispute with which it wishes to seise the Court and to set out the

claims which it is submitting to it.” 295 As pointed out above,

however, the subject of the dispute presented by Nicaragua in its

Application, and the nature of its claim, has completely changed

in the Nicaraguan Reply. No longer does Nicaragua request the

delimitation of a single maritime boundary – a proposition

which it had previously identified as the “central question” in its

292 See note 280 above.
293 NM, para. 3.8.
294 NM, Submissions, para. 9.
295 Fisheries Jurisdiction (Spain v. Cana da), Jurisdiction of the Court,
Judgment, I.C.J. 1998, p. 447, para. 29.

125Memorial 296 – and no longer does Nicaragua claim that that the

“appropriate form of delimitation” should be a mainland-to-

mainland median line. Nicaragua also abandons its earlier

position that “geological and geomorphological factors have no
relevance for the delimitation of a single maritime boundary

within the delimitation area.” 297

4.19. Instead, Nicaragua’s Reply advances a much more

exaggerated claim that the Court should determine a continental
shelf boundary between the two Parties arrived at exclusively on

the basis of geological and geomorphological factors.

Nicaragua nowhere explains why it has so fundamentally

changed its claim or why it could not have made such a claim in

its Application if the delimitation of the outer continental shelf

had been its real intention. What is clear is that the Reply has
gone far beyond the limits of the claim set out in the Nicaraguan

Application, and has now submitted a dispute which is

fundamentally different in character from the subject-matter of

the original dispute.

4.20. The Court (and its predecessor) has held on a number of

occasions that a new claim which changes the subject of the

dispute originally submitted is inadmissible. As the Permanent

Court of International Justice observed in its Order of 4
February 1933 in the case concerning the Prince von Pless

Administration (Preliminary Objection) -

296 NM, para. 3.37.
297 NM, para. 3.58

126 “under Article 40 of the Statute, it is the
Application which sets out the subject of the
dispute, and the Case, though it may elucidate the

terms of the Application, must not go beyo298the
limits of the claim as set out therein....”

4.21. This principle was further elaborated by the Court in its

Judgment on the preliminary objections in the Phosphate Lands

in Nauru case. There, the Court upheld a preliminary objection

introduced by Australia that a new claim raised by Nauru

relating to the overseas assets of the British Phosphate

Commission not mentioned in its Application was
inadmissible. 299 In upholding this objection, the Court cited the

reasoning of the Permanent Court in its Judgment in the case

concerning the Société Commerciale de Belgique where the

Permanent Court held:

“It is to be observed that the liberty accorded to
the parties to amend their submissions up to the

end of the oral proceedings must be construed
reasonably and without infringing the terms of
Article 40 of the Statute and Article 32,
paragraph 2, of the Rules [now Article 38 (1) of
the Rules] which provide that the Application

must indicate the subject of the dispute....”

The Permanent Court then continued –

“it is clear that the Court cannot, in principle,

allow a dispute brought before it by application
to be transformed by amendments in the

298 P.C.I.J., Series A/B, No. 52, p. 14.
299 Certain Phosphate Lands in Nauru (Nauru v. Australia),
Preliminary Objections, Judgment, I.C.J. Reports 1992, p. 267, paras. 70-71.

127 submissions into another dispute which is
different in character.”300

4.22. That is precisely what Nicaragua has done in its Reply.
The entire character of the dispute originally submitted by

Nicaragua has changed from a case concerning the delimitation

of a single maritime boundary based on a mainland-to-mainland

median line where geology and geomorphology had no role to

play into a dispute over Nicaragua’s entitlement to an extended
continental shelf beyond 200 nautical miles from its baselines

and a request for the delimitation of the continental shelves of

the Parties based exclusively on geological and

geomorphological factors.

4.23. Although Nicaragua does not advance such a position in

its Reply, to the extent it may subsequently try to argue that

there is a link between the original claim made in the

Application and the new claim advanced in the Reply in so far as

both could be said to relate to maritime delimitation, such an
argument would be erroneous. The Court has clearly stated that

for a claim to be held to have been, as a matter of substance,

included in the original claim –

“it is not sufficient that there should be links
between them of a general nature. An additional

claim must have been implicit in the Application
.... or must arise ‘directly out of the question

300 Société Commerciale de Belgique, Judgment, 1939, P.C.I.J., Series
A/B, No. 78, p. 173.

128 which is the subject matter of the
Application’“. 301

4.24. There is nothing implicit about Nicaragua’s new

continental shelf claim in the Application or, indeed, in the
Nicaraguan Memorial. Moreover, the question of Nicaragua’s

entitlement to an extended continental shelf, and the

delimitation of that shelf based on geological and

geomorphological factors cannot be said to arise directly out of

the question that was the subject-matter of the Application,

which was the delimitation of a single maritime boundary based
solely on geographical factors.

4.25. Even at the jurisdictional objections stage of the case,

Nicaragua continued to emphasize that the subject-matter of the

dispute was the delimitation of a single maritime boundary.
This was expressed very clearly in Nicaragua’s Written

Statement dated 24 January 2004 responding to Colombia’s

preliminary objections. At paragraph 3.41 of that pleading, and

after citing the Prince von Pless, Phosphate Lands in Nauru and

Société Commerciale de Belgique cases referred to above,

Nicaragua stated the following:

“In view of both the context of the Application
itself and the clarification made in the Memorial,
it will be apparent:

301 Certain Phosphate Lands in Nauru (Nauru v. Australia),
Preliminary Objections, Judgme nt, I.C.J. Reports 1992, p. 266, para. 67,
citing Temple of Preah Vihear, Mer its, I.C.J. Reports 1962p. 36 and
Fisheries Jurisdiction (Federal Republic of Germany v. Iceland), Merits,
I.C.J. Reports 1974, p. 203, para. 72.

129 - that the subject-matter of the dispute is
the determination of a single maritime
boundary between the areas of continental
shelf and exclusive economic zones

appertaining respectively to Colombia and
Nicaragua.”

4.26. The position could not be clearer. The subject-matter of

the dispute before the Court is the delimitation of a single
maritime boundary not, under Nicaragua’s new claim, whether it

is entitled to an outer continental shelf and the delimitation of

that shelf with the physical continental shelf of Colombia. To

apply the Court’s words from its Judgment on the preliminary

objections in the Nauru case to Nicaragua’s new claim, if the
Court “had to entertain such a dispute on the merits, the subject

of the dispute on which it would ultimately have to pass would

be necessarily distinct from the subject of the dispute originally
302
submitted to it in the Application.”

4.27. This can be seen by considering a host of questions that

Nicaragua’s new claim gives rise to that do not arise out of, or

bear any relation to, Nicaragua’s original claim and which

present issues that more properly fall within the purview of the
United Nations Commission. These include, but are not limited

to:

x whether there is any scope for extended continental shelf

claims in this part of the Caribbean (which there is not);

302 Certain Phosphate Lands in Nauru (Nauru v. Australia),
Preliminary Objections, Judgment, I.C.J. Reports 1992, p. 266, para. 68.

130x the question whether Nicaragua has any entitlement at all
to an extended continental sh elf in the area, particularly

in circumstances where the claim has not been submitted

to, let alone considered by, the United Nations

Commission on the Limits of its Continental Shelf;

x whether Nicaragua has satisfied the appurtenance test for

claiming an extended continental shelf;

x whether the location and scientific validity of the foot-of-

the-slope points that Nicaragua posits for determining

the extent of its own and Colombia’s continental shelves
have an established scientific basis;

x the relevance and sufficiency of the bathymetric and
geomorphological profiles that Nicaragua has submitted

in support of its extended continental shelf claim;

x the issue of plate boundaries and plate tectonics raised in
the Reply;

x the relevance and validity of thickness of sediment
calculations and the calculation of outer continental shelf

limits for both Parties based on the Hedburg formula and

the “Irish” test;

x and the relevance, or more accurately lack thereof, of

positing a geological limit to the continental shelf off

Colombia’s mainland coast when that coast, as well as
the coasts of Colombia’s islands, generate automatic

continental shelf and EEZ entitlements extending to a

distance of 200 nautical miles regardless of the

131 geological and geomorphological characteristics of the

sea-bed and subsoil.

4.28. All of these matters are wholly extraneous to the original

claim and would lead the Court into areas not even remotely
contemplated in the Application or in Nicaragua’s Memorial (or

even in its pleadings on the jurisdictional objections). Their

consideration would result in a basic and fundamental

transformation of the subject-matter of the dispute originally

submitted in the Application and hitherto addressed by the

Parties (and by the Court at the jurisdictional phase).

4.29. In this respect, it is worth recalling that in the Costa

Rica-Nicaragua case, Nicaragua itself argued that a claim

advanced by Costa Rica relating to subsistence fishing along the

San Juan River not raised in Costa Rica’s Application was
inadmissible because the claim did not arise “directly out of the

question which is the subject-matter of that Application”. 303

Unlike in this case, however, the actions giving rise to the new

claim of Costa Rica only arose after the institution of the

proceedings, and the claim was thus raised by Costa Rica in its

Memorial. Nicaragua did not raise an admissibility objection in

its Counter-Memorial, but rather addressed the claim on its
merits. It was only in the Rejoinder that Nicaragua argued that

the claim was not admissible.

303
Rejoinder of Nicaragua in the Dispute Regarding Navigational and
Related Rights (Costa Rica v. Nicaragua), para. 6.30 quoting Fisheries
Jurisdiction (Fed eral Republic of Germany v. Iceland), Merits,
Judgment, ICJ Reports 1974, p. 203, para. 72.

1324.30. In the light of these factors, the Court did not accept
Nicaragua’s objection to admissibility. The Court also observed

that there was a sufficiently close connection between the claim

relating to subsistence fishing and the Application because

Costa Rica, in addition to invoking the relevant treaty, had also

invoked “other applicable rules and principles of international
304
law” in its Application. In contrast, and as already shown, the

facts of the present case are very different.

4.31. What is more, Nicaragua’s position on the applicable law

has also changed as a result of its new claim. In its Application

and Memorial, Nicaragua stressed that the applicable law in the

case comprises “principles of general international law” and that

“these principles include the principles of maritime delimitation
305
relating to cases involving single maritime boundaries”. To

the extent that Nicaragua no longer claims a single maritime

boundary, its view of the applicable law is now primarily based

on the interpretation and application of Article 76 of the Law of
the Sea Convention relating to rights to the outer continental

shelf and a division of that shelf based on natural

prolongation. 306 This is yet another element of Nicaragua’s new

claim which is removed from the position it adopted in its

Application and which underscores the fundamentally changed

nature of the subject-matter of the dispute now advanced by

304 Case concerning the Dispute Regardi ng Navigational and Related
Rights (Costa Rica v. Nicaragua), Judgment of 13 July 2009, paras. 134-139.
305 NM, para. 3.37.
306 NR, paras. 3.29 and ff.

133Nicaragua as compared with the dispute it originally submitted

to the Court in its Application and Memorial.

4.32. These considerations also distinguish Nicaragua’s new

claim in this case from the issue that the Court was confronted

with in the Nicaragua-Honduras case where, in its submissions
during the oral hearings, Nicaragua requested the Court to

decide the question of sovereignty over the islands and cays

within the area in dispute.

4.33. The Court ruled that this request was admissible (a

matter which Honduras had not contested) because the claim

relating to sovereignty over the islands in the area in dispute was

“inherent in the original claim relating to the maritime

delimitation between Nicaragua and Honduras in the Caribbean
Sea.” 307 As the Court explained:

“To draw a single maritime boundary line in an
area of the Caribbean Sea where a number of
islands and rocks are located the Court would
have to consider what influence these maritime
features might have on the course of that line. To

plot that line the Court would first have to
determine which State has sovereignty over the
islands and rocks in the disputed area. The Court
is bound to do so whether or not a formal claim
has been made in this respect. Thus, the claim

relating to sovereignty is implicit in and arises
directly out of the question which is the subject-
matter of Nicaragua’s Application, namely the
delimitation of the disputed areas of the territorial

307 Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
p. 35, para. 115.

134 sea, continental shelf and exclusive economic
zone.” 308

4.34. In contrast, Nicaragua’s new continental shelf claim in
this case is in no way “implicit in” the question that was the

subject-matter of Nicaragua’s Application and does not “arise

out of” that question. The request for a single maritime

boundary based on geographical factors submitted in the

Application and the Memorial did not depend on a
determination of the legitimacy of extended continental shelf

rights under Article 76 of the 1982 Convention. Nor did the

dispute presented in the Application hinge on the identification

of the limits and division of the Parties’ alleged natural

prolongations defined on geological and geomorphological
grounds. These are matters that are related solely to

Nicaragua’s new claim, but which had nothing to do with the

subject-matter of the single maritime boundary dispute

originally submitted to the Court.

4.35. In these circumstances, Nicaragua’s new extended

continental shelf claim, as well as its request for the Court to

delimit the continental shelf boundary between the Parties, is
inadmissible. The subject-matter of the case introduced in the

Application over which the Court has jurisdiction remains the

delimitation of a single maritime boundary between the Parties.

That was the issue that Nicaragua consented to address in its

308 Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
p. 35, para. 114.

135Application and Memorial, and it is the case that Colombia

responded to in its Counter-Memorial. There are no grounds for

now changing the entire basis of the case.

C. Nicaragua’s New Continental Shelf Claim Has
No Merit

4.36. While Colombia’s principal position is that Nicaragua’s

new claims to extended continental shelf rights and a

delimitation of the continental shelf based on those claims are

inadmissible, Colombia will demonstrate in this section that the
claim raised in Nicaragua’s Reply is without merit in any event,

it being recalled that Colombia’s Counter-Memorial already

demonstrated the invalidity of Nicaragua’s original single

maritime boundary claim.

(1) T HERE ARE NO AREAS OF EX TENDED CONTINENTAL
SHELF IN THE WESTERN CARIBBEAN

4.37. As Figure R-4.4 shows, there are no areas of outer

continental shelf within this part of the Caribbean Sea given that

there are no maritime areas that lie more than 200 nautical miles
from the nearest land territory of the riparian States. Indeed,

prior to the filing of Nicaragua’s Reply, no State in the region

(including Nicaragua) had ever suggested that an extended

continental shelf exists in this part of the Caribbean. This can
be seen on Figure R-4.5. It follows that there are no areas of

extended continental shelf in this region and no basis for

Nicaragua’s outer continental shelf claim which, apart from
being factually and procedurally deficient, is legally irrelevant

136to questions of both entitlement and delimitation in this dispute.

t

(2) A RTICLE 76 OF THE U NITED N ATIONS C ONVENTION

4.38. Nicaragua purports to base its extended continental shelf

claim on Article76 of the 1982 Convention. Colombia has

previously pointed out that it is not a party to the Convention

and that Article76 is thus not binding on it as a matter of
conventional law.

4.39. Despite the fact that Colombia is not a party to the 1982

Convention, Nicaragua’s Reply argues that Colombia has

accepted that Article76 is reflective of customary international
law.309 This misrepresents what Colombia said about the

applicable law in its Counter-Memorial. There, Colombia

indicated only that the relevant provisions of the Convention

dealing with baselines and a State’s entitlement to maritime

areas, and specifically the delimitation provisions of Articles 74

and 83, reflected well-established principles of customary
international law.10 Colombia made no mention of extended

continental shelf rights under Article76, and no such rights

were at issue at the time given that Nicaragua had not yet

invented its outer continental shelf claim.

309 NR, para. 2.5.
310 CCM, Part III, Introduction, p. 306, para. 4.

139(3) T HE OUTER LIMITS OF AN EXTENDED CONT INENTAL SHELF
CLAIM MUST BE SUBMITTED TO THE U NITED N ATIONS

C OMMISSION ,NOT THE C OURT ,AND MUST BE BASED ON
THE COMMISSION S RECOMMENDATIONS

4.40. Nicaragua assumes that it has extended continental shelf

rights out to the edge of its margin beyond 200 nautical miles -

indeed, it says that this is a “simple truth” notwithstanding the

fact that its claim trespasses onto areas falling within

200nautical miles of Colombia’s coast (not to mention the
coasts of other States in the region).Actually, the “simple

truth” is that Nicaragua did not even think to mention such

rights in its Application or itMemorial. Moreover, those

purported rights have never been recognized or submitted to the

United Nations Commission, let alone accepted or made subject

to the Commission’s recommendations, despite the fact that
Nicaragua is a party to the 1982 Convention and is bound by

such procedures.

4.41. Article 76(8) of the 1982 Convention provides that:

x Information on the limits of the continental shelf beyond

200 nautical miles from the baseline “shall” be submitted

by the coastal State to the Commission on the Limits of
the Continental Shelf set up under Annex II to the

Convention.

x The Commission “shall” make recommendations to the
coastal State on matters related to the establishment of

such outer limits.

311 NR, para. 2.20.

140 x Limits of the shelf established by the coastal State “on

the basis of” these recommendations shall be final and

binding. 312

4.42. Article76, coupled with the Commission’s Rules of

Procedure, makes it mandatory for a coastal State to make an

extended continental shelf submission to the Commission, for
the Commission to make recommendations on that submission,

and for the coastal State then to e stablish the outer limits of its

shelf “on the basis of” the Commission’s recommendations.

Rule45 stipulates that the coastal State “ shall” submit

particulars of its claims to the Commission. Nicaragua cannot

be deemed to have established any rights to an extended

continental shelf unless and until these steps are followed, and

the Commission will not even examine such claims unless the
relevant parties consent.

4.43. On 7 April 2010, Nicaragua submitted what it called

“Preliminary Information” on its outer continental shelf to the
313
Commission on the Limits of the Continental Shelf.

Curiously, that document was dated August 2009, before the

Nicaragua Reply was filed. But it was not filed with the Reply

and, as noted above, it was only received by the Commission on
7 April 2010.

312 Moreover, Article 76(10) pr ovides that the pr ovisions of Article 76

313 without prejudice to questions of delimitation.
The document may be found at:
http://www.un.org//depts/los/clcs_new/submissions_files/preliminary/nic…
liminaryinformation2010.pdf (last visited 5 June 2010).

1414.44. Nicaragua recognizes that the Preliminary Information it

has sent to the Commission shall not be considered by the

Commission until Nicaragua makes a full submission complying

with the requirements of Article 76 of the 1982 Convention, the

Commission’s Rules of Procedure and its Scientific and
Technical Guidelines. 314 Nicaragua has made no such

submission; in fact, it is not even certain that it will ever do so.

Nicaragua expressly states in its Preliminary Information that it

“intends to consider the further implementation of article 76 for

the area of the southwestern part of the Caribbean Sea which is

the subject of this submission of preliminary information after

the International Court of Justice will have rendered its
judgment on the merits in the case concerning the Territorial and

Maritime Dispute (Nicaragua v. Colombia).” 315

4.45. It follows that Nicaragua, which by its own admission

has not yet made such a submission to the Commission

complying with Article 76, or had it subject to the
Commission’s recommendations, has not established any

entitlement to extended continental shelf rights, let alone to

rights which encroach on Colombia’s 200-mile continental shelf

and EEZ entitlements which exist as a matter of law. That being

the case, Nicaragua cannot merely assume that it possesses such

rights in this case or ask the Court to do the Commission’s job
based on rudimentary and incomplete technical information.

314
315 Preliminary Information of Nicaragua to the CLCS, para. 5.
Preliminary Information of Nicaragua to the CLCS, para. 27.

1424.46. In this connection, it is worth recalling what the Court

had to say about delimitation beyond 200 miles in its Judgment

in the Nicaragua-Honduras case. The relevant passage was
316
cited in Colombia’s Counter-Memorial, but has been ignored

by Nicaragua in its Reply. The fact that Nicaragua was a party
to that case makes Nicaragua’s silence on the matter even more

surprising. To recall the Court’s words:

“It should also be noted in this regard that in no
case may the line be interpreted as extending
more than 200nautical miles from the baselines
from which the breadth of the territorial sea is

measured; any claim of continental shelf rights
beyond 200miles must be in accordance with
Article 76 of UNCLOS and received by the
Commission on the Limits of the Continental
317
Shelf established thereunder”.

4.47. It should also be borne in mind that the Commission will

not consider any extended continental shelf submissions unless
neighbouring States with potential claims in the area consent.

Thus, if a neighbouring State does not give its consent, the

Commission will take no action with the result that a State

(including Nicaragua) will not have established extended

continental shelf limits that are final and binding (recalling that

such limits, in any event, are without prejudice to questions of
delimitation and would not be binding on Colombia in any

event).

316
317 CCM, para. 7.18.
Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
p. 90, para. 319.

143(4) N ICARAGUA HAS NOT PROVED THE LIMITS OF ITS OWN

CONTINENTAL MARGIN AND THE OUTER LIMIT OF
C OLOMBIA ’S MARGIN FROM ITS MAINLAND COAST
IS IRRELEVANT

4.48. Nicaragua’s new continental shelf boundary claim is
based on what it alleges is an equal division of overlapping

geological continental margins.318 This methodology involves a

number of basic fallacies in addition to the other shortcomings

which have been discussed.

4.49. First, Nicaragua’s delimitation line presupposes that

Nicaragua has established the outer limits of an extended
continental shelf beyond 200nautical miles from its baselines.

Legally, as explained above, Nicaragua has no recognized or

accepted extended continental shelf rights in the area. Even the

Nicaraguan Reply concedes that a description of the status of

preparation and intended date of making a full submission to the
319
Commission are still to be provided. Factually, Nicaragua
has not proved its case despite the fact that Nicaragua purports

to base the identification of its continental margin on publicly

available sources. Significantly, none of this information is

annexed to Nicaragua’s Reply and the sources referenced at

paragraph3.37 of the Nicaraguan Reply cannot be readily

accessed and are not, as Nicaragua asserts, “freely and widely

available”. If they were so, why has Nicaragua not furnished
them?

318
319 NR, para. 3.46.
NR, para. 3.38.

1444.50. What Nicaragua does submit with its Reply are three thin

annexes (Annexes 16-18, Vol. II) which would not begin to

satisfy the requirements of a submission made to the United

Nations Commission.

4.51. Annex 16 is a list of 70 co-ordinates purporting to define

the outer limits of Nicaragua’s continental shelf. Absolutely no
information is given to justify the number or choice of these

coordinates and why they were selected to the exclusion of

others.

4.52. Annex 17 contains a similar list of co-ordinates said to

define the outer limits of Colombia’s continental shelf. In

addition to suffering the same lack of explanation as is the case
for the co-ordinates of Nicaragua’s shelf, the table is

meaningless because all of the points listed fall closer than 200

nautical miles to Colombia’s mainland coast or to the coasts of

its islands. Colombia has continental shelf rights extending 200
miles from its coasts ipso facto and ab initio without any

limitation dictated by the purported limits of its physical

continental shelf. To posit a physical limit to Colombia’s
continental shelf extending from its mainland (and Nicaragua

pays no attention to the fact that Colombia’s islands also

generate a continental shelf) is without object.

4.53. Annex 1 to Annex 18 of the Nicaraguan Reply is labelled

“Preliminary Technical Description of the Outer Limits of the

Nicaraguan Continental Shelf”. The information and figures

145provided therein are virtually identical to what Nicaragua has

filed as Preliminary Information with the Commission. Even

taken at face value, the information provided is incapable of

demonstrating any outer continental shelf entitlement, and the

material does not comprise the technical data that Nicaragua
envisages eventually submitting to the United Nations

Commission - hence, the reason for Nicaragua labelling its

annex as “Preliminary Technical Description” only. As

Nicaragua acknowledges in its Preliminary Information, “some

of the data and the profiles described below do not satisfy the

exacting standards required by the CLCS for a full submission,
320
as detailed in the Commission’s Guidelines”.

4.54. The tentative manner in which the data set out in this

Annex is presented is revealing. With respect to Nicaragua’s

choice of five foot-of-the-slope points from which it measures

the outer limits of its outer continental shelf, Annex 1 states:

“Four of these are based on the data derived from
the marine trackline database GEODAS [which

is not provided] and are in principle suitable 321
inclusion in a full submission to the CLCS.”

4.55. Quite apart from the fact that Nicaragua qualifies its

description by noting that four of the points are only “in

principle” suitable, the fifth point is casually dropped from

discussion. The Annex then goes on to state:

320
321 Preliminary Information of Nicaragua to the CLCS, para. 21.
NR, Annex 1 to Annex 18, p. 61. Emphasis added.

146 “there are issues with the data quality in a few

areas [which ones?], especially navigation [what
does this mean?] and the final submission to the
CLCS will evaluate the data quality and present
new data where necessary [no evaluation has

been presented in this case]. The picks presented
in this submission of preliminary information
should be treated as indicative only.” 322

As frankly admitted in Nicaragua’s Preliminary Information,

“Nicaragua intends to acquire additional survey data in order to

complete the information to be submitted to the Commission in
accordance with article 76 of the Convention”. 323 Thisagain

demonstrates that the technical material submitted by Nicaragua

in the present case is incapable of supporting a claim to outer

continental shelf rights.

4.56. Nicaragua’s approach to the issue is truly remarkable. In

effect, Nicaragua is not only asking the Court to substitute itself
for the Commission, it is also requesting the Court to endorse its

outer continental shelf claim based on incomplete, unannexed

and “indicative” materials that would never be acceptable to the

Commission. Nicaragua admits that some of the data is either

of questionable quality or only “in principle” suitable, and no

evaluation of this data is presented at all.

4.57. Second, Nicaragua also gratuitously posits where it says
the outer limit of Colombia’s continental margin lies. 324 This is

322
323 NR, Annex 1 to Annex 18, p. 61.
324 Preliminary Information of Nicaragua to the CLCS, para. 24.
NR, paras. 3.24-3.28.

147a necessary pre-condition for the establishment of Nicaragua’s

delimitation line which is said to be based on an equal division
of the overlapping margins of the Parties. However, any

identification of the limits of Colombia’s continental margin is

completely irrelevant. As can be seen from Figure3-10 to the

Nicaraguan Reply, Nicaragua places the “continental shelf

limits” of Colombia in an area which lies well within
200nautical miles of Colombia’s mainland coast, and which

also takes no account of Colombia’s islands which also generate

200 nautical mile continental shelf and EEZ entitlements in their

own right regardless of the geology and geomorphology.

4.58. As the Court so clearly stated in its Judgment in the

Libya-Malta case, the geological or geophysical characteristics

of the continental shelf within 200nautical miles of a State’s

coast are completely immaterial to issues of entitlement and
325
delimitation. Colombia has a legal entitlement to continental
shelf and EEZ rights extending to 200nautical miles from its

mainland coasts and its islands whatever the geological or

geomorphological characteristics of the area. Consequently,

there is no basis for delimitation in this case to be based on a so-

called equal division of overlapping continental margins.

4.59. Third, Nicaragua even goes so far as to argue that its

outer continental shelf rights should take precedence over

Colombia’s EEZ rights. Nicaragua’s Reply recognizes that its

325 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 35, paras. 39 and 40.

148outer continental shelf claim lies within 200 nautical miles of

Colombia’s coast and that “the final section of the continental

shelf of Nicaragua is subjacent to the exclusive economic zone
326
of Colombia”. However, this does not stop Nicaragua from

arguing that there is no reason why Nicaragua should renounce
her rights to the areas of continental margin of her natural

prolongation which are subjacent to Colombia’s EEZ. In a

passage which is remarkable for its economy of reasoning and

vagueness, Nicaragua then asserts: “A more legally cogent

approach would involve the determination of a single boundary

line of equal division within the areas of overlap of the
respective continental margins.” 327 By this means, Nicaragua

appears to present the astonishing argument that Colombia’s

EEZ should be limited (and delimited) by reference to

geological and geomorphological factors arguably related to

outer continental shelf claims that have nothing to do with a

State’s right to the EEZ or column of water. The argument is

utterly untenable.

(5) E XTENDED CONTINENTAL SHELF CLAIMS DO NOT
TRUMP 200 NAUTICAL MILE ENTITLEMENTS

4.60. For the same reasons, Nicaragua’s unproven claim to an

extended continental shelf does not, and cannot, take precedence
over the existing legal 200nautical mile entitlements of

Colombia measured from its mainland and insular territory.

Colombia has an existing legal entitlement to a continental shelf

326
327 NR, para. 3.47.
NR, para. 3.49.

149and EEZ extending to a distance of 200nautical miles from its

coasts.

4.61. State practice demonstrates that States have been careful
to limit their extended continental shelf claims submitted to the

United Nations Commission to areas that lie beyond

200nautical miles from the nearest territory of another State
precisely because 200 nautical mile entitlements exist as a

matter of law.

4.62. In the northern Pacific Ocean, for example, Japan’s
Submission to the Commission on the Limits of the Continental

Shelf typifies this practice. Japan’s submission covers seven

different regions. The southernmost region (the Southern
Kyushu-Palau ridge Region), in which Japan claims extended

continental shelf rights based on the natural prolongation along

a ridge extending from Oki-no-Tori Shima Island, encompasses

a zone that is limited to areas that lie more than 200 nautical
miles from the nearest territory of the Republic of Palau and of

the Federated States of Micronesia, thus avoiding any trespass

into the 200 nautical mile areas appertaining to those States
(Figure R-4.6).

4.63. Japan has exercised similar restraint with respect to the

other outer continental shelf areas it claims as well. Thus, in
both the Minami-lo To Island region and the Ogasawara region,

Japan’s claim does not cross over into areas lying within 200

nautical miles of territory belonging to the United States.

1504.65. New Zealand has followed the same practice and has

avoided introducing outer continental shelf claims that lie within

200 nautical miles of another State. Thus, in the southern region

claimed by New Zealand, the claim ends at the 200 nautical mile

entitlement of Australia’s Macquarie Island as shown on Figure

R-4.8. In the northern region, New Zealand’s claim avoids

trespassing on the 200 nautical mile entitlements of Fiji and
Tonga. 329

4.66. The practice of Sri Lanka with respect to its outer

continental shelf claim in the Indian Ocean is the same. In its

2009 submission to the Commission on the Limits of the

Continental Shelf, Sri Lanka noted that its extended continental

shelf claim was situated exclusively seaward of the 200 nautical
330
mile limits of neighbouring coastal States. The position is
illustrated in Figure R-4.9 where the outer continental shelf

claim of Sri Lanka clearly does not trespass on the 200 mile

entitlements of other states.

4.67. In the eastern Atlantic Ocean, France, Ireland, Spain and

the United Kingdom have made a joint submission to the

Commission with respect to extended continental shelf rights in

the area of the Bay of Biscay and the Celtic Sea. These claims

329 Available at:
http://www.un.org/Depts/los/clcs_new/submissions_files/nzl06/nzl_exec_su
m.pdf?bcsi_scan_8896DBBFDB1B0269=0&bcsi_scan_filename=nzl_exec_s

330pdf (last visited 5 June 2010).
Available at:
http://www.un.org/depts/los/clcs_new/submissions_files/submission_lka_4…
2009.htm (last visited 5 June 2010).

153Polygon, Mexico reserved the right to make a second

submission at a later date. Significantly, the parameters of the
Eastern Polygon are delineated by the 200 nautical mile legal

entitlements of Mexico, the United States and Cuba

demonstrating Mexico’s intention not to claim outer continental

shelf rights within areas subject to the sovereign rights of other
332
States.

4.69. It is evident that the practice of those States which do

claim extended continental shelf rights runs counter to the

proposition advanced by Nicaragua that there is no priority

when extended continental shelf claims trespass into areas
falling within 200nautical miles of another State. Contrary to

Nicaragua’s new claim, States have taken care to tailor their

extended continental shelf claims so as not to trespass onto areas

lying within 200 nautical miles of another State.

D. Conclusions

4.70. Nicaragua now concedes that what Colombia said in its

Counter-Memorial is correct - namely, that there can be no

single maritime boundary based on a mainland-to-mainland

median line in this case because of distances involved. As for
Nicaragua’s outer continental shelf claim and its request that the

Court only delimit the Parties’ continental shelf, this is an

entirely new claim advanced for the first time in the Reply. The

332 Available at:
http://www.un.org/Depts/los/clcs_new/submissions_files/mex07/part_i_exec
utive_summary.pdf (last visited 5 June 2010).

156claim is fundamentally incompatible with Nicaragua’s previous

request for the delimitation of a single maritime boundary.

Given that the subject-matter of the new claim does not arise out

of the claim advanced in the Application, it is inadmissible.

4.71. The new continental shelf claim also lacks any merit.

Nicaragua has neither demonstrated nor established any
entitlement to outer continental shelf rights, and no such rights

exist in this part of the Caribbean. Moreover, there is no basis

for effecting a continental shelf delimitation based on the

physical characteristics of the shelf when the area claimed by
Nicaragua falls within 200 nautical miles of Colombia’s

mainland and insular territory.

4.72. Having abandoned its previous claim for a single

maritime boundary based on a mainland-to-mainland median

line – a claim which the Colombian Counter-Memorial showed

was unsustainable – Nicaragua is leftwith no positive delimitation
claim once its new outer continental shelf claim is dismissed, as

Colombia submits it must be. Notwithstanding Nicaragua’s

fundamental change of position, the dispute to be decided by the
Court, remains the delimitation of a single maritime boundary.

As will be discussed in the next chapter, that delimitation falls

to be established in the area lying between the San Andrés

Archipelago and the Nicaraguan coast.

157 Chapter 5

THE AREA OF DELIMITATION

5.1. This Chapter addresses the area within which the
delimitation of the single maritime boundary falls to be carried

out.

5.2. Section A first demonstrates that the mainland coast of

Colombia is irrelevant to the delimitation because of its location

more than 400 nautical miles from Nicaragua’s coast beyond the
area of concern. It then goes on to discuss the maritime

entitlements generated by Colombia’s islands forming the San

Andrés Archipelago. Based on the area where the legal

entitlements projecting from the Parties’ truly relevant coasts
meet, Section A shows that the delimitation area lies between

the coasts of the Parties that stand in an opposite relationship to

each other – i.e., the area situated between the westernmost
chain of Colombia’s islands (San Andrés, Providencia, Santa

Catalina, Alburquerque and Quitasueño) and the opposite

Nicaraguan coast. With respect to Nicaragua’s own islands,
Nicaragua has taken a contradictory position in its pleadings, a

point that will also be brought out in this section.

5.3. Section B then turns to the presence of third States and

third State delimitations in the region. These elements

constitute relevant circumstances to be taken into account in

159identifying the delimitation area relevant to the case. As will be
discussed in Chapter 8, they are also relevant in assessing what

neighbouring States have considered an equitable delimitation to

be in situations where their coasts face Colombia’s islands.

A. The Delimitation Concerns the Area Lying between

Nicaragua’s Coast and Colombia’s San Andrés
Archipelago

(1) T HIS IS NOT A CASE OF DELIMITATION BETWEEN
MAINLAND COASTS

5.4. Colombia demonstrated in its Counter-Memorial that its

mainland coast is not a relevant coast for the delimitation of a

single maritime boundary because it lies well over 400nautical

miles from the nearest Nicaraguan territory. Nicaragua now
accepts that point. However, Nicaragua persists in trying to

keep the Colombian mainland coast in play by introducing a

request for a continental shelf delimitation based on an “equal

division” of the natural prolongations of the Colombian and
Nicaraguan mainland coasts. In the words of the Nicaraguan

Reply:

“Nicaragua’s request has been limited in this

Reply to a continental shelf delimitation since
this is the only area where the entitlements of the
Parties emanating from their mainland coasts
meet and overlap and has need of a
delimitation”.333

333 NR, para. 5.1.

1605.5. It is this new claim alone, according to the Nicaraguan
Reply, that renders both of the Parties’ mainland coasts “relevant

coasts”. In other words, the only way for Nicaragua to plead for

the relevance of Colombia’s mainland coast is to assert that the

delimitation must now be based on dividing the natural

prolongations of the Parties, not on the establishment of a single
maritime boundary. The convoluted logic of this proposition is

expressed in the following way:

“In fact, as Nicaragua has shown, the only area in

this case that requires a delimitation is where the
Parties’ continental shelf entitlements overlap, so
the only relevant coasts are the two mainland
coasts.”334

5.6. However, Colombia’s mainland coast is also completely
irrelevant to Nicaragua’s continental shelf claim. This is

because Nicaragua has not demonstrated any legal entitlement to

continental shelf rights situated more than 200nautical miles

from its coast, there are no areas of outer continental shelf in
this part of the Caribbean, and natural prolongation is irrelevant

to Colombia’s 200 nautical mile entitlements measured from its

mainland and its islands. It is unnecessary, therefore, to

consider any issue of natural prolongation from Colombia’s
mainland coast, and that coast still has no role to play in the

present delimitation dispute.

5.7. This basic geographic fact – the lack of relevance of

Colombia’s mainland coast – distinguishes this case from other

334 NR, para. 6.27.

161cases on which Nicaragua relies in an attempt to enclave
Colombia’s islands in what Nicaragua calls its own continental

shelf.

5.8. For example, the Nicaraguan Reply argues that the

present case is similar to the delimitation concerning the
Channel Islands in the Anglo-French Arbitration where the

islands were enclaved. 335 As can readily be shown, however,

the two situations are not at all analogous.

5.9. The delimitation between France and the United

Kingdom in the English Channel involved primarily a

delimitation between broadly equivalent mainland coasts which

lay between 18 and 100 miles apart. The result was a mainland-
to-mainland equidistance boundary except for the treatment of

the Channel Islands. In the present case, the maritime boundary

does not fall to be delimited betwee n the mainland coasts of the

Parties given that those coasts are too far apart, but rather

between the islands comprising Colombia’s San Andrés
Archipelago and Nicaragua’s opposite coast.

5.10. It is evident that the position and location of the San

Andrés Archipelago is in no way comparable to that of the
Channel Islands. The latter were a relatively compact group

situated on the “wrong” side of the mainland-to-mainland

median line boundary just a few miles off the French mainland

coast. In fact, the distance between the Channel Islands and the

335 NR, paras. 5.18-5.25.

162French mainland coast was so restricted that it involved the

delimitation of the territorial sea between them for which the

Court of Arbitration had no jurisdiction. Moreover, the Channel

Islands were immediately surrounded on three sides by French
mainland territory. The Channel Islands were thus enclaved as

special or relevant circumstances that were unique to the

particular geographic situation.

5.11. The San Andrés Archipelago, on the other hand, is

located over 100 nautical miles from the mainland coast of

Nicaragua even at its nearest point, and the Archipelago also lies
opposite to a series of Nicaraguan islands. Unlike the Channel

Islands, Colombia’s islands are not situated in close proximity

to the Nicaraguan mainland. Indeed, they would have to be
closer to the Nicaraguan coast than Nicaragua’s own islands,

such as the Islas Mangles (Corn Islands), even to begin to

resemble the geographic relationship between the Channel

Islands and the French coast. Nor are they surrounded on three
sides by Nicaraguan mainland territory. And they are not

located on the “wrong” side of any mainland-to-mainland

median line because such a line does not exist in this case due to
the irrelevance of Colombia’s mainland coast.

5.12. It was the fact that the Channel Islands lay on the

“wrong” side of the median line that was the main reason for
enclaving the islands in the Anglo-French Arbitration. As the

Court of Arbitration observed, if the Channel Islands were

permitted to divert the course of the mid-Channel median line, a

163distortion of the boundary would result which would be creative
336
of inequity. This element does not exist in this case due to

the absence of any mainland-to-mainland median line, and

because Colombia’s string of islands stand on their own right
with their own legal entitlements. As the Court of Arbitration

emphasized, the case it was presented with -

“is quite different from that of small islands on
the right side of or close to the median line, and it
is also quite different from the case where

numerous islands stretch out one after337other
long distances from the mainland. ”

5.13. It is not surprising, therefore, that the Nicaraguan Reply

is obliged to concede that, “in certain respects the situations are
338
not exactly comparable.” What is puzzling, on the other
hand, is that just three paragraphs later in its Reply, Nicaragua

contradicts itself by asserting that “the situation of the three

islands [San Andrés, Providencia and Santa Catalina] in the

present case is entirely similar.” 339 As has been shown, it is not.

5.14. Nicaragua also cites the 1971 Italy-Tunisia Agreement as

an example of State practice where islands have been enclaved

(actually only partially enclaved). In its customarily ambitious

way, Nicaragua asserts that this situation is also “remarkably

similar” to the delimitation it proposes between itself and

336 Case concerning the Delimitation of Continental Shelf between the
United Kingdom of Great Britain and No rthern Ireland, and the French
Republic, Decision of 20 June 1977, 18 RIAA 94, para. 199.
337 Ibid.
338 NR, para. 5.18.
339 NR, para. 5.21.

164Colombia, a proposition that cannot even remotely be

sustained. 340

5.15. Once again, the dominant feature of the Italy-Tunisia

agreement was that the delimitation was based on a median line

boundary between the coasts of Sicily and Tunisia including the
341
small islands lying just off those coasts. The coasts of
Tunisia and Sicily are only about 75 miles apart. The four

Italian islands that were partially enclaved actually straddled the

median line - hence the reason why they were partially enclaved

with no Tunisian maritime areas extending beyond them.

5.16. In contrast, there is no mainland-to-mainland median

line in this case. Even Nicaragua has abandoned its previous

argument that such a line is relevant given that it now admits
that its single maritime boundary claim is untenable, and

Nicaragua’s new “division of natural prolongations” theory also

does not depend on any mainland-to-mainland median line.

5.17. Nicaragua also neglects to draw attention to the northern

two-thirds of the delimitation agreed between Italy and Tunisia.

There, the delimitation was an equidistance boundary between

small islands lying on both sides of the line. If anything,
therefore, this aspect of the Italy-Tunisia example supports

Colombia’s case which is also based on an equidistance line

340 NR, para. 6.116.
341
This is evident from Article I of the Agreement which states that the
boundary “shall be the median line” with the exception of four small Italian
islands which straddle that line. J. Ch arney and L. Al exander, eds.,
International Maritime Boundaries, Vol. II, p. 1621.

165drawn between its own islands and the islands belonging to

Nicaragua on the other side.

5.18. The plain fact is that Colombia’s islands do not straddle,

or lie on the “wrong side” of, any median line. Rather, the

islands stand on their own right with all the maritime

entitlements that international law accords to coastal territory
projected out to a distance of 200 nautical miles.

5.19. Nicaragua’s Reply purports to find it strange that

Colombia’s mainland coast has gone missing. Nicaragua

hypothesizes that this may be the first instance of a Party
seeking to ignore its coast.342

5.20. Colombia has fully explained the reasons why its

mainland coast has no role to play in the present delimitation

and why Nicaragua’s attempts to inject that coast into the
equation are erroneous and contrived. This does not mean that

Colombia is in any way reticent about its mainland coast. To

the contrary, that coast was treated a relevant coast in

Colombia’s maritime boundary agreements with Panama,

Jamaica, the Dominican Republic and Haiti. But the Colombian
mainland coast is not a relevant coast vis-à-vis Nicaragua, and

that is why it is not discussed by Colombia.

342 NR, para. 2.17.

1665.21. Curiously, Nicaragua now asserts that it is Colombia that
343
is seeking only an exclusive economic zone delimitation.
This is wrong on two counts. First, Colombia has presented its

case for the delimitation of a single maritime boundary, not

simply the delimitation of the Parties’ exclusive economic

zones. Second, a single maritime boundary is precisely what

Nicaragua itself was requesting in its Application and in its
Memorial, and even in its written submissions during the

preliminary objections stage of the case.

5.22. Given that Nicaragua has abandoned its mainland-to-

mainland single maritime boundary claim, and has failed to
establish any outer continental shelf entitlements by which it

seeks to put Colombia’s mainland coast into play, the

conclusion must be that Colombia’s mainland coast remains

irrelevant to the present delimitation because of its distance

from the Nicaraguan coast.

5.23. The relevant coasts of Colombia for purposes of this case

are those associated with its islands comprising the San Andrés

Archipelago. As the next section will show, those islands

generate maritime entitlements of their own, and (as Chapter 6
will demonstrate) they also provide relevant basepoints for

plotting the delimitation line vis-à-vis the opposite Nicaraguan

coast.

343 NR, para. 6.45.

167 (2) C OLOMBIA ’S ISLANDS GENERATE THEIR OWN
MARITIME ENTITLEMENTS

5.24. Under international law, Colom bia’s islands generate
maritime rights and entitlements extending out to a distance of

200nautical miles from their baselines in exactly the same

manner as other land territory. This is made clear by Article

121(2) of the 1982 Convention which provides that:

“Except as provided for in paragraph 3, the
territorial sea, the contiguous zone, the exclusive
economic zone and the continental shelf of an

island are determined in accordance with the
provisions of this Convention applicable to other
land territory.”

5.25. Nicaragua admits that the islands of San Andrés,

Providencia and Santa Catalina are full-fledged islands that are

entitled to generate continental shelf and exclusive economic
344
zone rights of their own. This cannot be questioned. All

three islands are populated and the islands host important
political, economic and social institutions. The photographs of

San Andrés, including its principal city, Providencia and Santa

Catalina, reproduced at Figures R-5.1d and 5.1e hereto, speak

for themselves. Clearly, islands such as these are entitled to the

full suite of maritime entitlements recognized by international
law.

5.26. With respect to the other islands comprising the

Archipelago, however, Nicaragua asserts that they are “rocks”

344 NR, para. 5.3.

168under Article 121(3) of the 1982 Convention with no human
habitation or economic life of their own. 345 This is no more than

a bald assertion with no facts to back it up. At several places in

the Nicaraguan Reply, it is asserted that Chapter IV of the Reply

shows that “there can be no doubt that the cays located on

Roncador and Bajo Nuevo as well as the other small features

claimed by Colombia in the area are at most rocks in the sense
346
of Article 121(3) of the 1982 Law of the Sea Convention”.

But if one turns to Chapter IV of the Reply, no such showing is

made. All that chapter addresses is Serranilla, Bajo Nuevo and
347
Quitasueño. Nothing at all is said with respect to
Alburquerque, Serrana, Roncador or the East-Southeast Cays.

5.27. A mere glance at the photographs that Colombia

included in its Counter-Memorial shows unequivocally that the

islands not dealt with in Nicaragua’s Reply - Alburquerque,

Serrana, Roncador, and the East-Southeast Cays - cannot

possibly be considered to be mere “rocks”.

5.28. The Alburquerque Cays are heavily vegetated with
coconut trees, rubber trees and bushes as can be seen on Figure

R-5.1a. There is a well-presented coral formation around them

along with a colourful and varied presence of sea species. The

islands are home to an active tourist presence, there is a

345 NR, para. 5.3.
346 NR, para. 5.17; and see also para. 6.29.
347 NR, paras. 4.9-4.14 for Serranilla and Bajo Nuevo, and paras. 4.25 -
4.43 for Quitasueño.

171Colombian Marine detachment located the re as well as weather
and radio stations. 348

5.29. Serrana is a longer atoll as the photograph attached in

Figure R-5.1a also shows. The island is full of vegetation.

Fresh water is present, a variety of installations manned by

Colombian personnel are stationed there, and the islands are

frequented by fishermen. The islands also have a historical

economic importance given that guano was exported from them.

All of this was described in the Colombian Counter-
349
Memorial. None of it is addressed by Nicaragua. Again, a
glance at the photograph is sufficient to show that Serrana

cannot possibly be characterized as a “rock”.

5.30. The same can be said about Roncador. Once again, as

the photograph of the island included on Figure R-5.1b reveals,

the island is vegetated, and there are facilities on it including a

lighthouse, solar panels, communication installations and a

heliport, along with a detachment of the Colombian Marine

Infantry. The island is also used by small industrial fishing
vessels.350 It is not a “rock” and Nicaragua has not shown

otherwise.

5.31. The East-Southeast Cays are also not rocks as the

photographs of them clearly reveal. Coconut trees and other

foliage is present on the islands, fishermen for whom there are

348 CCM, paras. 2.15-2.17.
349 CCM, paras. 2.22-2.24 and Annex 120.
350 CCM, para. 2.21.

173shelters use them, there is a well for fresh water, the Colombian

Marine Infantry is present, and there is a weather station,
351
lighthouse and radio station.

5.32. The same can be said about Serranilla and Bajo Nuevo.

The largest of the Serranilla Cays (Beacon Cay) has trees and

vegetation as shown on the photographs included in Figure R-
352
5.1c. There is a lighthouse operated by Colombian personnel,
a detachment of the Colombian Marine Infantry which controls

fishing and illicit drug-trafficking activities in the area stationed

there, weather and radio stations and landing facilities for small

aircraft.353

5.33. Bajo Nuevo consists of three cays on one of which is

situated a light structure operated by the Colombian Navy. This

can be seen on the photograph included on Figure 2.10 to

Colombia’s Counter-Memorial reproduced in Figure R-5.1c. In

addition, Serranilla and Bajo Nuevo are both frequented by
354
Jamaican fishermen who have been and continue to be

allowed to fish in their waters under permits issued by Colombia

and pursuant to Colombian fishing regulations.

5.34. Each of these islands generates territorial sea, contiguous

zone, continental shelf and column of water entitlements based

on the distance formula projected in a 360° direction. The
351
CCM, Figure 2.5 and paras. 2.18-2.20.
352 See also, CCM, Figure 2.9
353 CCM, para. 2.30.
354 CCM, para. 2.31 and CCM, paras. 4. 169-4.185 including Annexes
63 and 64.

175Nicaraguan Reply attempts to critic ize Colombia’s nautical
355
charts relating to some of these islands. These criticisms are

unwarranted as the technical explanation contained in Appendix
356
2 demonstrates.

5.35. With respect to Quitasueño, Colombia’s Counter-

Memorial contained a Navy Report demonstrating that there

were several features within the Quitasueño bank which qualify

as islands because they are above water at high tide. Apart from

these features, Quitasueño as a whole is a substantial feature

covering a large area, with numerous low-tide elevations and a

fringing reef on the east, which can be used as part of

Quitasueño’s baselines. Quitasueño has been, and continues to

be, an active fishing area of considerable economic importance
357
regulated by Colombia. There is a 1983 Fishing Agreement

and subsequent conservation measures agreed between
Colombia and the United States relating to the Quitasueño

area.358

5.36. As discussed in Chapter 3, Colombia is furnishing with

this Rejoinder an expert report prepared by a former senior

official with the Office of the Geographer of the State

Department of the United States, Dr Robert W Smith. That

report demonstrates that there are as many as 34 individual

features within the bank that qualify as islands. The Smith

355 NR, paras. 4.10-4.13.
356 Appendix 2: Colombia’s Official Nautical Charting of the San
Andrés Archipelago.
357 CCM, paras 2.25-2.29.
358 CCM, paras. 4.62-4.77.

177report also shows that there are at least 20 low-tide elevations

situated on Quitasueño well within 12 nautical miles of the
359
island features that are above water at high tide. Moreover,

the islands within Quitasueño possess a fringing reef which, as

reflected in Article6 of the Law of the Sea Convention, is able
to constitute the baseline of Quitasueño from which its maritime

entitlements are measured. As Figure R-5.2 shows, when the

actual baseline of Quitasueño is taken into account, Quitasueño

is actually a substantial feature. The area situated within

Quitasueño’s baselines is some 83 km².

5.37. Figure R-5.3 illustrates the 200 nautical mile maritime
entitlements generated by the radial projection of Colombia’s

islands in accordance with the distance principle without

prejudice to the question of delimitation. These islands are

entitled to the maritime areas that appertain to them in

conformity with general international law.

5.38. While Nicaragua pays lip service to the principle that

islands possess maritime entitlements in their own right, 360its

recognition of this reality is entirely ephemeral. Nicaragua’s

appreciation of the legal and geographic context in which the

need for delimitation arises is tainted by a self-centered view

that only its mainland coast and islands generate continental
shelf entitlements and that Colombia’s islands should be

359
Appendix 1: Expert Report by Dr. Robert Smith “Mapping the
Islands of Quitasueño (Colombia) – Their Baselines, Territorial Sea, and
360tiguous Zone”.
NR, para. 5.12.

178virtually ignored by means of according them no more than
three- and twelve-mile enclaves within Nicaragua’s continental

shelf.

5.39. Examples of this approach are littered throughout the

Nicaraguan Reply. Thus, one finds statements such as the

following which place the myopic nature of Nicaragua’s

position in sharp focus.

“The islands of San Andrés and Providencia are

not only sited on the natural prolongation of the
mainland territory of Nicaragua that reaches
beyond 300 nautical miles in this area, but are
also well within her 200-nautical-mile exclusive

economic zon361ased on the distance
principle.”

And again:

“As shown in (Figures 1.2, 3.2 and 3.7) the
various island features form part of the natural
prolongation of Nicaragua.” 362

And still again:

“The islands and other maritime features claimed

by Colombia are located on the continental shelf
of Nicaragua and approximately 200 nautical
miles distant from the area where the continental
shelf of Colombia terminates.” 363

361 NR, para. 5.4.
362 NR, para. 3.63. Elsewhere, Nicaragua asserts that it is only the
“natural prolongation of the main land territory of bo th Parties” that meets
and overlaps giving rise to the need for delimitation. NR, para. 3.2.
363 NR, para. 5.27.

1815.40. This line of argument is based on the fundamental

misconception that Colombia’s islands somehow fall, like

unwelcome intruders, exclusively on Nicaragua’s continental

shelf or within its EEZ. It also ignores the fact that the distance
principle applies equally to Colombia’s islands. Thus, the

reality of the situation is very different from what Nicaragua

seeks to portray. Colombia’s islands have their own legal
entitlements to continental shelf and column of water rights just

as any other land territory. This is recognized by Article 121(2)

of the 1982 Convention and customary international law. But

for the presence of Nicaragua’s is lands and its mainland coast,
Colombia’s islands would actually generate even larger

maritime spaces to the west out to a distance of 200 nautical

miles. It is thus no more accurate to say that Colombia’s islands
are situated on Nicaragua’s continental shelf and within its EEZ

than to say that Nicaragua’s island s and part of its mainland

territory are situated on the continental shelf and within the EEZ

of Colombia.

5.41. In arriving at an equitable delimitation, it is axiomatic

that geography must not be refashioned. This precept has
formed a cornerstone of the Court’s jurisprudence ever since the

North Sea cases were decided. There, the Court articulated the

following basic principle:

“Equity does not necessarily imply equality.
There can never be any question of completely
refashioning nature, and equity does not require

that a State without access to the sea should be
allotted an area of continental shelf, any more

182 than there could be a question of rendering the
situation of a State with an extensive coastline
similar to that of a State with a restricted
coastline. Equality is to be reckoned within the

same plane, and it is not such natural 364qualities
as these that equity could remedy.”

5.42. The same point was made by the Court in its Judgment
in the Libya-Malta case where the Court referred to:

“The principle that there is to be no refashioning
geography, or compensating for the inequalities
of nature.” 365

5.43. Political and natural geography are what they are, and

the existence of particular geographic configurations in an area

to be delimited is neither equitable nor inequitable. As the

Chamber in the Gulf of Maine case recalled:

“The facts of geography are not the product of

human action amenable to positive or negative
judgment, but the result of natural phenomena, so
that they can only be taken as they are.” 366

5.44. By its very nature, de limitation between States with

opposite coasts situated less than 400 nautical miles apart, as is

the case between Colombia’s islands and Nicaragua’s relevant
coast, entails some degree of curtailment of the legal

entitlements that each State would otherwise enjoy if the other

364 North Sea Continental Shelf Cases, Judgment, I.C.J. Reports 1969,
pp. 49-50, para. 91.
365 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 39, para. 46.
366 Delimitation of the Maritime Boundary in the Gulf of Maine Area,
Judgment, I.C.J. Reports 1984, p. 271, para. 37.

183State did not exist. This is due to the actual geographic facts of

the area to be delimited. What the Arbitration Tribunal said in
the Guinea-Guinea Bissau Maritime Delimitation case with

respect to States with adjacent coasts applies equally to States

with opposite coasts; namely that:

“Whatever method of delimitation is chosen, the

likelihood is that both will lose certain maritime
areas which are unquestionably situated opposite
and in the vicinity of their coasts. This is the cut-
off effect.”67

(3) T HE RELEVANT DELIMITATION AREA IS THE AREA BETWEEN
THE P ARTIES ’RELEVANT COASTS

5.45. In the present case, given the irrelevance of Colombia’s

mainland coast, the geographic facts dictate that the delimitation

falls to be established between the string of Colombian islands

which make up the San Andrés Archipelago, on the one hand,
and the coast of Nicaragua facing the Archipelago, on the other.

In particular, the islands of San Andrés, Providencia, Santa

Catalina, Alburquerque and Quitasueño lie directly opposite

Nicaragua’s own islands and thus must be taken into account.

The maritime projections from both Parties’ coasts necessarily
meet and begin to overlap in the area lying between the

westernmost islands of the Archipelago and Nicaragua’s coast.

This is the relevant area for delimitation purposes in this case. It

is illustrated on Figure R-5.4.

367 Guinea-Guinea Bissau Maritime Delimitation, 77 I.L.R. 636, at p.
681, para. 103.

1845.46. Figure 6-8 to Nicaragua’s Reply presents a distorted

depiction of the relevant area described by Colombia by limiting

that area to a zone lying between Colombia’s westernmost

islands and Nicaragua’s islands. This is not what Figure R-5.4
shows, which is a reproduction of a figure previously produced

in Colombia’s Counter-Memorial (Figure 8.1). Nicaragua fails

to appreciate that the relevant area is not dependent solely on the
basepoints on the islands that dictate the course of the

provisional equidistance line. Rather, the relevant area is the

maritime area between Colombia’s westernmost islands and

Nicaragua’s coast. As noted above, the eastward projection of
Nicaragua’s coasts and the western projection of the coasts of

Colombia’s islands meet within this area.

5.47. On the other hand, as can be seen from Figure 3-1 to

Nicaragua’s Memorial, Nicaragua also posits a much more

ambitious relevant area that extends far to the east of

Colombia’s islands and stretches right up to the mainland coasts
of Colombia and Panama. Even Nicaragua’s rebuttal position,

which is based on a hypothetical EEZ entitlement extending 200

nautical miles from its own islands, is portrayed in such a
manner as to swallow up Colombia’s islands (with the exception

of Bajo Nuevo) and cut in front of the mainland coasts of Costa

Rica and Panama. This can be seen very clearly on Figure 4-5

to the Nicaraguan Reply.

1865.48. However, the maritime areas lying east of the Islands of

San Andrés, Providencia, Santa Catalina, Alburquerque and

Quitasueño have nothing to do with Nicaragua.

5.49. Figure R-5.5, shows that this central part of the western

Caribbean Sea is bordered by the San Andrés Archipelago on

the north, northwest and west, by Panama (and, to a lesser

extent, Costa Rica) on the south, and by the Colombian

mainland coast to the east. Nicaragua has no coast directly
abutting this area, and has never displayed any presence in it.

Nicaragua cannot even produce its own nautical charts of the

area or the islands situated therein. Moreover, it was only in

1967, almost 40 years after the 1928/1930 Treaty was

concluded, that Nicaragua began to show any interest in

licensing petroleum activities. However, a ll of these activities
were situated on or near the 82°W meridian and in the vicinity

of Quitasueño and all were protested by Colombia. 368 They

never extended into areas lying south or east of the Archipelago

which Nicaragua now claims.

5.50. Colombia has a delimited boundary with Panama in the

southern reaches of this area which can be seen on Figure R-

5.5. Significantly, Nicaragua never protested this agreement –
369
further evidence of its lack of interest in the area. Allofthe

maritime areas within this central sea region lie much closer to

the territory of Colombia than they do to Nicaragua. In fact, all

368 CCM, Annexes 54-59.
369 See CCM, para. 8.40.

187of the maritime areas lying east of San Andrés, Providencia and

Santa Catalina, and south of the 13°N parallel of latitude (which

passes between San Andrés Island and Providencia) lie closer to

Panama and, for the most part, to Costa Rica than they do to
Nicaragua. Nicaragua’s “relevant area” clearly trespasses on

areas where it has no coastal presence, but where the rights and

interests not simply of Colombia, but also of third States, are
directly involved. This point has been brought home by Costa

Rica’s Application to Intervene.

5.51. This is an additional reason why the relevant area to be
delimited between Colombia and Nicaragua only concerns the

area falling between the westernmost islands of the San Andrés

Archipelago and the opposite Nicaraguan coasts. It is in this
area that the maritime projections of the coasts of the Parties

meet without trespassing on the actual or potential rights of third

States. Reduced to its essentials, the present case is a case of

delimitation between opposite coasts which face each other
across this area.

(4) N ICARAGUA ’S INCONSISTENT POSITION WITH RESPECT
TO ITS OWN ISLANDS

5.52. Turning to Nicaragua’s own islands lying within the

relevant area, Nicaragua’s pleadings have adopted a strikingly
inconsistent position. Nicaragua’s Memorial contained almost

no information regarding its coastal geography including the

characteristics of its islands. The position expressed in

Nicaragua’s Memorial was that the boundary should be

189delimited on the basis of a mainland-to-mainland equidistance

line with Nicaragua’s islands having no role to play or providing
any basepoints for that line. In short, Nicaragua conceded its

islands to be irrelevant.

5.53. Even Nicaragua’s new extended continental shelf claim

takes no account of its islands. As previously noted, that claim
is based on a division of allegedly overlapping continental

margins.

5.54. Elsewhere in the Reply, however, Nicaragua suddenly
discovers its islands. Thus, Chapter IV of the Reply contains a

section (Section III) labelled “Nicaragua’s Undisputed Islands

and Maritime Features”. There, the argument is made that the

Islas Mangles (Corn Islands) and Miskito Cays are an integral

part of the Nicaraguan mainland coast and that, in all other
respects, they are comparable to the Islands of San Andrés and

Providencia. 370

5.55. Nicaragua’s islands are not an integral part of its
mainland coast: indeed, Nicaragua itself ignored them for

purposes of its original mainland-to-mainland median line

claim, and it continues to ignore them for purposes of its

continental shelf claim. Nicaragua acknowledges that the more
important of these islands - the Islas Mangles (Corn Islands) -

are located some 26 nautical miles from the mainland coast,

370 NR, para. 4.24.

190which means that the territor ial seas of the islands and the
371
mainland do not even overlap.

5.56. The population of the Islas Mangles (Corn Islands) is

estimated by Nicaragua to be in the range of 7,400. No statistics

are given for the Miskito Cays. This pales in comparison to the

population of Colombia’s islands which totals some 70,000
372
inhabitants.

5.57. As noted above, this does not prevent Nicaragua from
advancing an equally untenable position pursuant to which

Nicaragua contends that, if its continental shelf claim is not

accepted, Colombia’s islands should be enclaved within

Nicaragua’s hypothetical 200-nautical mile exclusive economic

zone. 373 As illustrated on Figure 4-5 to Nicaragua’s Reply, this

“Potential EEZ Entitlement” is actually measured from

Nicaragua’s islands. Thus, Nicaragua has no hesitation in

according its islands a full 200nautical mile reach for purposes

of its rebuttal position, but it ignores the fact that Colombia’s

much more important islands are entitled to the same maritime

rights.

371 NR, para. 4.17.
372 NR, para. 4.17; CCM, para. 2.1.
373 NR, para. 6.3.

191 B. The Position of Third States

(1) T HE NEED TO TAKE INTO ACCOUNT THE PRESENCE OF

THIRD S TATES

5.58. The Court has always been sensitive to the actual or

potential rights of third States bordering the area to be delimited.

This is particularly the case in semi-enclosed seas where third
States are almost inevitably present, as is the case here. In

deciding delimitation disputes, the Court has thus been careful

not to trespass onto areas within which third States have

potential rights, and such areas have been excluded from the

area to be delimited.

5.59. In the Tunisia-Libya case, for example, the Court

refrained from identifying the end-point of the delimitation to

avoid any prejudice to third States. As the Court held:

“The extension of this line northeastwards is a
matter falling outside the jurisdiction of the Court
in the present case, as it will depend on the
delimitation to be agreed with third States.”74

Similarly, in the Libya-Malta case, the Court also avoided

prolonging the delimitation line into areas claimed by a third

State (Italy). While not pronouncing itself on the validity of
Italy’s claims, the Court observed:

“The present decision must, as then
foreshadowed, be limited in geographical scope

374 Continental Shelf (Tunisia/Libyan Arab Ja mahiriya), Judgment,
I.C.J. Reports 1982, p. 94, para. 133(C)(3).

192 so as to leave the claims of Italy unaffected, that
is to say that the decision of the Court must be
confined to the area in which, as the Court has
been informed by Italy, that State has no claims
375
to continental shelf rights.”

5.60. In the Cameroon-Nigeria case, the Court exercised

similar caution. After noting that “in particular in the case of

maritime delimitation where the maritime areas of several States

are involved, the protection afforded by Article 59 of the Statute
376
may not always be sufficient”, the Court added:

“It follows that, in fixing the maritime boundary

between Cameroon and Nigeria, the Court must
ensure that it does not adopt any position which
might affect the rights of Equatorial Guinea and
Sao Tome and Principe.” 377

5.61. More recently, in the Romania-Ukraine case, the Court

was also careful not to extend either the relevant area or the

delimitation line into areas where third States had claims. After

indicating that “the relevant area may include certain maritime

spaces and exclude others which are not germane to the case in

hand, “ the Court stated:

“The Court notes that the delimitation will occur
within the enclosed Black Sea, with Romania

being both adjacent to, and opposite Ukraine, and
with Bulgaria and Turkey lying to the south. It

375 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 26, para. 21.
376 Ibid.
377 Land and Maritime Boundary between Cameroon and Nigeria
(Cameroon v. Nigeria: Equatorial Guine a intervening), Judgment, I.C.J.
Reports 2002, p. 421, para. 238.

193 will stay north of any areas where third party
378
interests could become involved.”

5.62. There are compelling reasons in this case for the Court to

take similar account of the presence of third States in the region

in determining the delimitation area, and to exercise comparable

restraint. The area to be delimited between Colombia’s islands

and Nicaragua does not exist in a vacuum. To the south, Costa

Rica and Panama front this part of the Caribbean; in the north,

Jamaica and Honduras have interests.

(2) T HE PRESENCE OF THIRD S TATES AND EXISTING
DELIMITATION AGREEMENTS BEARING ON THE

IDENTIFICATION OF THE DELIMITATION AREA

5.63. Colombia’s Counter-Memorial set out in detail the

existing delimitation agreements which have an impact on, and

must be borne in mind in identifying, the area to be delimited
379
between Colombia and Nicaragua. The boundaries resulting

from these agreements are shown on Figure R-5.5 above.

5.64. For its part, Nicaragua’s Memorial acknowledged that:

“The only consistent principle to emerge from
the case law is the principle that the Court lacks
competence to make determinations which may
affect the claims of third States”.

Nicaragua then added:

378
Case concerning Maritime Delimitation in the Black Sea (Romania
379Ukraine), Judgment of 3 February 2009, p. 36, para. 112.
CCM, paras. 8.33-8.56.

194 “It must be obvious that such an inhibition does
not involve a recognition by the Court of the
legal validity of the third State claims.”380

5.65. Regrettably, Nicaragua has failed to heed this principle.

Nicaragua’s Memorial advanced a delimitation area that
encroached not only onto areas that could be of potential interest

to Costa Rica, Jamaica and even Honduras to the north and west

beyond the territorial sea of Serranilla Cay, it also extended the

delimitation area right up to Panama’s coast.

5.66. As for the Nicaragua Reply, it totally ignores the

presence of third States and of actual or potential third State

entitlements that are relevant to identifying the area to be

delimited. Nicaragua proceeds on the assumption that the
present delimitation is to take place in geographic isolation with

no account being taken of third States in the region.

5.67. Nicaragua’s disregard for the maritime rights of
neighbouring States is illustrated by Figure3-1 to its Reply,

which is labelled “The Delimitation Area according to

Nicaragua”. Once again, that figure shows that Nicaragua views

the relevant area as extending right up to the coast of Panama in

the east, within a relatively short distance (much closer than
200nautical miles) of the coasts of Panama and Costa Rica in

the south, and into areas in the vicinity of Serranilla and Bajo

Nuevo in the north in which Jamaica has legal entitlements

pursuant to a joint regime agreed with Colombia and where

380 NM, para. 3.92.

195Honduras also has interests pursuant to its 1986 Treaty with

Colombia.

5.68. Even if the delimitation agreements concluded between

Colombia and third States are not binding on Nicaragua per se,

neither do those agreements confer any rights on Nicaragua. As
the Application to Intervene submitted by Costa Rica illustrates,

such third States have potential maritime entitlements in the

same general area extending, as against Colombia, out to the

limits of their bilateral arrangements or, as against Nicaragua,
extending out to a distance of 200nautical miles from their

coasts.

5.69. The Court should avoid delimiting any areas between

Colombia and Nicaragua that potentially prejudice or trespass

onto these rights. Colombia has taken this factor into account as
a relevant circumstance in putting forward what it views as the

appropriate delimitation area – an area that lies between the

relevant, opposite coasts of the Parties where third States are not

present – and in claiming an equidistance-based boundary the
end points of which are specifically left open subject to third

States’ interests and claims. Nicaragua has not.

196 Chapter 6

APPLICATION OF THE PRINCIPLES AND RULES
OF DELIMITATION: ESTABLISHING THE
PROVISIONAL EQUIDISTANCE LINE AS THE

FIRST STEP IN THE DELIMITATION

A. Introduction

6.1. Maritime delimitation is a legal process involving the

application of what are now well-settled principles and rules of

law. As the Court noted in the Libya-Malta case:

“The justice of which equity is an emanation, is
not abstract justice but justice according to the

rule of law; which is to say that its application
should display consistency and a degree of
predictability; even though it looks with
particularity to the peculiar circumstances of an
instant case, it also looks beyond it to principles
of more general application.”81

6.2. One of the major contributions to the law of maritime

delimitation has been the articulation by the Court of the precept
that the “equidistance/special circumstances” rule applicable to

territorial sea delimitation is virtually synonymous with the

“equitable principles/relevant circumstances” rule that the Court
had earlier identified as applying to the delimitation of the

continental shelf and the column of water.

367 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 39, para. 45.

1976.3. While each case must be assessed on its own facts,

consistency and predictability have been considerably enhanced
by the evolution of a consistent line of jurisprudence emanating

from the Court, and from arbitral tribunals, holding that

maritime delimitation involves essentially a two-step process.

x First, it is necessary to calculate a provisional

equidistance line plotted from the appropriate basepoints

on the coasts of the respective parties.

x Second, the relevant circumstances characterizing the

delimitation area are then assessed in order to determine

whether they justify the adjustment of the provisional

equidistance line in order to produce an equitable result.

6.4. The delimitation methodology set out in Colombia’s

Counter-Memorial respects these principles. Colombia plotted

the provisional equidistance line between the relevant coasts of

the Parties using the nearest basepoints on the Parties’
respective coasts that face each other, and then examined

whether there were any circumstances warranting a modification

of that line.82

6.5. Nicaragua’s Memorial appeared to accept the same basic
methodology, although it advanced a wholly irrelevant

mainland-to-mainland median line as the first step in arriving at

382
CCM, Chapter 9.

198its single maritime boundary claim. Nonetheless, as a matter of

principle, the Nicaraguan Memorial recognized that:

“According to the jurisprudence of the Court,
such an equidistance line is to be considered

provisional in the sense that it is subject to a
process of adjustment resulting from any relevant
circumstances.” 383

6.6. Nicaragua’s whole approach, as well as its appreciation
of the law, has changed with the filing of its Reply. This is due

to the introduction of a brand new continental shelf claim based

on the geology and geomorphological of the continental margin

rather than on the relevant geographical context. The

Nicaraguan Reply thus states that:

“The position of Nicaragua, as explained in
Chapter III above, is that in a delimitation of the

continental shelf, such as has been requested by
Nicaragua, where the distance principle is not
involved but only the natural prolongation of the
land territory, the question of a provisional
equidistance line has no role to play.” 384

6.7. This position is far removed from the law of maritime

delimitation and runs counter to the rules that now exist

governing how the delimitation process should operate. There
is no reason, nor any need, for the Court to depart from its well-

developed practice with regard to delimitation in this case.

Nicaragua’ case is like a throw-back in time to much earlier

383
384 NM, para. 3.51.
NR, para. 6.49 (emphasis added).

199cases in which the Parties argued geology and geomorphology

at length to no avail. It has no place in the present case.

B. Equidistance as the First Step

6.8. In its Counter-Memorial, Colombia rehearsed the large

body of jurisprudence that exists supporting the principle that

maritime delimitation involves the two-step process mentioned

above. Colombia pointed out that as early as the North Sea

cases, the Court recognized that there was much less difficulty
in applying a median line boundary between opposite States. 385

As the Court indicated -

“a median line divides equally between the two
opposite countries areas that can be regarded as
being the natural prolongation of the territory of
each of them.” 386

6.9. Since that time, the law has developed with even greater

clarity. Given Nicaragua’s apparent reliance on this

jurisprudence to support its argument that there is no scope for

plotting an equidistance line as the first step in this case, it is
necessary to review the relevant precedents once more.

(1) L IBYA -M ALTA

6.10. In 1985, when the Libya-Malta case was decided, the

Court had no hesitation in starting with the median line between

385
North Sea Continental Sh elf, Judgment, I.C.J. Reports 1969, p. 36,
386a. 57.
Ibid., p. 37, para. 58.

200Libya and Malta as the provisional delimitation line despite the
fact that Malta was a group of islands. That line was then

adjusted somewhat to the north to take into account the relevant

geographical circumstances characterizing the case.

6.11. Nicaragua’s Reply argues that the Libya-Malta case

“confirms that the establishment of a provisional equidistance

line in any case is not a mechanical process.” It then cites a

passage from the Court’s Judgment for the proposition that,

even as a preliminary step, the Court did not accept that the
387
equidistance method is one that “must be used.”

6.12. In making this argument, Nicaragua overlooks the fact

that, later in the same Judgment, the Court went on to state that:

“It will first make a provisional delimitation
using a criterion and a method both of which are

clearly destined to play an 388ortant role in
producing a final result.”

6.13. The criterion or method in question, as to which the

Court said it had little doubt, was linked to the distance formula

relating to the extent of a State’s title to maritime areas in order

to arrive in the first place at a provisional result which was

“consistent with the concepts underlying the attribution of legal
389
title.”

387 NR, para. 6.63.
388 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 46, para. 60.
389 Ibid., pp. 46-47, para. 61.

2016.14. The method being referred to by the Court in this

context was the median line. Accordingly, the Court carried out
the delimitation between Libya and Malta in two stages: first, it

identified the median line; second, it adjusted that line to take

into account the relevant geographic circumstances. The result

is depicted on Figure R-6.1.

(2) G REENLAND -JAN M AYEN

6.15. The Court adopted a similar approach in the Jan Mayen
case, another case involving a small island – in this instance,

with a temporary population of just 25 scientists – facing the

much longer coast of Greenland. As for the mainland coast of

Norway, it was ignored because it was too far away, just as the

mainland coast of Colombia is too far away in this case. The
Court therefore started with a provisional median line between

Jan Mayen and Greenland which gave full effect to Jan Mayen.

As the Court noted:

“It is of course this prima facie equitable
character which constitutes the reason why the

equidistance method, endorsed by Article 6 of
the 1958 Convention, has played an important
role in the practice of States. The application of
that method to delimitations between opposite
coasts produces, in most geographical
390
circumstances, an equitable result.”

390
Maritime Delimitation in the Areatween Greenland and Jan
Mayen, Judgment, I.C.J. Reports 1993, p. 67, para. 65.

2026.16. It is true that the Court then adjusted this line at the
second stage of the process in order to take account of the

relevant circumstances of the case. For present purposes,

however, the important point is that the Court started with an

equidistance line as the first step.

6.17. Nicaragua asserts that the case “substantially hinged

around a very special circumstance” – the Capelin fisheries,

which the Court “attempted to distribute in the most equitable

fashion” – and that in the present case there are no resources of
this kind necessitating anything like the same kind of

solution.391

6.18. Three points may be made in response. First, the Court
adjusted the median line in only one of the three delimitation

zones it had identified in order to take into account access to the

fish resources. In the other two zones, fish were not an issue

and did not influence the course of the boundary. Second, this

element in no way detracts from the fact that, as a matter of
principle, the Court considered that the median line between the

island and the mainland was the appropriate starting point for

delimitation. Third, under Nicaragua’s alternative theory –

pursuant to which it argues that it should receive a full 200-mile
entitlement subject only to the enclaving of Colombia’s islands

– Greenland should have received its full 200-nautical mile

entitlement too. Clearly, this did not happen, notwithstanding

391 NR, para. 5.26 (1).

204the fact that according Greenland a full 200 nautical mile

continental shelf and fishing zone would not have reached up to

Jan Mayen’s 12-mile territorial sea. Thus, it makes no

difference that the opposite coasts of the Parties in this case are
“insufficiently far apart” for Nicaragua to enjoy a full 200-mile

extension of maritime rights. Colombia’s opposite coasts of its

islands do not enjoy such rights towards Nicaragua either, and
neither did the mainland coast of Greenland even though it was

located more than 200 nautical miles from Jan Mayen. The

resulting delimitation line actually accorded to Jan Mayen the

equivalent of roughly a three-quarters equidistance effect
despite its small size as can be seen on Figure R-6.2.

(3) Q ATAR -B AHRAIN

6.19. In the Qatar-Bahrain case, the Court articulated a
principle which has since became an integral part of the law of

maritime delimitation. This was the principle that the

“equidistance/special circumstances rule” is closely related to

the “equitable principles/relevant circumstances rule” in cases of
maritime delimitation. In the words of the Judgment:

“The Court further notes that the equidistance/special
circumstances rule, which is applicable in
particular to the delimitation of the territorial sea,
and the equitable principles/relevant circumstances
rule, as it has been developed since 1958 in case-
law and State practice with regard to the
delimitation of the continental shelf and the

205 exclusive economic zone, are closely
interrelated.” 392

6.20. On the basis of that principle, the Court once again

employed the equidistance method as the starting point for the

delimitation of a single maritime boundary, as the Nicaraguan
393
Reply acknowledges.

6.21. Nicaragua attempts to distinguish the case by arguing

that the geographic context in Qatar-Bahrain is “plainly

different” from the present case, and that the Court in the former

case did not use a tiny feature known as the Fasht al Jarim for

purposes of plotting the equidistance line. 394

6.22. Each case obviously presents its own set of geographic

and other circumstances and is, in this sense, unique. But that

does not detract from the force of the statement of principle the

Court laid down in Qatar-Bahrain: namely, that the

“equidistance/specialrc ciumstances” and “equitable p nrciiples/relevant
circumstances”rulesarecloselyrelated. It is the assimilation of

these two rules that provides the underlying predicate for using

an equidistance or median line as the first step in delimitation.

392
Maritime Delimitation and Territorial Questions between Qatar and
393rain, Merits, Judgment, I.C.J. Reports 2001, p. 111, para. 231.
394 NR, para. 6.64.
Ibid., para. 6.65. It should be recalle d, however, that the Court did
give full effect to the small Qatari island of Janan despite the fact that it faced
a significantly longer stretch of coast of Bahrain.

207 (4) C AMEROON -N IGERIA

6.23. The Nicaraguan Reply then takes aim at the Cameroon-

Nigeria case. It argues that the similarity between the two rules

referred to above “does not prove a presumption in favour of the
395
equidistance method.” The Reply then goes on to assert:

“To the contrary, it only highlights the fact that
mention of equidistance was carefully avoided

when dealing with the delim396tion of the more
extensive maritime areas.”

6.24. If, by this statement, Nicaragua is referring to the

difference in language appearing in Article 15 of the 1982

Convention (dealing with the delimitation of the territorial sea)

and Articles 74(1) and 83(1) (dealing with the delimitation of

the exclusive economic zone and the continental shelf), then it is

precisely on this point that the Court has effectively held that
both formulae lead to the application of the same delimitation

methodology. As the Court explained in Cameroon-Nigeria:

“The Court has on various occasions made it
clear what the applicable criteria, principles and
rules of delimitation are when a line covering
several zones of coincident jurisdictions is to be
determined. They are expressed in the so-called

equitable principles/relevant circumstances method.
This method, which is very similar to the
equidistance/special circumstances method applicable
in delimitation of the territorial sea, involves first
drawing an equidistance line, then considering

whether there are factors calling for the

395
396 NR, para. 6.66.
Ibid.

208 adjustment or shifting of that line in order to
achieve an “equitable result”. 397

6.25. In other words, the Court clearly did consider that there
was a presumption in favour of equidistance, at least as a first

step in the process. By positing the equidistance line as the

provisional line, subject to a second step whereby the relevant

circumstances are considered in order to determine whether they

justify an adjustment to the equidistance line, the Court was able
to reflect equitable principles while at the same time providing a

degree of consistency and predictability to the process that

recourse to equidistance produces.

6.26. The advantages of employing equidistance in this
manner have been cogently summarized by Professor Weil. He

writes:

“To the simplicity and objectivity of the method

must be added the fact that, even though it does
not always lead to an equitable result in itself, it
does produce a line which is prima facie
equitable. A method which divides the
overlapping areas more or less equally respects,

prima facie, the equal right of the two countries
to a certain physical area of maritime jurisdiction
and thus, again prima facie , avoids an
unreasonable encroachment of one State upon the
other. A line of equidistance is especially to be

recommended as a starting point in that it lends
itself particularly well to any adjustments which

397
Land and Maritime Boundary between Cameroon and Nigeria
(Cameroon v. Nigeria: Equatorial Guine a intervening), Judgment, I.C.J.
Reports 2002, p. 441, para. 288.

209 may prove necessary in order to meet the
requirement of an equitable result”. 398

(5) R OMANIA -U KRAINE

6.27. Notwithstanding the precedents discussed above,

Nicaragua argues that Colombia’s error lies in assuming that
equidistance always has to form the starting point for

delimitation. In support of this proposition, the Nicaragua Reply

cites the Romania-Ukraine case. Nicaragua maintains that, in

that case, the Court did not start with the establishment of a

“provisional equidistance line”, but rather it established only “ a

provisional delimitation line , using methods that are

geometrically objective and also appropriate for the geography
399
of the area in which the delimitation is to take place”.

6.28. What Nicaragua fails to point out, however, is that in the

same paragraph of the Court’s Judgment from which it cites, the

Court went on to state:

“So far as opposite coasts are concerned, the
provisional line will consist of a median line
400
between the two coasts.”

In another passage omitted by Nicaragua, the Court then added:

398
P. Weil, The Law of Maritime Delimitation - Reflectio(Grotius
399lications, Cambridge, 1989), p. 206.
NR, para. 6.68 (emphasis in Nicaragua’s version), citing tCase
Concerning Maritime Delimita tion in the Black Sea (Romania v. Ukraine),
400gment of 3 February 2009, p. 37, para. 116.
Case Concerning Maritime Delimitation in the Black Sea (Romania
v. Ukraine), Judgment of 3 February 2009, p. 37, para. 116. (emphasis
added).

210 “In keeping with its settled jurisprudence on
maritime delimitation, the first stage of the
Court’s approach is to establish the provisional
equidistance line.”

And it continued:

“At this initial stage of the construction of the
provisional equidistance line the Court is not yet

concerned with any relevant circumstances that
may obtain and the line is plotted on strictly
geometrical criteria on the basis of objective
data.”401

6.29. Once again, therefore, the Court unequivocally endorsed
the two-step process for delimitation, the first step of which is

the plotting of the provisional equidistance line in keeping with

what the Court termed its “settled jurisprudence”.

(6) O THER P RECEDENTS

6.30. Arbitral tribunals, including those recently established

pursuant to AnnexVII of the 1982 Convention, have followed
the Court’s lead. For example, the Tribunal in the Barbados-

Trinidad and Tobago case, which involved a delimitation

between islands, referred to the governing rule in the following

way:

“The determination of the line of delimitation
thus normally follows a two-step approach. First,
a provisional line of equidistance is posited as a

hypothesis and a practical starting point. While a

401
Case Concerning Maritime Delimitation in the Black Sea (Romania
v. Ukraine), Judgment of 3 February 2009, p. 37, para. 118.

211 convenient starting point, equidistance alone will
in many circumstances not ensure an equitable

result in the light of the peculiarities of each
specific case. The second step accordingly
requires the examination of this provisional line
in the light of relevant circumstances, which are

case specific, so as to determine whether it is
necessary to adjust the provisional equidistance
line in order to achieve an equitable result… This
approach is usually referred to as the
402
‘equidistance/relevant circumstances’ principle.”

6.31. The Tribunal in the Guyana-Suriname arbitration

adopted a similar approach. The Tribunal explained the position

is its Award as follows:

“The case law of the International Court of
Justice and arbitral jurisprudence as well as State

practice are at one in holding that the delimitation
process should, in appropriate cases, begin by
positing a provisional equidistance line which
may be adjusted in light of relevant

circumstan403 in order to achieve an equitable
solution.”

(7) C ONCLUSIONS AS TO THE ESTABLISHMENT OF THE
PROVISIONAL EQUIDISTANCE LINE AS A FIRST STEP

6.32. The equidistance-relevant circumstances rule in question
applies equally to delimitations between States with adjacent or

quasi-adjacent coasts (as in the Qatar-Bahrain, Cameroon-

Nigeria, Romania-Ukraine and Guyana-Suriname cases ), as

402 Award in the Matter of an Arbitration between Barbados and the
Republic of Trinidad and Tobago, 11 April 2006, para. 242.
403
Award in the Matter of an Arbitration between Guyana and
Suriname, 17 September 2007, para. 342.

212well as to delimitations between States with opposite coasts

(Libya-Malta, Denmark-Norway with respect to delimitation

between Jan Mayen and Greenland, Romania-Ukraine,

Barbados-Trinidad and Tobago). If anything, equidistance is an
even more appropriate starting point for opposite coasts

delimitation - precisely the situation that exists in the present

case. As the Court noted in its Judgment in Libya-Malta (citing

with approval from the North Sea cases):

“The Court has itself noted that the equitable
nature of the equidistance method is particularly

pronounced in cases where delimitation has to be 404
effected between States with opposite coasts.”

To which the Court added:

“It is clear that, in these circumstances, the
tracing of a median line between those coasts, by
way of a provisional step in a process to be
continued by other operations, is the most
judicious manner of proceeding with a view to

the even405l achievement of an equitable
result.”

6.33. In view of the overwhelming weight of the precedents, it

is astonishing to find the Nicaraguan Reply asserting the

contrary. According to Nicaragua:

“In the light of the jurisprudence of the Court and

international tribunals, Nicaragua finds that the
conclusion of the Counter-Memorial that the
basic rule of maritime delimitation law as a first

404
Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
405orts 1985, p. 47, para. 62.
Ibid.

213 step requires the plotting of an equidistance line
is not correct.”406

6.34. It is the Nicaraguan Reply that is in error. The “settled

jurisprudence” clearly points to the existence of such a rule. As

discussed above, the identification of an equidistance line as a

first step in the delimitation process has consistently been used
in cases involving opposite States ever since Libya-Malta, and

also more recently in cases involving adjacent or quasi-adjacent

coasts.

6.35. Nicaragua next argues that an equidistance line as a

starting point “could have merit” where the area to be delimited
407
is between two opposite and similar coasts. But the case law
makes no such distinctions. The provisional equidistance line is

clearly not limited to situations where the coasts of the Parties

are opposite and similar. It has been used in situations where a

small island (or islands) face a significantly longer mainland

coast, as in the Libya-Malta and Jan Mayen cases, as well as in

delimitations between islands which are different in size, as in
the Barbados-Trinidad and Tobago arbitration. To the extent

that coastal lengths may be considered to constitute a relevant

circumstance calling for some adjustment to be made to the

provisional line, this can be, and has been, accommodated at the

second stage of the process - the relevant circumstances stage.

406
407 NR, para. 6.69.
NR, para. 6.72.

214That is precisely how the matter was dealt with in all three of

the cases mentioned above.

6.36. In the present case, there is no reason for the Court to

depart from its well-established practice. The plotting of an

equidistance line based on geometrical criteria and objective

data is a straightforward task. It can readily be carried out using
basepoints situated on the relevant opposite coasts of the Parties

as Colombia has done.

C. Even Where the Plotting of a Provisional Equidistance
Line Is Not Practical, Equidistance Remains the Rule

6.37. There may be exceptional geographic situations where

the plotting of the provisional equidistance line is not practical

due to the lack of appropriate basepoints from which to plot

such a line. The Nicaragua-Honduras case is one such
example. There, the land boundary between the Parties met the

sea in a delta region formed by the River Coco at a point where

the general direction of the coast changed radically. As the

Court noted, “[a]ll deltas are by definition geographical

accidents of an unstable nature and suffer changes in size and
form in relatively short periods of time.” 408

6.38. In Nicaragua-Honduras, Nicaragua itself explained that,

because of the particular characteristics of the area where the

408
Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
p. 14, para. 32.

215land boundary intersected with the coast, “the technical method
409
of equidistance is not feasible.” For its part, the Court

observed that “neither Party has as its main argument a call for a

provisional equidistance line as the most suitable method of
410
delimitation.” The Court then went on to observe that the

geographical and geomorphological difficulties resulting from

the characteristics of the land boundary terminus -

“are further exacerbated by the absence of viable
basepoints claimed or accepted by the Parties
411
themselves at Cape Gracias a Dios.”

As the Court then explained:

“Given the set of circumstances in the current
case it is impossible for the Court to identify base
points and construct a provisional equidistance

line for the single maritime boundary delimiting
maritime areas off the Parties’ mainland
coasts.” 412

6.39. It was for these reasons that the Court concluded that the

equidistance method was not practical, and it adopted a coastal

bisector instead. Yet the bisector method is essentially no more

than a simplified version of equidistance based on coastal fronts

instead of specific basepoints. Nonetheless, the Court went on

409 Territorial and Maritime Dispute between Nicaragua and Honduras

in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
41027, para. 84.
411 Ibid., p. 75, para. 275.
412 Ibid., p. 75, para. 278.
Ibid., p. 76, para. 280.

216to emphasize that, “ at the same time equidistance remains the

general rule.” 413

6.40. Similar problems for the construction of a provisional

equidistance line do not exist in this case. Both Parties have

coasts that front the area to be delimited, and the selection of the

basepoints on those coasts from which to plot the equidistance
line can be identified based on objective data, as Colombia has

done. 414 Given that “equidistance remains the general rule,” that

rule can be readily applied in the present case.

6.41. Neither the size of Colombia’s islands nor the

characteristics of Nicaragua’s coast including its offshore

islands makes any difference at this initial stage of the process.

Application of the equidistance method as the first step in the
delimitation exercise has been used without any difficulty even

in situations involving islands facing mainland coasts both in the

case precedents and frequently even as the final boundary in

State practice, as will be discussed in Chapter 7.

6.42. As already recalled, in the Libya-Malta case equidistance

was applied as the first step notwithstanding the fact that the

basepoints on one of the party’s coast lay on an island (Malta)
while the other party (Libya) had a much longer mainland coast.

413 Territorial and Maritime Dispute between Nicaragua and Honduras
in the Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007,
p. 77, para. 281 (emphasis added).
414 See CCM, paras. 9.19-9.31 and Figure 9.2 thereto.

217Even though that provisional line was subsequently adjusted to

take into account the relevant circumstances (the difference in

coastal lengths), Malta, which consisted of a compact group of
islands as opposed to the long string of Colombian islands

comprising the San Andrés Archipelago, still received

substantially more than half-effect in the final delimitation.

6.43. Equidistance also formed the starting point in the

Denmark-Norway delimitation between Jan Mayen and
Greenland. Despite Jan Mayen’s small size and very limited

human presence, it still received the equivalent of about a three-

quarters equidistance effect in Zone 1 of the delimitation, and an

even greater effect in Zones 2 and 3.

6.44. In neither case was equidistance abandoned, as

Nicaragua argues it should be here.

D. Colombia’s Delimitation Respects, and Is Consistent
with, the Law

6.45. Colombia’s delimitation position set out in its Counter-

Memorial fully respects the principles alluded to above. After

reviewing the applicable principles and rules of international
law, Chapter9 of Colombia’s Counter-Memorial set out the

criteria for plotting the provisional equidistance line as the first

step in the delimitation. Colombia then identified the relevant
basepoints on both Parties’ coasts from which the equidistance

line should be calculated, and depicted the resulting course of

218that line on Figure 9.2 to the Counter-Memorial which is

reproduced here as Figure R-6.3.

6.46. On the Colombian side, basepoints are to be found on the
Alburquerque Cays, San Andrés Island, Providencia Island,

Santa Catalina Island and Quitasueño. On the Nicaraguan side,

the nearest basepoints are situated on the Islas Mangles (Corn

Islands), Roca Tyra, the Miskitos Cays and Edinburgh Reef.

Colombia selected these basepoints because, consistent with
what the Court said in the Qatar-Bahrain case (which formula

was cited with approval in the Court’s Judgment in Cameroon-

Nigeria and which was also employed by the Tribunal in the

Guyana-Suriname arbitration):

“The equidistance line is the line every point of
which is equidistant from the nearest points on

the baselines from which the breadth of the
territorial seas of each of the two States is
measured.” 415

6.47. Nicaragua complains that in this case an equidistance
line should not be applied because the mainland coasts of the

Parties are more than 400 nautical miles apart, and that such a

line of delimitation of the exclusive economic zone “does not lie

between them and no purpose would be served by using an

415
Maritime Delimitation and Territorial Questions between Qatar and
Bahrain, Merits, Judgment, I.C.J. Reports 2001, p. 94, para. 177. And see
Land and Maritime Boundary between Cameroon and Nigeria (Cameroon v.
Nigeria: Equatorial Guinea intervening), Judgment I.C.J. Reports 2002, p.
442, para. 290. And, for similar treatment of basepoints, see In the matter of
an Arbitration between Guyana an d Suriname, Award dated 17 September
2007, p. 113, para. 352.

219equidistance line as a starting point for any such
416
delimitation.” This argument is a complete non-sequitur.

6.48. Of course, in its Memorial Nicaragua did consider that
an equidistance line was relevant – albeit the wrong

equidistance line using the irrelevant mainland coast of

Colombia – for purposes of advancing a mainland-to-mainland

median line claim. But just because Colombia’s mainland coast

is too far away, and thus not relevant, does not mean that an
equidistance line should be abandoned or cannot be established

between the truly relevant coasts of the Parties – the coasts of

the western San Andrés Archipelago island group and the

opposite Nicaraguan coast.

6.49. The Nicaraguan Reply also accuses Colombia of
“arbitrarily” placing an equidistance line be tween what it calls

“minor features”. 417 But Colombia’s methodology is in no way

arbitrary: it is based on the normal way an equidistance line is

plotted – that is, calculated from the nearest basepoints on the

baselines of the Parties from which they measure their territorial
seas. The basepoints selected by Colombia lie on actual land

territory or on low-tide elevations f alling within the territorial

sea of islands comprising the San Andrés Archipelago. They

are a direct function of natural and political geography, it being

recalled that geography is not to be refashioned in any event.

Moreover, Colombia’s islands are not “minor features”. They
416
417 NR, para. 6.58.
NR, para. 6.58.

221form part of a substantial political unit having important social,

economic and security components, and a population of over

70,000.

6.50. As previously noted, Nicaragua also hypothesizes that an

equidistance line could only have merit as a starting point if it

lies between two opposite and similar coasts. 418 Colombia has

already shown that this argument runs counter to the case law as

well as to State practice. But Nicaragua does not stop there. It

then goes on assert that:

“In the present case, and under the scenario put
forward by Colombia, the exercise is indefensible
since there is no Colombian coast opposite
419
Nicaragua’s...”

Nicaragua also disputes that the islands of San Andrés and

Providencia could be said collectively to constitute a “coast”. 420

The Nicaraguan Reply then asserts in the same vein that “it is

appropriate to disregard all basepoints on islands and cays

claimed by Colombia in establishing the provisional line”, as

well as the basepoints on its own insular features. 421 Based on

these false premises, Nicaragua argues in favour of enclaves

around Colombia’s islands as its version of “provisional

lines”.422

418 NR, para. 6.72.
419 Ibid.
420 Ibid.
421 NR, para. 6.78.
422
NR, para. 6.82.

2226.51. This is refashioning geography taken to an extreme:
islands having a vibrant social, economic and political life with

over 70,000 inhabitants, and supporting important fishing

activities around each of them, cannot be said to have no coast

and no basepoints. It is self-evident that, as a matter of legal

entitlement, these islands have the same rights to a territorial
sea, contiguous zone, continental shelf and exclusive economic

zone as any other land territory. Those entitlements are

measured from basepoints on the coasts of each of the islands.

Contrary to Nicaragua’s assertion that its enclave lines are
“geometrically objective” and take due account of the projection

of Nicaragua’s coast, 423 enclaves are in no way appropriate and

take no account of the legitimate maritime entitlements

generated by the islands. Moreover, they have never been used
in similar geographic circumstances, as Chapter 7 will show.

Why, it might be asked, are islands such as Jan Mayen, Malta

and Barbados, not to mention the examples of State practice

referred to in the next chapter, entitled to such rights while

Colombia’s islands are not?

6.52. Notwithstanding these realities, the Nicaraguan Reply

attempts to use the Court’s treatm ent of Serpents’ Island in the

Romania-Ukraine as support for its argument that Colombia’s
islands should be ignored for purposes of drawing an

equidistance line here. In referring to Romania-Ukraine, the

Reply asserts:

423 NR, para. 6.83.

223 “In that case, the Court established an
equidistance line, which however, did not take
into account certain points along the coasts of the
two parties, including Serpents’ Island of
424
Ukraine.”

6.53. The reason why basepoints on Serpents’ Island were not

used for equidistance purposes in Romania-Ukraine was due to

the fact that the delimitation in that case took place in an entirely

different geographic context from that which exists in this case.

6.54. The dominant factor in Romania-Ukraine influencing the

delimitation was the presence of the mainland coasts of the

Parties which stood in both an opposite and adjacent
relationship to each other with the opposite mainland coasts

separated by a distance of only some 200 nautical miles.

Serpents’ Island lay about 20 nautical miles off the Ukrainian

coast and was thus not considered to be one of a cluster of fringe

islands constituting the “coast” of Ukraine. 425

6.55. Given that Serpents’ Island was not deemed to form part

of the mainland coastal configuration, it was not used to provide
426
basepoints for equidistance purposes. Moreover, the Court

also observed that any maritime entitlements of Serpents’ Island
could not project further than the entitlements generated by

Ukraine’s mainland coast because of the southern limit of the

424 NR, para. 6.57.
425 Maritime Delimitation in the Black Sea (Romania v. Ukraine),
Judgment of 3 February 2009, p. 45, para. 149.
426 Ibid., p. 56, para. 186.

224relevant area which stopped where the presence of third States

came to play. It thereby followed that any possible entitlements

generated by the island were “fully subsumed by the

entitlements generated by the western and eastern mainland
427
coasts of Ukraine itself.”

6.56. The same considerations do not apply here. The location

of Colombia’s islands is such that their maritime entitlements

that project towards the west – i.e., towards Nicaragua – are not

subsumed by the entitlements generated by Colombia’s

mainland coast. Colombia’s mainland coast is not relevant due

to its remoteness. Colombia’s islands, on the other hand,
generate their own maritime entitlements. This being the case,

there is no reason why basepoints located on those islands

should not be used for purposes of plotting the provisional

equidistance line.

6.57. Nicaragua also cites the example of the tiny rock of Fifla
which was not used in order to establish the provisional

equidistance line in the Libya-Malta case. 428 Once again,

however, the situation was not analogous to the present case.

6.58. It was not disputed in Libya-Malta that Fifla was a rock.

It was referred to as such in the Court’s Judgment (“the

427 Maritime Delimitation in the Black Sea (Romania v. Ukraine),

428gment of 3 February 2009, p. 56, para. 187.
NR, para. 6.77.

225 429
uninhabited rock of Fifla”), and it was actually used by the
British Navy for target practice during the Second World War.

As such, it had no entitlement beyond a territorial sea (or, at

most, a contiguous zone) in any event. Moreover, Fifla lay less

than three miles off the coast of the mainland of Malta, well

within the territorial sea of the latter. Given its proximity to the

main coast of Malta, it was precisely the kind of minor coastal

feature the distorting effect of which could be eliminated by

using the coast of the main island of Malta instead. The result

was still the use of equidistance between a small island on the

one hand and a longer mainland coast on the other as the first
step in the exercise.

6.59. Nicaragua also refers to the fact that the “very small

island” of Qit’at Jaradah was disregarded for purposes of
430
drawing the equidistance line in the Qatar-Bahrain case. But,

once again, the geographic context of that case was very

different from the present case.

6.60. Qit’at Jaradah was no more than an uninhabited and tiny
sand spit, without any vegetation, a very small part of which

(measuring a mere 12 metres by 4 metres) was above water at

high tide.431 Earlier British Admiralty charts had depicted it as a

low-tide elevation, although the Court found it to be an island

429 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 20, para. 15.
430 NR, para. 6.75.
431 Maritime Delimitation and Territorial Questions between Qatar and
Bahrain, Merits, Judgment, I.C.J. Reports 2001, p. 99, para. 197.

226based on an expert report filed by Bahrain in the case. As an

“insignificant maritime feature” lying close to the Parties coasts,

it was thus not used as a basepoint for equidistance purposes,

and the delimitation line passed between Qit’at Jaradah and
Fasht ad Dibal, the latter of which was a low-tide elevation

situated within Qatar’s territorial sea. 432

6.61. Nicaragua then refers to the fact that the Tunisian island

of Djerba had no effect on the delimitation between Tunisia and

Libya. 433 However, as Nicaragua itself recognizes, the Court

did not adopt an equidistance line in that case between the

adjacent coasts of the Parties, and neither party had in fact

argued in favour of equidistance. The delimitation line in the

first sector was based on other overriding factors such as the

conduct of the parties in granting petroleum licenses, the

perpendicular from the general direction of the coast and the
fishing practices of the Parties’ colonial predecessors. 434

6.62. It follows that none of the examples that Nicaragua

seeks to rely on detract from the well-established principle – the

“settled jurisprudence” – that the first step in the delimitation

should be the establishment of the provisional equidistance line.

Nicaragua’s contention that it is appropriate to disregard all

basepoints on Colombia’s islands and cays has no support in the

432
Maritime Delimitation and Territorial Questions between Qatar and
433rain, Merits, Judgment, I.C.J. Reports 2001, pp. 104-108, paras. 219-220.
NR, para. 6.79.
434 Continental Shelf (T unisia/Libyan Arab Jamahiriya) Judgment,
I.C.J. Reports 1982, pp. 85-86, para. 121.

227law given the independent maritime entitlements of those
435
islands. If a coast radiates out in all directions for entitlement

purposes when it stands alone, there is no reason for it to cease

to do so when it meets the projection of the coast of another
State. Here, the projection fr om the coasts of Colombia’s

islands meets the projection from Nicaragua’s coasts in the area

between the westernmost of Colombia’s islands and Nicaragua.

Colombia has thus fully followed the methodology endorsed by

the Court and arbitral tribunals in constructing an equidistance
line as the first step in this area.

E. Nicaragua’s Mainland Coast

6.63. Nicaragua complains that Colombia’s provisional

equidistance line only takes into account Nicaragua’s islands as
providing basepoints but ignores Nicaragua’s mainland coast.

As the Nicaraguan Reply asserts: “Colombia errs by ignoring

Nicaragua’s mainland coast in the construction of her
436
provisional equidistance line.”

6.64. As previously explained, Colombia has adopted the
principle articulated in the Qatar-Bahrain and Cameroon-

Nigeria cases, as well as in the Guyana-Suriname arbitration,

according to which it has used the nearest basepoints on the

Parties’ coasts from which the breadth of their respective

territorial seas is measured for plotting the line. Given that

435
436 NR, para. 6.79.
NR, para. 6.7; and see NR, para. 6.31.

228Nicaragua itself claims that its islands form an integral part of
its mainland coast, Colombia’s methodology is sound.

6.65. It is perfectly possible, however, to construct an

equidistance line between Colom bia’s islands (recalling that

even Nicaragua admits that at least the islands of San Andrés,
Providencia and Santa Catalina “constitute relevant coast[s]” 437)

and Nicaragua’s mainland coast without taking account of

Nicaragua’s islands.

6.66. The result of using Nicaragua’s mainland coast for the

purpose of constructing a provisional equidistance line is

illustrated on Figure R-6.4. As can be seen, this has the effect

of shifting the equidistance line westwards.

6.67. Consistent with the Court’s approach in both the Libya-

Malta and Jan Mayen cases, the question would then arise

whether that equidistance line should be adjusted to take into

account the relevant circumstances characterizing the
delimitation area of which the coastal geography of the Parties,

including Nicaragua’s mainland coast, may be one such

element. This is a matter that is addressed in greater detail in

Chapter 8 where the relevant circumstances are addressed.

6.68. For present purposes, it may be noted that if this islands-

to-mainland equidistance line, as illustrated in Figure R-6.4 ,

437 NR, para. 6.30.

229was shifted so as to accord Colomb ia’s islands a three-quarter

effect – as was more or less the practical result in both the

Libya-Malta and Jan Mayen cases – the resulting line would lie

in broadly the same area as Colombia’s equidistance line that
uses Nicaragua’s islands as basepoints. In any event, there is

certainly no justification for according Nicaragua’s islands a

greater equidistance effect than Colombia’s islands.

6.69. The foregoing discussion shows that there is nothing

“arbitrary” or inappropriate about Colombia’s methodology.

The establishment of the provisional equidistance line produces
a line that is prima facie equitable as the starting point for the

delimitation. That line can then be assessed in the light of all

the relevant circumstances which, in this case, include the past
conduct of the Parties evidencing where they have exercised

maritime jurisdiction, the significance of the 82°W meridian,

security and stability considerations, traditional access to the

fishing resources of the area, the presence of third States and
coastal geography.

6.70. All of these factors should be balanced up in the
equation for purposes of achieving an equitable result. Should,

for example, the Court consider that some adjustment of an

islands-to-mainland median line is warranted to take into

account Nicaragua’s mainland coast while at the same time
respecting the other relevant circumstances, this can readily be

achieved using the same methodology that the Court has

231adopted in the past without departing from the basic two-step

process that the Court has identified as a general rule applicable

to maritime delimitation.

F. Nicaragua’s Claims Ignore the Law

6.71. In contrast, Nicaragua completely ignores the well
developed principles of maritime delimitation. Nicaragua has

conceded that its mainland-to-mainland single maritime

boundary is not tenable and has abandoned that position. Its
new continental shelf claim (equal division of overlapping

continental margins) is not grounded on coastal geography,

takes no account of the “equidistance/special circumstances” or
“equitable principles/relevant circumstances” rule, and does not

follow the two-step approach to delimitation by first plotting the

provisional equidistance line, and then considering whether

there are any relevant circumstances calling for the shifting of
that line.

6.72. To compound its errors, the Nicaraguan Reply makes no
mention of the relevant basepoints which should control the

course of the equidistance line, although it criticizes Colombia’s

choice of basepoints. Nicaragua simply bases itself on geology
and geomorphology. This is frankly admitted in the Nicaraguan

Reply when it states:

“The position of Nicaragua, as explained in
Chapter III above, is that in a delimitation of the

continental shelf, such as has been requested

232 [belatedly] by Nicaragua, where the distance
principle is not involved but only the natural

prolongation of the land territory, the question of
the provisional equidistance line has no role to
play.” 438

6.73. Equally untenable is Nicaragua’s assertion that “it has to

be questioned whether there could be an equidistance line in the
present case which might serve as a starting point that is

‘appropriate for the geography of the area in which the

delimitation is to take place’.” 439 In this case, the equidistance

line - whether an islands-to-islands equidistance line or an

islands-to-mainland equidistance line - can readily be identified

based on objective geographic criteria as the first step in the

delimitation exercise.

G. Conclusions

6.74. As has been demonstrated, it is entirely appropriate and

consistent with the law, including the jurisprudence dealing with

delimitations involving islands, for the equidistance line to be

posited as the provisional line.

6.75. Nicaragua itself had argued in its Memorial that the

median line between the Parties’ coasts was the appropriate

starting point, although it mistakenly used the Colombian

mainland coast as a relevant coast for this purpose when that

438
439 NR, para. 6.49.
NR, para. 6.58.

233coast is not germane. Just because Nicaragua now admits that

the mainland coasts of the Parties are too far apart, it does not

follow that “no purpose would be served by using an

equidistance line as a starting point for any such
delimitation”. 440

6.76. Contrary to Nicaragua’s assertion, Colombia’s

equidistance line is not “arbitrarily-placed”, 441but is based on

clearly identified basepoints on the opposite and relevant coasts

of the Parties. Nor does Nicaragua’s argument that there is no

Colombian coast opposite Nic aragua’s reflect the actual
442
geography of the area. As has been seen, Nicaragua assumes

that for a provisional equidistance line to be applied, there must
443
be “two opposite and similar coasts ”. This argument is

clearly wrong, and the Court has had no problem in establishing

the provisional equidistance line in cases such as Jan Mayen and
Libya-Malta where the relevant coasts of the Parties were

dissimilar. In the present case, Colombia’s provisional

equidistance line has been established between the islands of

both Parties. As has been noted, however, it is also possible to

draw a provisional equidistance line between Colombia’s

islands and Nicaragua’s mainland coast. In either case, the

equidistance line methodology can be readily applied.

440
441 NR, para. 6.58.
NR, para. 6.51.
442 NR, para. 6.72.
443 Ibid., (Emphasis added).

234 Chapter 7

NICARAGUA’S ENCLAVE THEORY

A. Introduction

7.1. The initial position adopted by Nicaragua in this case

centered around its contention that a single maritime boundary

should be delimited between the mainland coasts of the Parties.

As for Colombia’s islands, the Nicaraguan Memorial argued
that they should be enclaved by either three-mile or twelve-mile

limits. Nicaragua justified its approach using the erroneous

argument that “the relationship between the mainland coasts of

Nicaragua and the islands cannot be characterized as merely
444
opposite”, and that “the San Andrés Group does not form part
of the coastal front of Colombia.”445

7.2. While the single maritime boundary claim has been

abandoned in favour of a new continental shelf claim, Nicaragua

still maintains that Colombia’s islands should be enclaved

within Nicaragua’s continental shelf. Nicaragua complains in
this respect that Colombia disputes that Nicaragua should enjoy

at least a 200nautical mile limit regardless of the presence of

444
445 NM, para. 3.11.
Ibid., section heading at p. 239.

235the islands, which Nicaragua contends should not “block” its
446
entitlement. This is mere question begging.

7.3. As Chapter 5 demonstrated, Nicaragua’s argument
ignores the fact that, under international law, Colombia’s islands

both individually and collectively also possess coasts that

generate their own independent entitlements to continental shelf

and column of water rights. Thus, Colombia’s islands do

possess a coastal front and they do lie opposite Nicaragua’s
coast. It proves nothing for Nicaragua to assert that Colombia’s

islands should be enclaved within Nicaragua’s own continental

shelf since, as a matter of legal right, entitlement to continental

shelf rights (as well as column of water rights) does not

exclusively rest in Nicaragua, but in Colombia as well.

Consequently, the entire premise from which Nicaragua starts is
fundamentally misplaced.

7.4. The Nicaraguan Reply also advances two fall-back

positions in response to Colombia’s equidistance based

delimitation methodology. The first is that, even if the present
delimitation is limited to a single maritime boundary lying

within 200nautical miles and not a continental shelf boundary,

the resulting boundary should still enclave Colombia’s islands

as was the case with respect to the Channel Islands in the Anglo-
447
French arbitration. The second is that, even if Colombia’s

islands are not to be fully enclaved, then just two of those
446
447 NR, para. 6.12.
NR, para. 6.3.

236islands (San Andrés Island and Providencia) should receive no

more than a thin sliver of maritime area corresponding to their

“coastal front” extending eastwards out to a distance of

200nautical miles, as was accorded to the islands of St. Pierre
and Miquelon in the Canada-France arbitration. 448

7.5. The gist of Nicaragua’s argument, repeated at several

places in the Reply, boils down to the contention that

Colombia’s islands should not be allowed to act as an
“impenetrable wall” against the natural prolongation or

projection of Nicaragua’s coasts, particularly its mainland

coast.449

7.6. None of these contentions has any merit and, as

Colombia will show, the solutions adopted in the cases on which
Nicaragua relies for enclaves or partial enclaves took place in

geographic circumstances that bear no relation to the present

case.

B. Islands Have Never Been Enclaved in the Situation

that Exists in the Present Case

(1) T HE BASIC GEOGRAPHIC FACTS

7.7. Apart from its legal shortcomings, Nicaragua’s enclave

position ignores the relevant geography of the area. As has been

shown, the San Andrés Archipelago comprises a large number

448
449 NR, para. 6.90 and Figure 6-11 thereto.
NR, paras. 6.5, 6.10 and 6.12, and Chapter VI(II) generally.

237of islands having their own legal entitlements and extending

northeast to southwest over a considerable distance. The islands

constitute an important geographic, economic, political and

social unit within Colombia, with three of the islands having a
significant population and almost all of the islands

accommodating manned installations and other facilities.

7.8. It follows that the present delimitation does not concern

a compact group of islands located in close proximity to another

State such that their territorial seas overlap or the mainland coast

is “blocked” beyond being accorded a very small area of
territorial sea if islands are not enclaved. San Andrés Island and

Alburquerque are both roughly 100miles from the Nicaraguan

mainland coast. Providencia and Santa Catalina are even further
away (some 121nautical miles). Quitasueño is a large feature

comprising some 34 individual islands and 20 low-tide

elevations as confirmed by the Smith Report. Quitasueño as a

whole is situated some 115 miles from Nicaragua’s coast.
Serrana Cay and Roncador are 165 and 186 miles respectively

from the Nicaraguan mainland coast, Serranilla is 196 miles

away and Bajo Nuevo is 266 nautical miles away.

7.9. As can be seen on Figure R-7.1, Providencia and Santa

Catalina (together with Low Cay) lie in close proximity to each

other with the result that the territorial seas of each overlap.
Providencia and San Andrés Island lie only about 47nautical

miles apart along a broad north-northeast to south-southeast

238axis. If 24-mile contiguous zones are posited for these islands,

the result is that these zones also meet and overlap due to their

proximity.

7.10. Alburquerque is located about 20nautical miles south-

southwest of San Andrés Island and about 25nautical miles

from East-Southeast Cays. The nearness of these three sets of
islands to each other is such that their territorial seas also meet

and overlap. The southern edge of Quitasueño lies about 37

nautical miles north of Low Cay, which is situated just north of

Santa Catalina. Once again, the 24-mile contiguous zones of
these features would meet and overlap because of the relatively

short distance between them. Quitasueño also lies less than

45nautical miles from Serrana, and Serrana lies only some
45nautical miles from Roncador. Contrary to the impression

Nicaragua tries to convey, therefore, these are not islands that

are widely dispersed or separated by long distances. Not only

do their continental shelf and EEZ entitlements overlap with
each other, so also do 24-mile belts equivalent to their

contiguous zones.

7.11. Given the irrelevance of Colombia’s mainland coast, the

delimitation by necessity falls to be established between the

westernmost islands of the Archipelago and Nicaragua’s coast,

as Colombia has shown in Chapters 5 and 6. For its part, the
provisional equidistance line does not even come close to

infringing on Nicaragua’s territorial sea or its contiguous zone.

240In fact, Nicaragua only enacted legislation providing for a
contiguous zone in March 2002 after it had initiated these

proceedings. 450

(2) T HIS SITUATION DISTINGUISHES THE PRESENT CASE
FROM THE EXAMPLES CITED BY N ICARAGUA

(i) The Anglo-French Arbitration

7.12. The only example that Nicaragua can cite where islands

have been fully enclaved concerns the Channel Islands in the

Anglo-French Arbitration. Not surprisingly, therefore, the

Nicaraguan Reply cites this example for its proposition that
islands should not “block” the frontal projection of a longer,

opposite mainland coast. 451

7.13. In making this argument Nicaragua again asserts that

Colombia’s islands are “on the wrong side” of the median
452
line. However, Colombia has already shown that this

argument presupposes the existence and relevance of a

mainland-to-mainland median line between the Parties which is

simply not the case given that those coasts are more than
400nautical miles apart. Colombia’s islands are also not

situated close to the Nicaraguan mainland. Unlike the case with

the Channel Islands off the coast of France, the territorial seas of

Colombia’s islands do not meet and overlap with the territorial

450 NM, Annex 67.
451 NR, para. 5.18.
452 NR, para. 5.21.

241sea of either Nicaragua’s own islands or its mainland coast. Nor

are Colombia’s islands surrounded on three sides by Nicaragua

mainland territory. In fact, Colombia’s islands face third States
to the north and south, and, to the east, they face Colombia’s

mainland coast, not Nicaragua.

(ii) Greenland-JaM nayen

7.14. The next precedent cited by Nicaragua is the Denmark-

Norway case involving the delimitation between Greenland and

the island of Jan Mayen. Contrary to Nicaragua’s fall-back

position, according to which Nicaragua should receive a full
200-nautical mile EEZ and continental shelf subject only to

Colombia’s islands being enclaved, the mainland coast of

Greenland was not accorded a full 200nautical miles in the
Court’s Judgment. As the Court explained:

“Nor do the circumstances require the Court to
uphold the claim of Denmark that the boundary
line should be drawn 200 miles from the
baselines on the coast of eastern Greenland, i.e., a
delimitation giving Denmark maximum
extension of its claim to continental shelf and
fishery zone.”

In a passage that is particularly re levant to the present case, the
Court then elaborated on its reasoning as follows:

“The coast of Jan Mayen, no less than that of

eastern Greenland, generates potential title to the
maritime areas recognized by customary law, i.e.,
in principle up to a limit of 200 miles from its
baselines. To attribute to Norway merely the
residual area left over after giving full effect to

242 the eastern coast of Greenland would run wholly
counter to the rights of Jan Mayen and also to the
453
demands of equity.”

7.15. In the final analysis, as noted in Chapter6, Jan Mayen

received more or less a “three-quarters effect” equidistance line,

and Greenland was accorded maritim e areas that extended

significantly less than 200nautical miles from its coast. 454

While Nicaragua tries to distinguish this case by arguing that the

main coast of Norway was irrelevant to that case, 455 the same

reasoning applies here; Colombia’s mainland coast is also

irrelevant to the present delimitation.

(iii) Libya-Malta (Italy’s Claims)

7.16. Nicaragua then refers to the treatment of Malta in the

Libya-Malta case – and to Italy’s claims which extended south

of Malta – to support the proposition that the entitlement of

Sicily was not blocked by the presence of Malta, but rather
456
extended south of that island.

7.17. Several points can be made in response to show that this

example is of no assistance to Nicaragua’s enclave theory.

453
Maritime Delimitation in the Area be tween Greenland and Jan
454en, Judgment, I.C.J. Reports 1993, p. 69, para. 70.
455 See para. 6.18 above.
456 NR, para. 5.26 (1).
NR, para. 6.13.

2437.18. First, Italy’s claims advanced during the oral hearings on

its request to intervene in the Libya-Malta case did not seek to

enclave Malta. They extended well to the east and west of

Malta leaving a gap of some 70 nautical miles (much wider than
Malta’s coastal front) to be delimited exclusively between Libya

and Malta as is illustrated on Figure R-7.2. If similar “gaps”

were accorded to Colombia’s islan ds, there would be no room
for Nicaragua to claim maritime areas to the north, south or east

of the islands.

7.19. Second, the Court in no way endorsed the legitimacy of
Italy’s claims which neither Malta nor Libya accepted. It

simply took note of them, , and refrained from delimiting areas

where a third State had indicated it had claims as part of its
customary practice of avoiding the delimitation of areas where

third States may have interests.

7.20. Third, under Nicaragua’s thesis, Libya should have been
entitled to a delimitation according to it a full 200-nautical mile

continental shelf by virtue of having a longer mainland coast.

This is what Nicaragua argues it is entitled to under its fall-back
position in this case. Clearly, however, such a proposition was

not accepted by the Court, which made only a relatively modest

(18 nautical miles) adjustment to the Libya-Malta median line to

take account of differences in coastal lengths.

244 (iv) France-Canad Aarbitration

7.21. Nicaragua next relies on the France-Canada Arbitration

for its alternative proposition that, at most, Colombia’s islands

should only receive a thin corridor of maritime entitlements

beyond three and twelve mile enclaves projecting to the east and
corresponding to the lengths of the east-facing coastal fronts of

San Andrés Island and Providencia. 457 This argument, which is

illustrated on Figure6-11 to Nicaragua’s Reply, is entirely

spurious and misrepresents the solution adopted by the Court of
Arbitration in the France-Canada case.

7.22. Even in the France-Canada arbitration, where the

geographic circumstances were much different than those that
exist in this case by virtue of the fact that the French islands

stood in a relationship of adjacency with the coast of

Newfoundland because of their proximity, the Court of

Arbitration accorded an additional twelve nautical miles around
most of the seaward side of St. Pierre and Miquelon from the

limit of their territorial seas - or a 24-nautical mile maritime belt

of EEZ corresponding to the contiguous zone - in addition to the

200-nautical mile projection of their coastal front seaward. As
the Court of Arbitration explained:

“A reasonable and equitable solution for the
western sector would be to grant to Saint Pierre
and Miquelon an additional twelve nautical miles
from the limit of its territorial sea, for its

457 NR, para. 6.90.

246 exclusive economic zone. That area will have
the extent of the contiguous zone referred to in
Article 33 of the 1982 Convention on the Law of
the Sea, which grants to the coastal State

jurisdiction to prevent infringement of its
customs, fiscal, immigration or sanitary
regulations.” 458

7.23. Notwithstanding this, Nicaragua asserts that the France-

Canada situation is “geographically similar” to the present
459
case. However, the geographic circumstances of the two

cases are in fact very different, and they lend no support for a
similar solution being adopted in this case.

7.24. The islands of St. Pierre and Miquelon were separated

from the Canadian coast of Newfoundland by a mere 10 nautical

miles. There was thus no room for the French islands to

“project” towards the Canadian coast beyond a median line

delimiting the territorial seas between those coasts. It was for

this reason that the Court of Arbitration observed: “the
460
prevailing and overall relationships is one of adjacency”, a
designation which hardly fits the relationship between

Colombia’s islands and Nicaragua. Even the nearest of

Colombia’s islands are more than ten times farther away from

458
Case concerning Delimitation of Maritime Areas between Canada
and the French Republic (St. Pierre and Miquelon), 1992, 31 I.L.M., p.1170,
para. 69.
459 NR, para. 6.21.
460 Case concerning Delimitation of Maritime Areas between Canada
and the French Republic (St. Pierre and Miquelon), 1992, 31 I.L.M., p. 1162,
para. 35.

247Nicaragua’s mainland coast than were St. Pierre and Miquelon

from Newfoundland.

7.25. Geographically, as can be seen from Figure R-7.3, the

coast of the Burin Peninsula on Newfoundland extended as far

out to sea as the larger of the two French islands, Miquelon, and

almost as far as the smaller island of St. Pierre. It was natural,
therefore, for that peninsula not to be “blocked” by the islands

because of its “adjacent” relationship. This is in sharp contrast

with the present case where the coast of Nicaragua is over 100

nautical miles away from the nearest coasts of Colombia’s

islands and is therefore not an “adjacent” coast nor similarly
“blocked”.

7.26. In the France-Canada arbitration, it was also significant

that Canada possessed coasts belonging to Nova Scotia to the

west and southwest of the French islands which lay within 60
nautical miles of the Newfoundland coast. Canada had adopted

a closing line between Cape Breton (Nova Scotia) to the

southwest tip of Newfoundland which the Court of Arbitration

recognized represented Canada’s coastlines lying inside the Gulf

of St. Lawrence that were “in direct opposition” to St. Pierre and
Miquelon. 461 In effect, therefore, Canada’s coasts surrounded

461
Case concerning Delimitation of Maritime Areas between Canada
and the French Republic (St. Pierre and Miquelon), 1992, 31 I.L.M., p. 1161,
para. 29.

248the islands of St. Pierre and Miquelon on three sides as is also
462
evident with reference to Figure R-7.3.

7.27. This situation does not even remotely exist in the present

case where Colombia’s islands stretch over a long distance well

off the Nicaraguan coast, and where third States lying to the

north and south of Colombia’s islands have recognized that
those islands are entitled to full effect in maritime delimitation

agreements concluded with Colombia.

7.28. There are accordingly no grounds for Nicaragua’s

attempt to graft the St. Pierre and Miquelon solution onto the
present case. The geographic situations bear no relationship to

each other.

7.29. Moreover, even if ( quod non ) one were to draw 24-

nautical mile belts around Colombia’s islands that lie directly
opposite Nicaragua (San Andrés, Providencia, Santa Catalina,

Low Cay, Alburquerque and Quitasueño), those belts would

overlap with each other and there would be no gaps in between.

This is shown on Figure R-7.1 above. In fact, the westernmost

islands comprising the San Andrés Archipelago are more than
twice as far from Nicaragua’s coast than they are from each

other, and Serrana and Roncador are three times farther away

from Nicaragua than they are from each other. Thus, even if the

462
Case concerning Delimitation of Maritime Areas between Canada
and the French Republic (St. Pierre and Miquelon), 1992, 31 I.L.M., p. 1160,
para. 22.

250approach adopted by the Court of Arbitration was applied in the
present case where the geographic facts do not justify such an

approach, there would still be no room for enclaving

Colombia’s islands since, from north to south, Colombia’s

islands are not separated by distances exceeding 48 nautical

miles.

(v) Dubai-Sharjah (Abu Musa)

7.30. The Nicaraguan Reply also refers to the treatment of the

island of Abu Musa in the Dubai-Sharjah arbitration to support

the contention that Colombia’s islands should be enclaved.

Once again, Nicaragua fails to appreciate the different
geographic and political context which characterized that case,

although it does acknowledge that San Andrés Island is more

than twice as large as Abu Musa and that Providencia is about

one and one-half times as large - a difference which Nicaragua
curiously asserts is “not much of a difference”.463

7.31. The Dubai-Sharjah case involved primarily a

delimitation between the adjacent coasts of two Emirates

forming part of the United Arab Emirates. The presence of Abu
Musa off the coast of Sharjah affected only part of the boundary.

Sovereignty over Abu Musa was (and still is) disputed between

Iran and Sharjah, whose mainland coasts lie opposite each other

across the Gulf. As the Charney and Alexander study on
International Maritime Boundaries notes:

463 NR, para. 6.103.

251 “The boundary dispute before the tribunal
involved the adjacent boundary between Dubai

and Sharjah and not the opposite boundary
between the United Arab Emirates and Iran.
Nevertheless, the tribunal found that because the
island is located at a point approximately

equidistant from the opposite coastlines the only
equitable solution was to enclave it and otherwise
to disregard it in the maritime boundary
delimitation.” 464

7.32. The present context is obviously different. This

delimitation does not involve adjacent coasts, and Colombia’s

mainland coast is not a relevant coast. Colombia’s islands also
lie over 100 nautical miles from Nicaragua’s mainland coast,

which contrasts with the situatio n of Abu Musa which is

situated just 35 miles from Sharjah and 43 miles from Iran. Abu

Musa’s size is just 4 square miles, and it has a population of
465
about 800 persons. Both of these figures are much smaller

than the corresponding figures for Colombia’s islands that face
Nicaragua.

7.33. Given the fact that Abu Musa more or less straddled a

median line between the opposite mainland coasts of the

Emirates and Iran, the tribunal’s delimitation did not fully

enclave the island. Rather, the 12-mile arc of territorial sea

accorded to Abu Musa extended less than one-quarter of the

464 J. Charney and L. Alexander eds., International Maritime
Boundaries, Vol. III, p. 2385.
465
Dubai-Sharjah Border Arbitration of 19 October 1981 , 91 ILR 543
at pp. 663 and 668.

252way around the island, and the entitlements of Dubai did not

extend beyond, or seaward of, the island. This can be contrasted
to the total enclaves that Nicaragua asserts in this case.

7.34. It was the particular geographic characteristics of the

case which led Abu Musa to be partially enclaved in the Dubai-

Sharjah arbitration. As Charney and Alexander explain:

“This solution was similar to those adopted in
maritime boundary agreements concluded for
other situations in the Persian Gulf. They

involved other small islands that intersected the
equidistant line: the islands of Al-Arabiya and
Farsi in the Saudi Arabian-Iran Agreement....
and Dayinah in the Abu Dhabi-Qatar
agreement....” 466

7.35. In short, Nicaragua is unable to cite any precedent

involving comparable geographic situations to support its thesis
that Colombia’s islands should be enclaved. Nicaragua’s claim

rests on a false premise - that the islands are situated on

Nicaragua’s continental shelf - when the islands generate their

own legal entitlements. The islands do not sit immediately off

Nicaragua’s coast such that they give rise to a territorial sea
delimitation or a “blocking” of that coast, as was the case with

respect to the Channel Islands and St. Pierre and Miquelon. Not

only do the continental shelf and EEZ entitlements of

Colombia’s islands overlap with each other, so also do their

466
J. Charney and L. Alexander eds., International Maritime
Boundaries, Vol. III, at p. 2385, citing the Dubai-Sharjah Award, 91 ILR at
p. 677.

253entitlements to a contiguous zone overlap and stretch over
considerable distances. Colombia’s islands are thus readily

distinguishable from situations where a compact group of

islands lies just a few miles off another State’s coast.

C. Small Islands Have Frequently Received Full

Effect in Maritime Delimitations

(1) S TATE PRACTICE GENERALLY

7.36. Colombia’s Counter-Memorial set out a number of
examples of State practice where islands have received a full

equidistance effect when they faced either opposite mainland

coasts or other islands lying off a mainland coast. 467 While

Nicaragua’s Reply attempts to distinguish some of these

examples, this section will show that Nicaragua’s arguments are
untenable, and that there are numerous examples of State

practice where relatively small islands have received full effect

when situated opposite longer, mainland coasts.

(i) India-Maldives

7.37. The first example cited in Colombia’s Counter-
Memorial was the delimitation between India and the Maldives

pursuant to which the relevant Maldive islands received full

equidistance treatment in the southern sector of the delimitation

467 CCM, paras. 9.47-9.55.

254despite the fact that they lay opposite a much longer, continental
468
coast of India. This can be seen on Figure R-7.4.

7.38. Nicaragua argues that the Maldives do not bear any
resemblance to the San Andrés Archipelago because the

Maldives are a “tightly knit group of islands”. 469 This is not

borne out by the geographic facts, including the nature of the

atolls that provided basepoints on the Maldives side for the

equidistance boundary.

7.39. The Maldive atolls are almost all less than two metres

above water – indeed, the Maldives is the lowest lying country

in the world – and most of the islands have fringing coral reefs

and sandbars, and can be walked across in just ten minutes.

Many of the small islands situated within the atolls are
uninhabited. Less than one-third of one percent of the area

covered by the Maldives is actual land territory (a total of 115

square miles stretching over some 500 miles). Notwithstanding

this, the boundary between the northernmost of the Maldives

and the mainland coast of India was still agreed to be the median
line.

(ii) Australia-NeC waledonia

7.40. The Nicaraguan Reply concedes that the delimitation

between Australia and New Caledonia is mostly effected

468
469 CCM, para. 9.47.
NR, para. 6.118.

255between a number of small islands. Nonetheless, the Reply goes

on to assert that the mainland coasts of both States were treated
470
broadly equally in the boundary agreement.

7.41. This assertion is misleading. The mainland coast of

Australia and the main island of New Caledonia are separated

by well over 400 nautical miles (actually some 600 nautical

miles) as can be seen on Figure R-7.5. Those coasts played no

role in the delimitation because of the distances involved, just as

the mainland coast of Colombia has no role to play here. As

Article 1 of the delimitation agreement makes clear, the

boundary was delimited between a number of small French and

Australian islands situated between the two main coasts, not
471
between those coasts themselves. As Charney and

Alexander’s study concludes:

“Thus, the usual geographic factors such as
coastal configuration, concavities, or the general

direction of the coasts were not the question 472
the delimitation of the instant boundary.”

(iii) India-Thailand

7.42. The Nicaraguan Reply has no answer to this example of

State practice other than to assert (without any demonstration)

470
471 NR, para. 6.119.
J. Charney and L. Alexander eds., International Maritime
Boundaries, Vol. I, p. 911. The Charney and Alexander study notes that the
single maritime boundary was “based mostly on equidistance”, and that it
“runs between a series of small islands or reefs on both sides”Ibid., pp.
906-907.
472 Ibid., p. 907.

257that “the geography of that delimitation again bears little

resemblance to the present case.” Notwithstanding this

contention, Nicaragua admits that the delimitation line, which

was based on equidistance, lies between the Nicobar Islands of
India, on the one hand, and certain islands of Thailand, on the

other, despite the fact that, as illustrated by Figure R-7.6 ,

behind the Thai islands lay the mainland coast of Thailand
473
which was not taken into account in the delimitation.

7.43. This is precisely Colombia’s point. Notwithstanding the

fact that there was a mainland Thai coast behind its islands

which faced islands belonging to another State (just as there is a

mainland Nicaraguan coast behind its own islands which face

Colombia’s islands), the delimitation still followed an

equidistance line between the two sets of islands. Colombia’s
methodology does the same thing.

(iv) AveIsland

7.44. The Nicaraguan Reply devotes more space to trying to

distinguish the treatment that Aves Island received in both the

United States (Puerto Rico and U.S. Virgin Islands)-Venezuela

(Aves) and France (Martinique and Guadeloupe)-Venezuela
474
agreements. Yet Nicaragua has no answer to the plain fact
that, in both agreements, the small island of Aves did receive

full equidistance treatment. Moreover, Nicaragua’s assertion

473
474 NR, para. 6.120.
NR, paras. 6.121-6.125.

259that, “there can be no doubt that giving full weight to the small

cay of Aves vis-à-vis the large islands of Guadeloupe and

Dominica [ sic] would not have been the outcome of a

delimitation effected by a third party”, is no more than pure
475
speculation. Clearly, the States concerned considered that
they were achieving an equitable result.

7.45. In addition to these agreements, there are a considerable

number of other examples of State practice discussed below that

show small islands being accorded full equidistance effect in

situations where they face longer mainland coasts, as well as in

cases where they lie between two mainland coasts that are
separated by less than 400 nautical miles.

(v) Sao Tome and Principe-Equatorial Guinea/Gabon

7.46. Sao Tome and Principe has entered into maritime

boundary agreements with both Equatorial Guinea and Gabon.

The delimitations in question are illustrated on Figure R-7.7.
476
Both were based on equidistance/median line principles.

7.47. In the Sao Tome and Principe/Equatorial Guinea
agreement, the small island of Principe was not enclaved, but

rather received full equidistance effect vis-à-vis both the longer

mainland coast of Equatorial Guinea and the coast of the large

475 NR, para. 6.125.
476 See, International Maritime Boundaries, Vol. IV, p. 2647 for the

1999 Sao Tome and Principe/Equatorial Guinea Agreement, and Vol. V, p.
3683 for the 2001 Sao Tome and Principe/Gabon Agreement.

261island of Bioko. This was in spite of the fact that the distance
between the islands of Sao Tome and Principe and the territory

of Equatorial Guinea was much less than 200 nautical miles. 477

7.48. In the Sao Tome and Principe/Gabon agreement, the

boundary is also an equidistance line between the islands of Sao

Tome and Principe and the long mainland coast of Gabon. Once

again, neither island was enclaved, as Nicaragua argues should

be the case for Colombia’s islands, despite the fact that both Sao

Tome and Principe lie less than 200 nautical miles off the

Gabonese coast.

(vi) CapVeerde-Senegal/Mauritania

7.49. The maritime boundaries between the Cape Verde

Islands and the opposite mainland coasts of Senegal and
Mauritania are both based on equidistance as referred to in the

relevant treaties.478 In fact, as Figure R-7.8 shows, which is

based on the map appearing in International Maritime

Boundaries, if anything the Cape Verde islands received more

than full equidistance in the delimitation with Mauritania. 479

477
In the southern sector of the boundary, the delimitation was also a
median line between the island of Sao Tome and the small Equatorial Guinea
island of Annobon.
478 See, International Maritime Boundaries, Vol. III, p. 2287 for the
1993 Agreement between Cape Verde and Senegal, and Vol. V, p. 3702 for
the 2003 Agreement between Cape Verde and Mauritania.
479 Ibid., Vol. V, p. 3701.

263 (vii) Dominican Republic-United Kingdom (Turks &
Caicos Islands)

7.50. Most of this agreement concerned the maritime area

lying between the very small Turks Islands and the much longer

coast of the Dominican Republic as can be seen on Figure R-

7.9. Despite the fact that the distance separating the relevant
coasts of the parties was less than 100 nautical miles, the

boundary neither enclaved the Turks Islands, nor “wrapped

around” those islands as Nicaragua argues should be the case for

Colombia’s islands under its fall-back position. The
delimitation line departed very marginally from a strict

equidistance line, but otherwise accorded the Turks and Caicos

extensive maritime projections to the north, east and south (on

the west, the islands faced Great Inagua Island belonging to the
480
Bahamas).

(viii) Indonesia-Malaysia (Straits of Malacca)

7.51. In this example of State practice, illustrated on Figure

R-7.10, the delimitation did fall primarily between the opposite

and broadly equivalent mainland coasts of Malaysia and

Sumatra which lay less than 400 nautical miles apart. However,
two small Malaysian islands (Palak and Jurak) situated well off

the Malaysian coast were accorded a full equidistance treatment

480 J. Charney and L. Alexander eds., International Maritime
Boundaries, Vol. III, pp. 2235-2241.

265for purposes of the boundary line, and were not enclaved or
481
even partially enclaved.

(2) R EGIONAL PRACTICE IN THE SOUTHWEST C ARIBBEAN

7.52. The Colombian Counter-Memorial also reviewed in

some detail a number of delimitation agreements concluded by

all of the other riparian States bordering the southwest

Caribbean Sea. These include agreements that Colombia has
signed with Panama, Costa Rica, Jamaica, Honduras, Haiti and

the Dominican Republic. Only the agreement with Costa Rica

has not been ratified by Costa Rica’s Legislative Assembly.

However, as Colombia pointed out in its Counter-Memorial,

and as is confirmed in Costa Rica’s Application to Intervene,

both Parties have complied with the Agreement in good faith for
482
some 33 years.

7.53. These agreements were premised not only on the fact

that Colombia was sovereign over al l the islands at issue in this

case, but also on the belief that Colombia’s islands were by and

481 J. Charney and L. Alexander eds., International Maritime

482ndaries, Vol. I, p. 1021.
CR, Vol. II, Annexes 1-3: Diplomatic Note DM 14082-2000 from
the Minister of Foreign Affairs of lombia to the Minister of Foreign
Affairs of Costa Rica, 29 May 2000 (An nex 1); Diplomatic Note DM 073-
2000 from the Minister of Foreign Affai rs of Costa Rica to the Minister of
Foreign Affairs of Colombia, 29 May 2 000 (Annex 2); Report to Congress
by the Minister of Foreign Affairs of Costa Rica, 2000-2001 (Annex 3). See
also, Costa Rica’s Application to Intervene, p. 1; CCM, para. 8.41 and CCM
Annex 17.

267large entitled to receive full equidistance treatment for
delimitation purposes. 483

7.54. Nicaragua’s Reply exhibits an acute sensitivity to these

agreements which Nicaragua asserts “form part of her

[Colombia’s] policy to hem in Nicaragua’s maritime zones by
484
the 82°W meridian”. Nicaragua also contends that State

practice is not relevant for the delimitation of maritime

boundaries with another State that is not a party to those
485
bilateral agreements. The first part of this argument is

erroneous; the second misunderstands the relevance of the
agreements in question.

7.55. As for the contention that Colombia’s boundary

agreements with its neighbours form part of a policy to hem

Nicaragua in by the 82°W median, the fact of the matter is that

none of the agreements with either Panama, Costa Rica or

Jamaica have anything to do with the 82°W meridian and that

meridian is not mentioned in the agreements. Nicaragua also

ignores the fact that these agreements were not simply the
product of Colombia’s initiatives; they also involved the

considered position of the other riparian States with respect to

what constituted an equitable boundary in the geographic

circumstances characterizing this part of the Caribbean.

483 See e.g., CR, Vol. II, Annex 3; CCM, Chapter 4, Section F, and
paras. 8.34-8.56.
484 NR, para. 7.27.
485 NR, para. 7.28.

2687.56. The 1976 Colombia-Panama agreement covers areas

lying exclusively to the south and east of the islands of
Alburquerque, San Andrés, East-Southeast Cays, Providencia

and Roncador. The westernmost point on the boundary line lies

on the 81°15’W meridian, not the 82°W meridian.

7.57. It is telling that Nicaragua never protested this
agreement. This is entirely consistent with Nicaragua’s total

lack of interest in areas lying to the east of the islands mentioned

above until it initiated these proceedings. Now, of course, it

claims extended continental shelf rights over the very areas

covered by the Colombia-Panama agreement. Where, it might
be asked, was Nicaragua during the 25 years between the date

when the Colombia-Panama agreement was concluded and the

filing of Nicaragua’s Application?

7.58. The 1977 Colombia-Costa Rica delimitation agreement,
which has been fully respected by both Colombia and Costa

Rica, also has nothing to do with the 82°W meridian. Once

again, the agreement in question makes no mention of that

meridian, and the westernmost segment of the boundary actually
486
extends along the 82°14’W meridian which is further west.

7.59. As for the 1993 agreement between Colombia and

Jamaica, a mere glance at the map reveals that it only concerns

areas lying in the vicinity of the Serranilla Cays and Bajo Nuevo
486
See, CCM, paras. 4.152-4.153, Annex 5 and Figure 4.3; CR Figure
R-5.5.

269– including the establishment of a Joint Regime Area – far away

from the 82°W meridian or from Nicaragua.

7.60. In fact, the only bilateral agreement that makes mention

of the 82°W meridian is the Colombia-Honduras agreement

where that meridian forms the western endpoint of the line.
However, there are also two other segments of that agreement

covering areas north of the 15°N parallel that lie to the west and

southwest of Serranilla and also to its north.

7.61. As for Nicaragua’s argument that these agreements are

not relevant because it is not a party to them, this misses the

point. Regardless of the fact that Nicaragua is not a party, the
agreements in question comprise a body of regional State

practice evidencing the fact that the other States in the region do

not subscribe to Nicaragua’s enclave theory and that for the
most part, Colombia’s islands have been accorded full effect.

D. Conclusions

7.62. When considered along with the other examples of State

practice that have been discussed above, what stands out is the

fact that Nicaragua cannot cite a single example of State practice
where islands have been enclaved in the way that Nicaragua

now argues that Colombia’s islands should be here. Moreover,

the jurisprudence that Nicaragua cites in the form of the France-
Canada and Anglo-French arbitrations relates to geographic

270circumstances that are vastly different from the relevant

geographic facts in this case.

7.63. In contrast, Colombia has shown that even small islands
have often been accorded a full equidistance effect. This is

evident by State practice generally and in this part of the

Caribbean in particular. Moreover, in cases such as Jan Mayen
and Libya-Malta, islands have been accorded a significant

equidistance effect that bears no relation to Nicaragua’s novel

enclave theory.

271 Chapter 8

REFLECTING THE RELEVANT

CIRCUMSTANCES

A. Introduction

8.1. In Chapter 6, Colombia canvassed the legal authorities

which stand for the principle that maritime delimitation involves
a two-step process: first, plotting the provisional equidistance

line; second, consideration of the relevant circumstances to

assess whether they justify an adjustment being made to the

provisional line. Having set out Colombia’s position on the
appropriate methodology and criteria for establishing the

provisional equidistance line in Chapter 6, Colombia will now

turn to the relevant circum stances in order to ascertain whether
such circumstances confirm the equitable nature of Colombia’s

provisional line or warrant some degree of shifting of that line.

8.2. Before doing so, it is necessary to offer some comments

on Nicaragua’s approach to the notion of relevant circumstances

in order to place the Parties’ divergent positions on this issue in
perspective.

8.3. It is remarkable in this respect, that the new continental

shelf claim advanced in Nicaragua’s Reply makes no mention of
the role that relevant circumstances play in the case. Chapter III

273of the Reply, in which Nicaragua sets out its positive case under
the heading “The Delimitation of the Continental Shelf Area”,

does not include a single reference to relevant circumstances. In

fact, Nicaragua’s continental shelf claim does not even refer to

the first step in the process – the establishment of the

provisional equidistance line – let alone the second step.

8.4. For Nicaragua, the only factors that are relevant concern

the location of the outer limits of Nicaragua’s putative extended

continental shelf rights based on Article 76 of the 1982 Law of
the Sea Convention, and the limits of Colombia’s physical

continental shelf lying off its mainland coast. According to

Nicaragua, nothing else matters other than the equal division of

these alleged overlapping continental margins. In short,
Nicaragua’s case rests on geology and nothing but geology. As

discussed in Chapter 4, such an approach bears no relation to the

law of maritime delimitation. Nor does it reflect the maritime

entitlements (both continental shelf and EEZ) that Colombia’s

islands give rise to in their own right, the presence and interests
of third States in the region or the other relevant circumstances

characterizing the area that are discussed in this Chapter.

8.5. The only place where Nicaragua purports to address the
“relevant circumstances” is in Chapter 6 of the Reply where

Nicaragua takes issue with Colombia’s delimitation line. 487

There, Nicaragua’s contends that there are no relevant

487 NR, para. 6.84 and paras. 6.131-6.146.

274circumstances that justify an adjustment being made to its so-

called “provisional lines” which are actually no more than its

three- and twelve-mile enclaves around Colombia’s islands.
Not only are these “provisional lines” incompatible with the

legal precepts discussed earlie r in this Rejoinder, they fail to

take into account the relevant conduct of the Parties, the
geographic circumstances that characterize the area and the way

in which third States in the region have recognized the legal

entitlements generated by Colombia’s islands in bilateral
delimitation agreements.

B. The Absence of Any Nicaraguan Presence in the
Waters of the San Andrés Archipelago

8.6. Nicaragua cannot point to any presence at any time

either on Colombia’s islands at issue in the present case, or
within the maritime areas ly ing between those islands.

Moreover, Nicaragua has not produced any evidence that it

sought to exercise jurisdiction over the waters lying within the

San Andrés Archipelago or to act in a constructive manner by
enacting fish conservation or anti-pollution measures, or in

undertaking security operations to interdict drug trafficking in

this area.

8.7. In short, whatever Nicaraguan maritime activities of an

official nature that exist in th e delimitation area are limited to
isolated episodes of relatively recent vintage that either fall

close to the 82°W meridian or, for a short period at the end of

275the 1960’s and early 1970’s, were located around Quitasueño

when Nicaragua issued oil exploration permits in that area all of
488
which were promptly protested by Colombia. As to areas
lying further east – for example, east of the islands of San

Andrés, Providencia, Santa Catalina, Alburquerque and

Quitasueño or between those islands – there is nothing; no

evidence of any Nicaraguan State activities of any kind either

with respect to resource management, conservation measures or

maintenance of safety and security.

8.8. In contrast, not only has Colombia acted à titre de

souverain with respect to each of the islands of the
489
Archipelago, it has also been the sole Party to regulate

fishing, implement conservation measures, operate lighthouses

and beacons, carry out naval patrols, interdict drug trafficking,
publish maritime charts, engage in marine scientific research,

and otherwise exercise jurisdiction over all the waters lying

within Colombia’s exclusive economic zone between the islands

comprising the San Andrés Archipelago - that is, from Bajo

Nuevo in the northeast, to Alburquerque in the southwest.

8.9. While this was fully documented in the Colombian

Counter-Memorial, the relevant facts may be summarized as

follows:

x Appendix 7 to Volume II-B of the Counter-Memorial

488
489 See CCM, Annexes 54-59.
See para. 1.4 and Chapter 2, above, in particular, paras. 2.22, 2.88-
2.89.

276 tabulates 163 individual naval operations that Colombia
has carried in the waters of the San Andrés Archipelago

which include routine patrols as well as drug interdiction

operations carried out by Colombian naval forces and in

conjunction with third States.

x Appendix 5 to Volume II-B lists 91 instances where
Colombia has licensed fishing vessels for operations in

the waters of the San Andrés Archipelago. These

include numerous vessels flying the flag of Nicaragua, as

well as those flagged by the United States, the United

Kingdom, Russia, Honduras, Jamaica, Belize,

Venezuela, the Dominican Republic, Cayman Islands
490
and Panama.

x Various scientific surveys have also been commissioned

by Colombia throughout the waters lying between the

islands comprising the Archipelago. These include

geodetic controls, hydrographic surveys and

geomorphological, oceanographic, meteorological and

chemical studies of the waters and the seabed for
491
purposes of protecting the living resources of the area.

490
Also tabulated in Appendix 6 to Volume II-B of the Colombian
Counter-Memorial are arrangements made with US vessels for fishing
around Quitasueño, Serrana and Roncador. For examples of fishing permits
granted by the Colombian authorities, see also, e.g., CCM Annexes 147, 148,
150, 153, 156, 169, and, in particular, Annexes 163, 166, 167, 168
concerning Nicaraguan fishing vessels.
491 CCM, Appendices 10 and 12, Vol. II-B.

277 x Colombia has also listed in its Counter-Memorial all the
nautical charts it has issued for the islands and the waters

of the Archipelago. 492

8.10. Nicaragua is clearly conscious of its total absence from

any of the waters lying within the San Andrés Archipelago and

thus tries to excuse its lack of presence in this area on the

grounds that, while effectivités can have a role to play in cases

involving territorial disputes, such roles “have not been
493
generally accepted in cases of maritime delimitation.”

8.11. In considering this argument, it must be recalled that, as

early as the 1969 North Sea cases, the Court stated the

following:

“[T]here is no legal limit to the considerations
which States may take account of for the purpose
of making sure that they apply equitable
procedures, and more often than not it is the

balancing-up of all such considerations that will
produce the result rather than reliance on one to
the exclusion of others. The problem of the
relative weight to be accorded to different

considerations naturally varie494ith the
circumstances of the case.”

492 CCM, Appendix 11, Vol. II-B.
493 NR, para. 7.17.
494 North Sea Continental Sh elf, Judgment, I.C.J. Reports 1969, p. 50,
para. 23.

2788.12. In the Tunisia-Libya case, the Court also adverted to the

principle that: “Historic titles must enjoy respect and be
495
preserved as they have always been by long usage.”

8.13. As the Court pointed out, the notion of historic rights or
historic waters did clearly apply in a maritime context even

though distinct legal regimes govern the question of historic

rights as opposed to continental shelf rights under customary

international law. In the Court’s words:

“The first régime is based on acquisition and

occupation, while the second is based on the 496
existence of rights ‘ipso facto and ab initio’.”

8.14. Colombia has effectively exercised jurisdiction over all

of the waters lying within the San Andrés Archipelago for a

considerable period of time. Colombia has been the only State

to carry out economic and regulatory activities in these waters in

an open and transparent manner, and vessels of numerous other

States, including a number of ships flying the Nicaraguan flag,
have recognized Colombia’s jurisdiction in this area by applying

for and being granted fishing permits.

8.15. The Nicaraguan Reply labours under the mistaken

impression that Colombia is relying on this state of affairs for

the identification of specific line of delimitation. Nicaragua

495 Continental Shelf (Tunisia/Libyan Arab Ja mahiriya), Judgment,
I.C.J. Reports 1982, p. 73, para. 100.
496
Ibid., p. 74, para. 100. Of course, occupation is a form of
effectivités.

279consequently argues that there is no “tacit agreement” with
respect to any particular line in the manner addressed in the

Court’s judgment in the Nicaragua-Honduras case, and that no

line – such as the 82°W meridian – has been recognized in
497
practice.

8.16. The relevance of the 82°W meridian will be discussed in

the next section. For present purposes, it must be recalled that

Colombia does not rely on the absence of any Nicaraguan

presence in the waters lying between Colombia’s islands or on
Colombia’s exercise of jurisdiction in these waters for purposes

of establishing a particular delimitation line. Colombia’s

delimitation line is based on application of the equidistance-

relevant circumstances rule. However, it is also axiomatic that
maritime delimitation involves the application of equitable

principles and that the overall aim of delimitation is to achieve

an equitable result. It is entirely appropriate to test the

delimitation claims put forward by the Parties by reference to

the touchstone of equity (applied infra legem) and in the light of
all the relevant circumstances, including the conduct of the

Parties with respect to the areas in dispute in fields such as

resource management, control of contraband and marine

scientific research.

8.17. Nicaragua’s continental shelf claim, as well as its fall-

back position calling for a delimitation line that accords

497 NR, paras. 7.14-7.15.

280Nicaragua a full 200-nautical mile exclusive economic zone,

both fall within an area where Nicaragua has never had any

presence of any kind. A delimitation line that amputates areas

where Colombia has a long-standing track record of exercising

jurisdiction in a constructive manner, but where Nicaragua can
show nothing, cannot be said to accord with equitable principles

or to produce an equitable result that will contribute to the

maintenance of peace and stability in the region.

C. The Relevance of the 82°W Meridian

8.18. The Nicaraguan Reply argues that Colombia fails to take
into account the Court’s Judgment on the Preliminary

Objections in so far as the relevance of the 82°W meridian is

concerned. 498 Of course, Colombia’s Counter-Memorial had

already indicated that it was mindful of the Court’s finding that:

“115. The Court considers that, contrary to

Colombia’s claims, the terms of the Protocol...
[are] more consistent with the contention that the
provision in the Protocol was intended to fix the
western limit of the San Andrés Archipelago at
nd 499
the 82 meridian.”

That is why Colombia has formulated its claim both in its

Counter-Memorial and in this Rejoinder by reference to

customary international law and the two-step delimitation

process discussed earlier. As Colombia has also pointed out,

498 NR, Chapter VII.
499
Territorial and Maritime Dispute (Nic aragua v. Colombia),
Preliminary Objections, Judgment of 13 December 2007, p. 34, para. 115.

281however, this does not preclude the 82°W meridian from

constituting a relevant circumstance to be considered at the

second stage of the delimitation exercise in order to achieve an
500
equitable result.

8.19. Notwithstanding this, the Nicaraguan Reply continues to

take aim at a false target by accusing Colombia of “using the

82°W meridian at each possible stage of the process of

establishing the maritime border between the Parties, when its

only real purpose was circumscribing the extent of the
501
Archipelago.”

8.20. This is a distortion of Colombia’s position. Unlike

Nicaragua, following the Court’s Judgment, Colombia based its

position on the equidistance-re levant circumstances rule in

conformity with well-established principles of international law.

The plotting of the equidistance line obviously has nothing to do

with any particular meridian of longitude, but rather is based on
objective criteria – namely, the relevant basepoints on the

Parties’ opposite coasts. Nor, as Colombia explained in its

Counter-Memorial, does the provisional line require any

adjustment in the light of the relevant circumstances. Rather,

the relevant circumstances (including the significance of the

82°W meridian as the western limit of the San Andrés
Archipelago and as the limit to the areas in which the Parties’

500
501 CCM, paras. 9.60-9.64.
NR, para. 7.8.

282exercised their respective jurisdiction) confirm the equitable

nature of the provisional equidistance line.

8.21. For evident reasons, the equidistance line does not

coincide with the 82°W meridian since the former is a function

of basepoints located on the Parties’ coasts while the latter is a

line of longitude. The course of the equidistance line can be
seen on Figure R-8.1 facing this page. The southern three-

quarters of the line lies somewhat to the west of the 82°W

meridian because it is controlled by basepoints on San Andrés

Island, Providencia, Santa Catalina and Alburquerque, on the

one hand, and the Islas Mangles (Corn Islands) and Roca Tyra,
on the other. The northern part of the line actually falls

somewhat to the east of that meridian as a result of the

basepoints on each Party’s coasts. This is no more than the

product of nature and the relevant coastal geography of the

Parties which are the key elements in the establishment of any
equidistance line.

8.22. Given that Colombia’s position has been formulated by

reference to established legal principles, Nicaragua’s

intemperate characterization of that position as “preposterous” is
out place.502

nd
8.23. Having wrongly criticized Colombia for “using the 82

meridian at each possible stage of the process”, Nicaragua also

502
NR, p. 15, para. 33.

283contradicts itself by complaining that, by its “newly fashioned”
median line, “Colombia seeks to acquire more maritime space

than she had ever claimed before, including in her earlier

pleadings before this Court.” 503 Apparently, Colombia is

damned when she relies on the 82°W meridian and damned

when she does not.

8.24. The fact of the matter is that the position expressed in

Colombia’s Counter-Memorial respects the delimitation

methodology articulated by the Court and by arbitral tribunals,
while Nicaragua’s position does not. It ill-behooves Nicaragua

to complain that Colombia is now claiming more when

Nicaragua itself – and, unlike Colombia, without the slightest

justification based on the Court’s Judgment on the Preliminary
Objections – has introduced a brand new continental shelf claim

that had never seen the light of day before the filing of its Reply

(and which still has not seen the light of day as far as the United

Nations Commission is concerned), and which lies 100 nautical

miles to the east of Nicaragua’s already exaggerated, original
single maritime boundary claim.

8.25. With respect to the role of the 82°W meridian as a

relevant circumstance to be taken into account at the second
stage of the delimitation process, this revolves around two main

factors.

503 NR, para. 6.8.

2858.26. The first is based on the premise that, while not effecting

a general delimitation between the Parties, the 82°W meridian

does fix the western limit of the San Andrés Archipelago as the
504
Court held in its Judgment on the Preliminary Objections.
505
This is a proposition with which Nicaragua agrees. That
being the case, it is entirely natural that the delimitation should

fall generally between the western limit of the Archipelago as

defined in the 1928/1930 Treaty, on the one hand, and

Nicaragua’s territory, on the other. This is what the

equidistance line achieves; it f alls between the limits of the

territory of both States.

8.27. The fact that the 82°W meridian lies in the same general

area as the equidistance line – i.e., between the relevant and

opposite coasts of the Parties – confirms the overall

equitableness of the equidistance line as the appropriate

delimitation. What would not be compatible with the

1928/1930 Treaty would be a delimitation line lying to the east
of Colombia’s islands that results in Nicaragua having sovereign

rights within areas that fall inside the limits of Colombia’s

Archipelago and between its islands. This is a matter that the

Nicaraguan Reply fails to grapple with.

8.28. The second relevant factor concerns the manner in which
the Parties have exercised their sovereign rights in the area

504 Territorial and Maritime Dispute (Nic aragua v. Colombia),

505liminary Objections, Judgment of 13 December 2007, p. 34, para. 115.
NR, para. 7.3.

286based on their control and interdiction of fishing vessels and in

taking other lawful measures relating to safety and security.

8.29. Nicaragua’s pleadings tell an incomplete and thus

distorted story when it comes to this issue. Nicaragua argues

that Colombia has imposed the 82°W meridian as a limit by
506
force. The Reply goes so far as to append a separate section

requesting the Court to declare that Colombia is not acting in
accordance with its obligations under international law in this

respect. 507 The unfounded nature of Nicaragua’s request for a

“Declaration” will be addressed in Chapter 9 below. For present

purposes, it is necessary to correct the one-sided version of

events that Nicaragua has presented.

8.30. While the Nicaraguan Reply asserts that “the Colombian

military forces have imposed unlawful restrictions on
nd
Nicaragua’s exercise of her own sovereignty east of the 82
508
meridian”, it fails to point out that its own forces have also

intercepted and detained Colombian vesse ls within the same

area to the west of Quitasueño. There are five such incidents

recorded in the annexes which Nicaragua filed with its
509
Memorial. Each of these was protested by Colombia. But the

significant aspect of this element of the conduct of the Parties is

506
507 NR, para. 7.26.
508 NR, p. 237, para. 8.
509 NR, para. 7.16.
NM, Annexes 49-50, 53, 55 (referring to two incidents) and 57.

287that all of these incidents occurred either on the 82°W meridian

or within a few miles of it.

8.31. Figure R-8.2 depicts in red the locations where
Nicaragua has intercepted or detained Colombian vessels

operating in the area, and in green locations where Colombia

has stopped private vessels fishing in contravention of
Colombian law. It can be seen that all of these incidents have

occurred on or close to the 82°W meridian in the northeastern

part of the relevant area between Quitasueño and the opposite

Nicaraguan islands.

8.32. Nicaragua never carried out any naval patrols or engaged

in monitoring foreign vessels east of San Andrés Island,
Providencia or Quitasueño or south of Alburquerque and East-

Southeast Cays. This is consistent with Nicaragua’s total

absence from this area. Instead, its concerns have centered

precisely around the 82°W meridian. As for Colombia’s
practice, since there were no Nicaraguan flagged vessels ever

operating east of the islands without having received a

Colombian permit, interdiction activities of the Colombian
Navy have also taken place in areas lying between the 82°W

meridian and Quitasueño, as can be seen on the map.

8.33. The picture that emerges is that the only area which, as a
practical matter, has given rise to disputes between the Parties is

the area lying between the north-westernmost of Colombia’s

288islands and Nicaragua along or next to the 82°W meridian. In
addition to constituting the western limit of the San Andrés

Archipelago, the 82°W meridian is also a relevant circumstance

in so far as it confirms where the genuine area of dispute lies in

which the delimitation falls to be established - the area between

the Parties’ relevant coasts. This is where the equidistance line
lies.

D. Resource and Security Factors

(1) R ESOURCE MANAGEMENT AND CONTROL

8.34. Nicaragua acknowledges that “since the North Sea

Continental Shelf cases, it has been recognized that the

incidence of natural resources in the disputed area may
510
constitute a relevant circumstance affecting a delimitation.”
With the adoption of the regime of the exclusive economic zone,

preservation of the living resources situated within the EEZ has

become more important, and a coastal State now possesses

sovereign rights not only to explore and exploit the natural

resources in the EEZ, but also the right – and, indeed, the
obligation – to conserve and manage those resources.

8.35. The waters of the San Andrés Archipelago lying east of

the 82°W meridian host a fragile ecosystem where the over-
fishing of certain species is a major concern. Unlike Nicaragua,

Colombia has taken a number of concrete steps, both by itself

510 NM, para. 3.60.

290and in conjunction with other States, to preserve and protect the

living resources of these waters. These measures are

documented in Colombia’s Counter-Memorial. Since they have

been ignored in Nicaragua’s Reply, it is appropriate to

summarize them here if only to underscore the fact that
Colombia has been, and continues to be, the sole Party in this

case that is effectively managing the living resources of the area.

8.36. In the first place, Colombia’s delimitation agreements

with its neighbours emphasize the importance placed by the

parties to those agreements on the preservation of the ecosystem

of this part of the Caribbean. For example, the 1976 Agreement
between Colombia and Panama, records -

“The adoption of satisfactory measures for the
preservation, conservation and exploitation of the
existing resources in those waters and the
prevention, control and elimination of pollution
511
therein to be in their mutual interest.”

8.37. The 1977 Agreement between Colombia and Costa Rica

evidences a similar concern. No less than four articles (Articles

III, IV, V and VI) set out the Parties’ agreement to coordinate

and co-operate in enacting preservation measures relating to

species that migrate beyond their respective jurisdictions and to
control pollution and exchange scientific research. 512

511
512 CCM, Annex 4, p. 27.
CCM, Annex 5, pp. 32-33.

2918.38. With respect to States outside of the region, on

8September 1972 Colombia and the United States concluded a

treaty pursuant to which the United States renounced any claims
513
to sovereignty over Quitasueño, Roncador, and Serrana. By
Article 3 of the Treaty, United States’ nationals and vessels

were granted the right to continue to fish in the waters of

Quitasueño, Roncador and Serrana, subject to reasonable

conservation measures applied by the Government of Colombia

in accordance with an Exchange of Notes of the same date. 514

The parties also agreed to exchange views periodically on the

desirability of bilateral or mu ltilateral action of a conservation
515
nature.

8.39. In implementation of this agreement, on 24 October and

6 December 1983, Colombia and the United States conducted a

further Exchange of Notes, where by they agreed that the latter
would provide annually to Colombia a list of U.S. fishing

vessels which intended to fish in the areas covered by the 1972

Agreement. 516 Such vessels were required to report their arrival

in and departure from such areas to Colombian authorities and

to provide a statement regarding the quantity and species of their

catch.

513
514 CCM, paras. 4.52-4.56 and Annex 3.
CCM, Annex 3, pp. 18-20.
515 CCM, Annex 3, pp. 18-20.
516 CCM, Annex 8.

2928.40. Further consultations on conservation measures took

place between the signatories to the 1972 Treaty in January

1987 resulting in the issuance of a Joint Statement on

23January 1987. The Joint Statement voiced concern over the
depletion of certain species, particularly conch, in the waters

around Quitasueño, and agreed on a temporary ban on the taking

of conch within the area described in paragraph 5 of the 1983
517
Exchange of Notes relating to Quitasueño.

8.41. Those actions were followed on 6 October 1989 by the

adoption of Agreed Minutes pursuant to which the Colombia

and the United States agreed to continue the temporary ban on

conch fishing around Quitasueño, to adopt a three month closed

season (from 1 July through 30 September of each year) for

conch fishing in the waters adjacent to Roncador and Serrana,
and to prohibit the capturing of spiny lobsters of less than a

specified size. A ban on factory vessels operating in the treaty
518
waters was also agreed.

8.42. Further regulations were adopted by the Colombian
Ministry of Agriculture in 1990. These extended the fishing ban

for conch in the area of Quitasueño between the 14° to 14°40’N

latitudes and the 81° to 81°30’W longitudes. With respect to the

rest of the area of the San Andrés Archipelago, the regulations

imposed a closed season on conch fishing generally during the

months of July through September as well as a ban on the
517
518 CCM, Annex 11.
CCM, Annexes 12 and 13.

293possession of conch weighing less than 225 grams. A size
limitation was also placed on the capture of spiny lobsters

throughout the Archipelago, and a restriction imposed on the

use of certain kinds of dive equipment and nets, and on fishing

operations carried out by factory ships. 519

8.43. Pursuant to an Agreed Minutes between Colombia and

the United States dated 18 May 1994, the United States

authorized the Navy and Coastguard of Colombia to board U.S.

vessels to verify compliance with conservation regulations, in

exercise of its jurisdiction with respect to fishing in the San
Andrés Archipelago. This was confirmed by a Diplomatic Note

dated 6 August 1996. 520 The parties also agreed to create an ad

hoc scientific group to discuss data relating to fishing activities

reported by the delegations of both countries and to develop an

action plan for evaluating the fishing resources of the area and
521
problems threatening their sustainable development.

8.44. Colombia also entered into fishing agreements with

Jamaica in 1981 and 1984 under which Jamaican fishing vessels
were accorded the right to undertake fishing activities in areas

around the Serranilla Cays and Bajo Nuevo. The agreements

specified the particular species of fish that such vessels were

authorized to catch, the size of vessels that were allowed to fish

and the maximum annual catch that was permitted. They also

519 CCM, Annex 151.
520 CCM, Annex 68.
521 CCM, Annex 15.

294obligated crew members of Jamaican vessels to obtain

identification cards issued by the Colombian Consulate in

Jamaica. 522

8.45. Colombia and Jamaica also agreed a Joint Regime Area

in their 1993 Maritime Delimitation Treaty as depicted on

Figure R-5.5 at page 188. Amongst other things, the 1993
Agreement provided that the parties would adopt measures

relating to marine scientific research, the protection and

preservation of the marine environment and conservation of the

living resources within the Joint Regime Area. 523

8.46. The evidence thus shows that Colombia has consistently

exercised sovereign rights over the management and

conservation of the living resources located within its exclusive
economic zone in the waters of the San Andrés Archipelago.

For its part, Nicaragua has produced no evidence that it engaged

in any similar activities in maritime areas lying east of the 82°W

meridian, or between Colombia’s islands, despite the fact that,

as a party to the 1982 Convention on the Law of the Sea,

Nicaragua was under an obligation to: (i) determine the

allowable catch of the living resources within areas claimed to

form part of its EEZ (Article 61(1)), (ii) ensure through proper
conservation and management the maintenance of those living

522 CCM, Annexes 7 and 9, in pa rticular Articles III and VIII(d)
thereof; also, second para. in preamble of Annex 9 in reference to two-year
renewal in 1982 of the 1981 Agreem ent, pursuant to Art. XIV. See also,
CCM Annexes 63 and 64.
523 CCM, Annex 14.

295resources so that they were not endangered by over-exploitation

(Article 61(2), and (iii) promote the optimum utilization of such

resources (Article 62).

8.47. In its Reply, Nicaragua attempts to excuse its inaction by

asserting that Nicaragua was under “special constraints” in
524
furnishing the Court with information on these matters. To

this end, Nicaragua argues that it has been unable to explore the

area and thus to be able to provide the Court with a full study of
the resources in question. 525 However, this does not excuse

Nicaragua’s inaction because, if it had considered it had rights

over that area, it should have at least issued relevant legal and

administrative regulations.

8.48. At the State level, there is no evidence Nicaragua ever
attempted to carry out any m arine scientific research in the

maritime areas it now claims. Nor did Nicaragua produce any

laws or regulations dealing with the protection of the living

resources situated therein. There are no grounds for blaming

this inactivity and lack of interest on Colombia. In short,
Nicaragua complains that its rights have been infringed, but

unlike Colombia it never sought to implement such rights in

practice and it never respected the obligations it was putatively

under to conserve and manage the resources of the areas which

it now asserts should form part of its exclusive economic zone.

524
525 NR, para. 6.136.
NR, para. 6.138.

2968.49. Nicaragua also overlooks the documentary evidence that

Colombia has produced showing that Nicaraguan flagged

vessels have frequently applied for and been granted permits by

Colombia to fish in the waters of the San Andrés Archipelago
subject to complying with Colombia’s conservation measures.

Annexes 139, 140, 163, 166, 167, 168 and 169 to Colombia’s

Counter-Memorial contain specific permits granted to

Nicaraguan flagged vessels to this effect.

(2) C OLOMBIA ’S UNDERTAKING OF SECURITY MEASURES

8.50. With respect to Colombia’s undertaking of security
operations throughout the waters lying within the San Andrés

Archipelago, Nicaragua’s Reply raises two arguments. The first

is that Colombia has introduced “no evidence to support her
526
assertions”. The second is that, since the waters beyond the

territorial sea in the exclusive economic zone are not a zone of
sovereignty, Colombia has no right to exercise general “police”

powers or to interdict contraband unrelated to specific economic

rights she might enjoy in such areas. 527 The first argument is

simply wrong. The second mischaracterizes the relevant legal

context within which Colombia’s activities have taken place.

8.51. As for the questions of evidence, the Counter-Memorial

contains numerous documentary annexes attesting to

Colombia’s implementation of security measures in the waters

526
527 NR, para. 6.141.
NR, para. 6.142.

297of the Archipelago both with respect to controlling illegal

fishing and in connection with the interdiction of drug-running
and the transport of other contraband. 528 The former activity is

critical to the conservation and management of the living

resources in the area, as was discussed in the previous section.

The latter is of central importance not only to Colombia but to

the international community at large in the light of the fact that
this part of the Caribbean has been a route for illegal drug-

smuggling.

8.52. As noted above, Appendix 7 to Volume II-B of

Colombia’s Counter-Memorial contains a descriptive list of
some 163 individual naval operations that Colombia has

undertaken within the maritime areas falling within the San

Andrés Archipelago. These activities range from routine patrols

relating to surveillance duties, to fighting contraband and drug-

trafficking, controlling illegal fishing and generally exercising
sovereignty and sovereign rights over the islands and the

adjacent waters. Many of these were carried out unilaterally by

Colombia’s Naval forces; others were performed as part of

exercises carried out with other States, particularly the United

States.

8.53. With respect to joint Colombian-United States

operations, it will be recalled that, pursuant to the 1983

Agreement between those two States, the United States granted
528
See, e.g., CCM, Annexes 130- 132, 165, 209-214; Vol. II-B,
Appendices 7 and 8.

298to Colombian authorities the right to board United States

flagged vessels fishing in the areas covered by the 1972 Treaty
for purposes of inspecting the vessels’ documentation granting it

permission to fish in the area concerned. With the subsequent

increase in drug trafficking in the area, Colombia and the United

States expanded their joint interdiction efforts in 1997 by
529
concluding an Agreement to Suppress Illicit Traffic by Sea.

8.54. The 1997 Agreement applied to waters lying beyond the

territorial sea of any State and provided, in relevant part, that

each party would authorize the other party, on request, to board

and search one of its flagged vessels when either party had
reasonable grounds to suspect that the targeted vessel was

involved in illicit drug-trafficking. As such, the Agreement was

consistent with the obligations and goals set out in the 1988

United Nations Convention Against Illicit Traffic in Narcotic

Drugs and Psychotropic Substances to which Colombia is a
party and which is referred to in the Preamble of the 1997

Agreement. The Agreement also noted the parties’ agreement to

develop and share tactical information in order to track suspect

vessels or aircraft.

8.55. As the documentary annexes furnished by Colombia (but

ignored by Nicaragua) demonstrate, Colombia and the United

States have cooperated closely in implementing this Agreement

within the waters of the San Andrés Archipelago. For example,
529
Annex 4: 1997 Agreement to Suppress Illicit Traffic by Sea between
Colombia and the United States.

299Annex 165 to the Counter-Memorial contains an Operational

Order from the Colombian Navy Command for San Andrés and

the western bank of Quitasueño for purposes of detecting ships

engaged in illegal fishing activities, drug-trafficking, arms
trafficking and smuggling. The Order specifically instructed

those conducting the operation to apply the provisions of the

1997 Agreement with the United States. 530

8.56. The list of Colombian Naval operations included in

Appendix 7 to the Counter-Memorial records seven different

occasions where Colombian naval vessels collaborated with

their United States counterparts in drug interdiction activities
531
within the Archipelago’s waters. In addition, there are

numerous other listings relating to Colombian anti-narcotics
532
missions carried out without third party assistance. The

location of these operations show that they were carried out both
to the east and west of the main islands of San Andrés,

Providencia and Santa Catalina and to the south of Quitasueño.

8.57. Colombia has also engaged in numerous search and

rescue missions carried out by its naval forces in waters now

claimed by Nicaragua but where Nicaragua can show no similar

530
531 CCM, Annex 165, p. 576.
Both before and after th e 1997 Agreement, see the entries for
17/01/1986 (p. 195), 18/04/1995 (p. 212), 30/05/1998 (p. 229), 28/08/1998
(p; 230), 09/09/1998 (p. 231), 23/09/1998 (p. 231) and 13/01/1999 (p. 234) to
Appendix 7 to the CCM.
532 See relevant entries in CCM Ap pendix 7, pp. 199, 202-203, 207,
210, 212-213, 215-216, 218, 221-222, 227-228, 230-232, 234 and 237-239.

300conduct. Reference may be made to the following specific

examples:

x Search and rescue operations in August 1969 relating to
533
a towboat located southwest of Alburquerque;

x Investigation of a steamship which ran aground on a
534
shoal in the vicinity of Serrana in September 1971;

x Search and rescue in the vicinity of San Andrés Island in

June 1979 of a number of Nicaraguan vessels coming

535
from Nicaragua with refugees onboard;

x Search and rescue in September 1982 of a Nicaraguan

flagged vessel near Providencia; 536

x Search and rescue of a motorboat drifting near

Alburquerque in July 1983; 537

x Search and rescue of a sailboat near Quitasueño in June
538
1986;

x Assistance in October 1988 to the crew of a motorboat

apparently stolen by two Nicaraguan crewmembers to

escape that country, subsequently escorted to the 82°W
539
meridian by Colombian forces;

533
CAC135.
534CAC136.
535 CCM, Appendix 7, p. 185.
536 CCM, Appendix 7, p. 193.
537
538CAC145.
539CAC146.
CAC149.

301 x Assistance in August 1990 to a Nicaraguan flagged

vessel in distress west of Alburquerque; 540

x Search and rescue and logistical support in February

1991 between various of the Colombian islands; 541

x Search and rescue operations in April 1992 for a

motorboat which had declared an emergency at a

position about 150 nautical miles southwest of San

Andrés Island; 542

x Search and rescue operations carried out in July 1993

with respect to a motorboat south of San Andrés Island

and west of the East-Southeast Cays; 543

x Search and rescue operations carried out at Quitasueño in
544
June 1994;

x Search and rescue operations in the general area of the
545
Cays of the Archipelago in December 1994;

x Support to a vessel with motor problems around
546
Quitasueño in August 1997;

x Rescue of Honduran fishermen near Serranilla in

547
October 1997;

540CAC15,2.
541
542 CCM, Appendix 7, p. 203.
CAC15,5.
543CAC15,8.
544 CCM, Appendix 7, p. 209.
545 CCM, Appendix 7, p. 210.
546
547 CCM, Appendix 7, p. 222.
CCM, Appendix 7, p. 225.

302 x Various search and rescue operations carried out with

respect to Panamanian and Colombian flagged vessels in

December 1998 and January 1999 around and west of
Quitasueño; 548

549
x Aid to a vessel in the area of Quitasueño in May 1999;

and

x Rescue of a Honduran vessel that had caught fire in the

vicinity of Serrana in September 1999. 550

8.58. These incidents show a consistent presence of

Colombian naval forces in the waters of the Archipelago falling

to the east of the provisional equidistance line and east of the

82°W meridian and attest to their contribution to security and

safety in the region. Suffice it to note that Nicaragua cannot

point to a single competing activity undertaken in furtherance of

security in the same area.

8.59. Legally, Nicaragua’s assertion that Colombia has no

right to exercise general police powers to interdict contraband

unrelated to the specific economic rights she might enjoy in the

area is inconsistent with the position it took in its Memorial and

incorrect as a matter of law.

548
CCM, Appendix 7, p. 232-233.
549 CCM, Appendix 7, p. 235.
550 CCM, Appendix 7, p. 236.

3038.60. While Nicaragua’s Reply now tries to downplay the
relevance of security interests, it should be recalled that the

Nicaraguan Memorial took a different view. As stated in the

Memorial:

“International tribunals have given firm
recognition to the relevance of security

considerations to the assessmen551f the equitable
character of the delimitation.”

8.61. Under international law, as refl ected in Article 62 of the

1982 Convention, a coastal State is entitled to enact laws and

regulations not only dealing with licensing of fishermen, fixing

quotas of catch, regulating fishing seasons and the age and size
of particular species that may be caught and other such rights,

but also to implement enforcement procedures. Unlike

Nicaragua, this is precisely what Colombia has done.

8.62. The management and conservation of the living

resources of the exclusive economic zone has an obvious

economic importance, but economic considerations and security

interests are closely interrelated. Many of the inhabitants of the

San Andrés Archipelago depend on fishing for their livelihoods.
Failure of others to respect regulations that Colombian

fishermen themselves are subject to risks friction in the area and

maritime incidents. Colombia has taken positive steps to

control this situation as is evidenced by the fact that it has not

551 NM, para. 3.69.

304experienced any serious incidents with its other neighbours in

the region.

8.63. A coastal State also has the right not simply to exercise
sovereignty over its territorial sea, but also to prevent

infringement of its customs, fiscal, immigration and security

laws and to punish infringement with its laws and regulations
within a distance of 24 nautical miles of its baselines

corresponding to a contiguous zone. Unlike the EEZ, there is no

obligation for a State to proclaim a contiguous zone or to

publish charts indicating its limits.

8.64. Consistent with Article 17 of the 1988 United Nations

Convention Against Illicit Traffic in Narcotic Drugs and
Psychotropic Substances, States are also encouraged to co-

operate in agreeing arrangements to board and search vessels

flagged by another State suspected of illicit drug trafficking.

The 1997 Agreement between Colombia and the United States
is precisely such an agreement which has been actively

implemented in the waters around the San Andrés Archipelago

lying beyond the territorial sea of Colombia’s islands.

8.65. Nicaragua also overlooks the fact that intelligence

sharing and the tracking of vessels or aircraft suspected of being

involved in illegal activities is also an important security and
policing matter. Such actions are not limited to areas over

which a State exercises sovereignty, and Colombia has actively

305engaged in such operations within the San Andrés Archipelago

in order to safeguard its essential security interests.

E. Geographic Factors and Proportionality

8.66. The provisional equidistance line lies midway between

the westernmost of Colombia’s islands and Nicaragua’s
easternmost islands as illustrated on Figure R-8.3. It fully

respects the conduct of the Parties as described in the previous

sections. The question next arises whether, when considering
the other factors discussed above, there are any geographic

circumstances that militate in favour of an adjustment being

made to this line in order to produce an equitable result, bearing
in mind that it is not the purpose of maritime delimitation to

refashion geography or to render alike what nature has created

differently.

8.67. Colombia does not consider that any adjustment is

required either on geographic or other grounds. From north to

south, the islands of Quitasueño, Santa Catalina, Providencia,
San Andrés and Alburquerque form a long chain. Those islands

are in turn “backed up” by Serrana, Roncador, Serranilla, Bajo

Nuevo and the East-Southeast Cays which lie to their east and
northeast. All of these islands generate maritime entitlements

under international law.

8.68. Figure R-8.3 shows that, quite apart from continental

shelf and exclusive economic zone entitlements, even the

306minimum entitlements of Colombia’s islands to a territorial sea

and 24-mile contiguous zone meet and overlap. Serrana and

Roncador lie behind Colombia’s western islands, and their 24-

mile belts (not to mention their 200-mile EEZ and continental

shelf entitlements) also overlap with each other and, in the case
of Serrana, with that of Quitasueño. In addition, the territorial

seas and contiguous zone entitlements of Alburquerque, San

Andrés and East-Southeast Cays meet and overlap, as can be

seen on the figure.

8.69. Nicaragua complains that the alignment of Colombia’s

islands along a north- south axis “exacerbates the inequitable
nature of Colombia’s equidistance line.” 552 If anything, the

opposite is the case. This alignment, when coupled with the

proximity of Colombia’s islands to each other and the activities

that Colombia has engaged in with respect to resource

management, conservation, safety and security, reinforces the

equitable nature of adopting an equidistance-based boundary.
Some nine sets of basepoints that are situated on several of

Colombia’s islands control the co urse of the line. A similar

number of basepoints are located on Nicaragua’s islands. 553

This is far more than can occur with mainland coasts, as was

illustrated in the Romania-Ukraine case where just two or three

552 NR section heading at p. 206; para. 6.127.
553
The relevant basepoints can be seen on Figure 9.2 to Colombia’s
Counter-Memorial. Also CR, Figures R-6.3 and R-8.3.

308sets of basepoints on the Parties ’ respective coasts actually the
554
course of the entire equidistance line.

8.70. While Nicaragua’s mainland coast does not provide any

basepoints for the equidistance line because of the presence of

the Islas Mangles (Corn Islands), Roca Tyra, the Miskitos Cays

and Edinburgh Reef lying off that coast, it has already been
shown on Figure R-6.4 at page 230 that an equidistance line

drawn between Colombia’s islands and Nicaragua’s mainland

coast lies considerably to the west of the islands-to-islands

equidistance line. It follows that Colombia’s line accords to

Nicaragua more substantial maritime areas within the relevant
area than would an equidistance line using the Nicaraguan

mainland coast instead. It also follows that the maritime areas

appertaining to Nicaragua under Colombia’s equidistance line

are more extensive than those appertaining to Colombia within

the delimitation area between the relevant coasts of the Parties.

8.71. Even if it was considered appropriate – quod non – to

make some adjustment to an islands-to-mainland equidistance

line to take account of disparities in coastal lengths, Colombia

has shown that a modified equidistance line giving Colombia’s
islands roughly the same effect as Jan Mayen received vis-à-vis

Greenland or that Malta received vis-à-vis Libya would fall in

the same general area as Colombia’s equidistance line.

554
Nicaragua’s argument that the relation of Colombia’s islands to each
other is “similar” to the relation of Se rpent’s Island to the mainland coast of
Ukraine is absurd, as has been shown at paras. 6.52-6.56 above.

3098.72. The Court has made it clear that maritime delimitation is

not an exercise in distributive justice or in drawing lines

according to “nice calculations of proportionality”. 555 I

situations where the rights of third States come into play along

the perimeter of the area to be delimited, the Court has also

shied away from applying proportionality because, to borrow
the Court’s words -

“there is the probability that future delimitations
with third States would overthrow not only the
figures for shelf areas used as a basis for
556
calculations but also the ratios arrived at.”

8.73. Nicaragua accepts that “proportionality as such cannot

produce a delimitation.” 557 Nicaragua also has no interest in

applying a proportionality test (or perhaps more accurately, a

disproportionality test) to its own continental shelf claim for the

obvious reason that such a claim, in addition to its other legal

defects, is grossly disproportionate. Neverthele ss, the Nicaraguan

Replystates:

“In this general context, it would be particularly
bizarre if a factor related to coasts and coastal
lengths (as Colombia recognizes in the Counter-

Memorial) were to be used ab extra to impose a
limit upon continental shelf entitlement as
represented in the concepts of the continental
margin and of the outer limits of the shelf as

555 Continental Shelf (Libyan Arab Jamahiriya/Malta), Judgment, I.C.J.
Reports 1985, p. 40 para. 46 and p. 45, para. 58.
556 Ibid., p. 53, para. 74.
557 NR, para. 3.57.

310 defined in Art558e 76 of the 1982 Law of the Sea
Convention.”

8.74. What Nicaragua fails to appreciate is that its own claims

and enclave proposals artificially impose a completely

unjustified limit on the entitlements of all of Colombia’s islands.

There is nothing equitable about such an approach particularly
when considered in the light of the activities Colombia has

engaged in throughout the waters of the Archipelago with

respect to resource management, security and safety.

8.75. In contrast, Colombia’s method reflects the legal
principles governing maritime delimitation as well as the

relevant circumstances. The equidistance line between the

relevant opposite coasts of the Pa rties affords to Nicaragua a

greater maritime area between those coasts than it does to
Colombia while, at the same time, delimiting the area by means

of a line that is constituted by reference to where the projections

from each Party’s coasts meet. An equidistance line in this case

thus does produce an equitable result.

F. The Interests of Third States

8.76. Colombia has addressed the relevance of the actual or

potential interests of third States in the region in Chapter 5 in
connection with the identification of the relevant area.

Colombia is sensitive to the fact that delimitation in the present

558 NR, para. 3.61.

311case should not prejudice such interests. It was for this reason

that Colombia did not specify any end-points for its delimitation
line in its Counter-Memorial, but rather placed arrows on the

north and south of its equidistance line to show that the terminal

points of any delimitation depend on the rights of third States. It

also explains why Colombia has no objection to Costa Rica’s

intervention in the case.

8.77. As the Counter-Memorial explained, Colombia has

concluded delimitation agreements with Panama, Costa Rica,

Jamaica and Honduras. The agreement with Costa Rica has not

been ratified by Costa Rica, but Costa Rica has made it clear
that it complies with the provisions set out in the agreement. 559

Colombia does not claim any maritime areas against third States

beyond the limits of the boundaries set out in those agreements.

8.78. In the north, Colombia’s equidistance line does not
impact on the boundary the Court delimited between Nicaragua

and Honduras. Areas lying to the south of that line, however,

are able to be delimited between Colombia and Nicaragua. In

the south, Colombia also placed an arrow on its equidistance

line. As Colombia noted: “There is a question how far the
median line should be prolonged to the south given the potential

interests of third States in the region”. It is clear, therefore, that

Colombia has taken the actual or potential rights that third

States may have into account. As previously pointed out,
559
See, CCM paras. 4.155-4.162 and Annexes 17, 18, 67, 69; CR
Annexes 1-3; and, Costa Rica’s Application to Intervene, para. 12.

312moreover, the delimitation treaties concluded between Colombia
and its neighbours are important relevant circumstances both for

identifying the delimitation area and for arriving at an equitable

result.

8.79. The delimitation practice of Colombia and third States in
this part of the Caribbean Sea also shows that Costa Rica,

Panama, Jamaica and Honduras have all concluded boundary

treaties with Colombia that presuppose that the islands in

question belong to Colombia and that, for the most part, they are
entitled to full, or substantially full, equidistance effect for

purposes of achieving equitable delimitations. 560 All of those

agreements are consistent with Colombia’s delimitation

methodology in this case; none of them supports Nicaragua’s
enclave theory.

8.80. It is also apparent that no other States in the region

consider that there are any areas of outer continental shelf

beyond 200 nautical miles from their territory in the region, and
none have made extended continental shelf submissions to the

United Nations Commission. This is another element of

regional State practice which is fundamentally at odds with

Nicaragua’s new outer continental shelf claim.

8.81. The delimitation agreements between Colombia and

other States have played an important role in contributing to the

560 See paras. 7.55-7.63 above and CCM, paras. 8.33-8.56, 9.65-9.70.

313maintenance of peace and stability and in fostering cooperation

in the fields of resource conservation and the fight against

pollution in the region. As a result of these agreements, there
have been no maritime incidents involving Colombia and its

other neighbours in this part of the Caribbean.

8.82. Nicaragua’s claims, on the other hand, completely ignore

the interests of third States. The delimitation area posited by

Nicaragua cuts right across the coasts of Panama and Costa Rica
in the south and impinges on areas relevant to Jamaica in the

north. With its new continental shelf claim, Nicaragua claims

areas that lie much closer to third States, as well as to

Colombian territory, than they do to Nicaragua and in which
Nicaragua has never displayed any official presence or taken

any conservation or security enhancing measures. Nicaragua’s

approach to delimitation is plainly misconceived both with
respect to the area that it advances as the “delimitation area” and

with respect to its claim lines. There is, in short, nothing

equitable about Nicaragua’s claim which, amongst its other
shortcomings, fails to take account of the presence of third

States as a relevant circumstance.

G. Conclusions

8.83. The provisional equidistance line that Colombia has put

forward in Chapter 6 produces a result that is prima facie
equitable. An assessment of the relevant circumstances

characterizing the area confirms the equitable nature of that line.

3148.84. Unlike Nicaragua’s exaggerating claims and its enclave

theory, the equidistance line respects the conduct of the Parties

in relation to the management and preservation of the resources

of the area as well the essential security interests that Colombia
has been active in protecting. It lies in the same general area as

the 82°W meridian, which constitutes the western limit of the

San Andrés Archipelago and which also broadly represents the
easternmost limit of State a ctivities that Nicaragua has carried

out in the area. The equidistance line also respects the interests

of third States in the region.

8.85. For these reasons, Colombia does not consider that any

adjustment of the provisional equidistance line is called for in

order to achieve an equitable result in this case.

315 PART THREE

OTHER MATTERS Chapter 9

NICARAGUA’S REQUEST FOR A

DECLARATION

9.1. Part III of Nicaragua’s Reply, entitled “Declaration”,

sketches a claim for a generic declaration that Nicaragua is
561
entitled to damages. This entitlement is said to arise from

what Nicaragua variously describes as Colombia’s enforcement
562
of the maritime boundary around the 82° meridian, “a

blockade against Nicaragua’s access to the natural resources
nd 563
located east of the 82 meridian,” and the “illicit[] use[] by

Colombia for her unjust enrichment and to the detriment of

Nicaragua … [of] over 100,000 square kilometres of maritime
564
spaces.”

9.2. This claim by Nicaragua lacks any basis. Since 1930,

when the 1928/1930 Treaty entered into force, Colombia has

strictly complied with it. The Treaty clearly set out the 82°W

meridian as a limit and Colombia depicted it as such since the

first map it issued in 1931 (which Nicaragua did not protest or
565
object to). Colombia exercised its jurisdiction in a peaceful

manner, and in conformity with international law, up to that

limit. This exercise of jurisdiction by Colombia was not

561 NR, pp. 235-238.
562 NR, p. 236, para. 3.
563 NR, p. 236, para. 5.
564
565 NR, p. 237, para. 6.
See CPO, Vol. III, Maps 4 and 4 bis, and CCM, Vol. III, Figures
2.12 and 2.13.

319challenged by Nicaragua until 1967, 37 years after the Treaty

was concluded.

9.3. While the Court in 2007 held that the 1928/1930 Treaty

did not “effect a general delimitation of the maritime spaces
566
between Colombia and Nicaragua;” it also held that the

relevant provision in the 1930 Protocol was “intended to fix the
western limit of the San Andrés Archipelago at the 82 nd

meridian.” 567 That being so, there can be no basis for any claim

of Colombian responsibility for conduct carried out in good

faith within the limits of an Archipelago long administered by it

as an entity, and now once again acknowledged to appertain to

it.

9.4. Nicaragua has limited the exercise of jurisdiction to the
west of the 82°W meridian, pursuant to the 1928/1930 Treaty,

except for a few incidents that elicited Colombia’s timely

protests. It never made a determinate claim to a maritime

boundary to the east of the 82°W meridian, until it made its

untenable claim to an all-purpose line, ignoring the Archipelago,

in the Memorial. (That claim it no longer sustains.) By contrast

there is necessarily an equidistance line between points of the

parties’ respective coasts, and its course is for the most part even
further west than the 82°W meridian.

566 Territorial and Maritime Dispute (Nicaragua v. Colombia)
Preliminary Objections, Judgment of 13 December 2007, p. 35, para. 116.
567 Ibid., p. 34, para. 115.

3209.5. In addition to its being based on a wrong premise,

Nicaragua’s claim lacks an essential element. No specification

of damages is attempted for any of these alleged wrongs.

Indeed it is not clear that Nicaragua appreciates that its three

claims are quite different one from the other.

9.6. The use or misuse of the law of State responsibility in

the case of boundary disputes has already been a matter for

consideration by the Court, both in land and maritime cases.

Two examples may be given.

9.7. In Cameroon v Nigeria, the Court was faced with claims
for unspecified damages by Cameroon for boundary incidents

and occupation of disputed areas by Nigeria, as well as with a

Nigerian counter-claim for damages against Cameroon. The
568
Court found the counterclaim admissible, but summarily and

unanimously dismissed both the responsibility claims and the

counterclaim on the ground that they had not been sufficiently
substantiated. 569 The Court evidently, and rightly, set a high

standard of proof of State responsibility in boundary cases.

9.8. Ihe Fisheries Jurisdiction case (Federal Republic of

Germany v Iceland), the Federal Republic of Germany sought a

declaration that it was entitled to damages for Iceland’s

568 Land and Maritime Boundary between Cameroon and Nigeria,
Order of 30 June 1999, I.C.J. Reports 1999, p. 983.
569 See e.g. Land and Maritime Boundary between Cameroon and

Nigeria (Cameroon v. Nigeria: Equatori al Guinea intervening), Judgment,
I.C.J. Reports 2002, p. 303, 452-3.

321harassment of Federal Republic of Germany-registered fishing

vessels and crews. The Court refused the declaration in the

following words:

“76. The documents before the Court do not
however contain in every case an indication in a
concrete form of the damages for which

compensation is required or an estimation of the
amount of those damages. Nor do they furnish
evidence concerning such amounts. In order to
award compensation the Court can only act with

reference to a concrete submission as to the
existence and the amount of each head of
damage. Such an award must be based on
precise grounds and detailed evidence concerning
those acts which have been committed, taking

into account al1 relevant facts of each incident
and their consequences in the circumstances of
the case. It is only after receiving evidence on
these matters that the Court can satisfy itself that
each concrete claim is well founded in fact and in
570
law.”

The Court declined to make “an all-embracing finding of

liability which would cover matters as to which it has only
571
limited information and slender evidence”.

9.9. If the Court had “only limited information” as to

damages in that case, in the present case it has none. Moreover

the Federal Republic of Germany had sought and obtained

provisional measures expressly enjoining the enforcement of the

570
See e.g. Fisheries Jurisdiction (Federal Republic of Germany v.
Iceland), Merits, Judgment, I.C.J. Reports 1974 , p. 175, 203-205, paras. 71-
571
Ibid., p. 205, para. 76.

32250 nm fisheries zone. 572 Further, Iceland’s conduct in defence

of its putative fisheries zone contravened a status quo agreement

between the parties and was probably wrongful independently of

the opposability of maritime zones.

9.10. Under these circumstances, there is no basis whatever for

a finding of Colombian responsibility with respect to fisheries
enforcement, still less is there any basis for Nicaragua’s absurd

“unjust enrichment” claim. Where two States disagree as to a

maritime boundary, it is counterfactual, and would be highly

counterproductive, to treat the eventual adjudicated boundary as

having existed “from the beginning” and to award damages to

the winning party in a given sector for earlier use of the disputed

resources by the other party in that sector. Even less, when the

party that has been enforcing its maritime and fisheries
jurisdiction has done so, in good faith, on the basis of a treaty-

fixed limit to its territory.

9.11. The question-begging character of Nicaragua’s claim for

a declaration can be seen from the way it is formulated:

“Colombia is not acting in accordance with her

obligations under international law by preventing
and otherwise hindering Nicaragua from
accessing and disposing of her natural resources
to the east of the 82nd meridian.” 573

In truth, Colombia has peacefully exercised maritime and

572 Fisheries Jurisdiction (Federal Republic of Germany v. Iceland),
Interim Protection, Order of 17 August 1972, I.C.J. Reports 1972, p. 30.
573 NR, p. 237, para. 8.

323fisheries jurisdiction over the waters of the Archipelago up to

the 82°meridian, the western limit of the Archipelago.

9.12. It should be noted that incidents only began to arise in
the area as of 1967 when Nicaragua for the first time sought to

carry out activities to the east of the limit of the San Andrés

Archipelago, as fixed by the 1930 Protocol, by granting oil
exploration permits east of the 82°W meridian in the vicinity of

Quitasueño.

9.13. For their part, all the hydrocarbon exploration activities
or fishing by Colombian vessels or vessels affiliated to

Colombian companies, have scrupulously observed the 82°W

meridian.

9.14. As pointed out in Chapter 8, for the most part,

Nicaraguan-flagged vessels have respected or complied with

Colombian laws and regulations by seeking (and being granted)
permits to fish east of the 82°W meridian. When Nicaraguan

vessels have occasionally been detected carrying out fishing

activities in areas located to the east of the 82°W meridian
without permits, Colombian authorities have abided by the

regulations and procedures in force for that type of situation.

See further Figure R-8.2. at page 289.

9.15. For these factual and legal reasons, as well as because of

its extreme vagueness and indeterminacy, Nicaragua’s request

324for a declaration should be dismissed. Pending the resolution of

the dispute over maritime delimitation, neither party is

internationally responsible simply for maintaining a claim –

whether or not that claim is vindicated in the result. 574

574 Cf. Judge ad hoc Gaja’s comment in the jurisdictional phase of the
present case: “the adoption by Colombia of a wide interpretation of the scope
of the 1928 Treaty as including maritime delimitation, even if incorrect,

cannot conceivably constitute a material breach [of that Treaty]”.

325 SUMMARY

Colombia’s sovereignty over the cays

1. The Archipelago of San Andrés is formed by the islands
of San Andrés, Providencia and Santa Catalina; the cays of

Roncador, Quitasueño, Serrana, Serranilla, Bajo Nuevo,

Alburquerque, and the group of cays of the East-Southeast,

together with appurtenant features.

2. The islands and cays of the Archipelago were considered
as a group during the colonial and post-colonial periods. The

islands of San Andrés, Providencia, Santa Catalina, Mangle

Grande (Great Corn) and Mangle Chico (Little Corn); the cays

of Roncador, Quitasueño, Serrana, Serranilla, Bajo Nuevo,
Alburquerque, East-Southeast and other adjacent islets, cays and

shoals were traditionally considered as an archipelago and were

geographically, politically, economically and historically
interrelated.

3. Pursuant to the 1803 Royal Order the San Andrés
Archipelago was an integral part of the Viceroyalty of Santa Fe

(New Granada). Colombia, the successor State, exercised

sovereignty over all the islands, islets and cays of the
Archipelago, including Roncador, Quitasueño, Serrana,

Serranilla, Bajo Nuevo, East-Southeast and Alburquerque. This

situation was recognized by third States, including Nicaragua, in
particular in its response to the Loubet Award. The only

327exception was the Nicaraguan claim to the Islas Mangles (Corn
575
Islands).

4. In the 1928/1930 Treaty, Nicaragua expressly

recognized “the full and entire sovereignty of the Republic of

Colombia over the islands of San Andrés, Providencia, Santa

Catalina and all the other islands, islets and cays that form part

of the said Archipelago of San Andrés”. For its part, Colombia
recognized Nicaraguan sovereignty over the Mosquito Coast

and the Islas Mangles (Corn Islands). That Treaty, which is still

in force, resolved the question of sovereignty as between the

Parties as to all maritime features in the Caribbean Sea, likewise
576
to the west and the east of the 82qW meridian.

5. The 82°W meridian limit was included in the 1930

Protocol at Nicaragua’s insistence, and with a view to protecting

itself against potential claims by Colombia to islets and cays off

the Nicaraguan coast and to the west of the meridian, including

the Miskito cays. The 82 qW meridian was conceived by the
signatories of the Protocol as a general limit between Colombia

and Nicaragua.

6. Although the 1928/1930 Treaty stated that the cays of
Roncador, Quitasueño and Serrana were in dispute between

Colombia and the United States, that fact bore no relation to any

claim or entitlement of Nicaragua. Colombia and the United

575
576 See CCM, paras. 4.114-4.133; above, paras. 2.10-2.11, 2.45.
See CCM, Chapter 5; above, paras. 2.53-2.69.

328States agreed on a regime for the three cays by the Olaya-

Kellogg Agreement of 10 April 1928, the terms of which were

officially communicated by Colombia to Nicaragua well before

the ratification of the 1928/1930 Treaty. Nicaragua made no
reaction, treated the dispute as settled by the 1928/1930 Treaty,

and for at least 40 years made no claim to any part of the

Archipelago.

7. Between 1969 and 2003, Nicaragua purported to claim

progressively different parts of the Archipelago. Its general
claim to the Archipelago as a whole has already been rejected

by the Court, and its serial claims to specific features are

entirely lacking in legal or historical support. In the absence of
any indicia of title or the slightest measure of effectivités, it

argues that the cays were appurtenant to the Mosquito Coast

(unless proved by Colombia to belong to the Archipelago). But

(a) this claim is inconsistent with the 1928/1930 Treaty; (b) it is
contradicted by all the available evidence; (c) it ignores

Nicaragua’s onus to substantiate its claims. Its second argument

– its claim that the cays are located on the “Nicaraguan”

continental shelf – besides being factually inaccurate and
temporally challenged (the continental shelf doctrine came far

too late to affect sovereignty over the islands) ignores the

fundamental premise that “the land dominates the sea” and not
vice-versa.

3298. The 1972 Treaty between the United States and

Colombia concerning the status of Roncador, Quitasueño and

Serrana replaced the Olaya-Kellogg Agreement of 1928.

Although the United States and Colombia put on record

diverging views over the status of Quitasueño, there was no
disagreement as to which government had actual authority over

these three cays and the surrounding waters. The subsequent

practice shows a clear and continuous acceptance by the United

States, as well as by third States including those in the

immediate region, of Colombia’s authority in the area, including
577
the waters around Quitasueño.

9. Despite Nicaragua’s characterisation of Quitasueño as a

“submerged bank”, it contains a number of islands, as that term

is defined in Article 10(1) of the 1958 Convention on the

Territorial Sea and the Contiguous Zone and in Article 121(1) of
the UNCLOS, which reflect customary international law. This

is confirmed by a further expert report by Dr Robert Smith

annexed to this Rejoinder. In any ev ent, Quitasueño as a group

of islands and low-tide elevations with a fringing reef

constituting distinctive and substantial maritime feature and as

such is capable of approp riation in international law. This has

been recognized by the 1928 Treaty. It is also capable of
generating, as a minimum, a territorial sea and contiguous zone,

and of acting as an EEZ/continental shelf basepoint. 578

577 See CCM, paras. 4.51-4.77; above, paras. 3.35-3.36.
578
See e.g., CCM, paras. 4.58(2), 4.97-4.102 ; above, Chapter 3, paras.
5.35-5.36, and for the Smith Report see Appendix 1.

33010. In short, Nicaragua has failed to make out a coherent
alternative case for sovereignty over any of the cays – its

primary case (its claim to the Archipelago as a whole) having

failed at the Preliminary Objections stage. In essentials the case

is reduced to one about maritime delimitation between the

Colombian islands and cays and Nicaragua’s easternmost
islands and cays.

The maritime boundary

11. As to the maritime boundary, in its Memorial Nicaragua

proposed a mainland-to-mainland median line which did not

effect a delimitation between the relevant coasts of the Parties

and which fell in an area where Nicaragua has no legal
entitlement.

12. Tacitly conceding this, Nicaragua’s Reply presents a new

and fundamentally different claim. Without any explanation for
its change of position, the Nicaraguan Reply now states that

Nicaragua has “decided that her request to the Court should be
579
for a continental shelf delimitation” – as if the scope of a case

once submitted to the Court could be unilaterally redefined by
the Applicant.

13. Nicaragua asks the Court to accept the proposition that it
possesses extended continental shelf rights stretching well

beyond 200 miles from its coasts. This claim is advanced

579 NR, p.12, para. 26.

331despite the facts that (a) nowhere in the western Caribbean is

there any continental shelf beyond 200 nm from the nearest

coasts; (b) even if there were any such areas, Nicaragua has

made no submission to the United Nations Annex II
Commission regarding such alleged rights; (3) the Commission

has neither considered the matter nor issued any

recommendations relating to it; (4) Nicaragua’s maritime claim
intrudes well into the area of the EEZ appurtenant to Colombia’s

(longer) mainland coast, yet Nicaragua offers no explanation for

how its alleged seabed rights could coexist with Colombia’s

unquestionable EEZ rights to the water column and seabed or
supersede Colombia’s entitlement to a 200 nautical mile

continental shelf from its territory.

14. Quite apart from formal considerations, including the

inadmissibility of a new outer continental shelf claim at this late

stage of the proceedings, Nicaragua’s new and exaggerated
claim suffers from insurmountable defects. Procedurally,

extended continental shelf claims fall to be submitted to and

considered by the Annex II Commission based on a full

submission. Nicaragua has not made such a submission.
Factually, the meagre information furnished by Nicaragua does

not begin to support any entitlement to outer continental shelf

rights. Legally, there are no areas of outer continental shelf in
this part of the Caribbean Sea because the areas concerned all lie

within 200 nautical miles of the ter ritory of other littoral States

bordering the region, including within the overlapping 200-

332nautical miles zones of Colombia’s insular and mainland

territory.

15. Nicaragua’s new claim, like its old abandoned one, falls

in areas where Nicaragua has no legal entitlement and is based

on a purported equal division alleged overlapping of physical

continental shelves that is at odds with the well established

principles and rules of international law governing maritime
delimitation reflected in the equidistance-relevant circumstances

rule.

16. As to delimitation around the Archipelago, Nicaragua
proposes that Colombia’s islands be enclaved at 3 or 12 nautical

miles, lest they act as an “impenetrable wall” against the natural

prolongation or projection of Nicaragua’s coasts, particularly its
580
mainland coast. But distant offshore islands such as these

(100-270 nautical miles away from Nicaragua’s mainland coast)

have never been enclaved either by international courts and
tribunals or in State practice. The Channel Islands decision of

1976, on which Nicaragua primarily relies, is utterly
581
incomparable.

17. In contrast, Colombia’s approach to delimitation has

been presented squarely within the established legal principles

of maritime delimitation as those principles have been

articulated by the Court and arbitral tribunals. Colombia has

580
581 NR, paras. 6.5, 6.10 and 6.12, and Chapter VI(II) generally.
See CCM, paras. 7.35-7.57; above, Chapter 7.

333shown that the area within which the maritime projections of the

Parties’ coasts meet and begin to overlap is situated in the area

lying between the islands comprising the San Andrés

Archipelago and Nicaragua’s coast – including islands – taking
into account the actual and prospective rights of third States in

the region. Colombia has then applied the equidistance-relevant

circumstances rule to the delimitation of that area using clearly
identified basepoints on the coasts of each Party to construct the

provisional equidistance line.

18. At the second stage of the pro cess, Colombia has taken

into account the relevant circumstances characterizing the case

to assess whether those circumstances confirm the equitableness
of the provisional line or call for any adjustment. In the light of

the past conduct of the Parties and the relevance of the 82°W

meridian as the western limit of the San Andrés Archipelago,

Colombia shows that an equidistance based delimitation
produces an equitable result.

19. Nicaragua’s claim neither accords with the modern
international law of maritime delimitation nor does it produce an

equitable result. Nicaragua rejects the equidistance-relevant

circumstances rule in favour of an outer continental shelf claim
which is procedurally inadmissible, legally flawed and factually

unsupported. Nicaragua’s attempt to enclave islands which lie

between 106 (Alburquerque) and 266 (Bajo Nuevo) nautical

miles from its coast is unprecedented and unsustainable.

334Nicaragua ignores the fact that Colombia has consistently
exercised jurisdiction throughout all the waters of the

Archipelago. Nicaragua also pays no attention to the presence

of third States in the region or the positions such States have

taken regarding the legal entitlements of Colombia’s islands are

entitled. Given the geographic facts, and taking into account the
conduct of the Parties and the relevance of the 82°W meridian

as a relevant circumstance, a median line (in fact drawn from

Nicaragua’s offshore islands as well as the islands and cays of

the Archipelago: see Figure R-8.3 at page 307) cannot be said
to produce a disproportionate result calling for any adjustment.

Such a line respects the legal methodology for delimitation

articulated by the Court in its jurisprudence and accords to each

Party appropriate and substantial maritime areas generated by its
relevant coasts and baselines. 582

Conclusion

20. This case is essentially about maritime delimitation. But
the issues of maritime delimitation in this case are not merely

about resources: they raise vital issues both of fidelity to the law

and the future of people. As to the law, they are about applying

the well-established principles and rules relating to maritime
delimitation. As to the future, they are about maintaining the

traditional living space of a substantial, long-established,

Colombian community, as well as preserving security in an

essential area of the south-western Caribbean.

582 See CCM, Chapters 8-9; above, Chapters 6, 8.

335 SUBMISSIONS

For the reasons set out in theCounter-Memorialand developed further in

this Rejoinder, taking into account the Judgment on Preliminary Objections

and rejecting any contrary submissions of Nicaragua, Colombia requests the
Court to adjudge and declare:

(a) That Colombia has sovereignty over all the maritime features in

dispute between the Parties: Alburquerque, East-Southeast, Roncador,
Serrana, Quitasueño, Serranilla and Bajo Nuevo, and all their

appurtenant features, which form part of the Archipelago of San

Andrés.

(b) That the delimitation of the exclusive economic zone and the

continental shelf between Nicaragua and Colombia is to be effected by
a single maritime boundary, being the median line every point of

which is equidistant from the nearest points on the baselines from

which the breadth of the territorial stfe Parties is measured, as

depicted on Figure 9.2 of theCounter-Memoria,land reproduced as

Figure R-8.3of this Rejoinder.

(c) That Nicaragua’s request for a Declaration (NR, pp. 240-1) is rejected.

Colombia reserves the right to supplement or amend the present

submissions.

JULIO L ONDOÑO PAREDES

Agent of Colombia

The Hague, 18 June 2010

337 VOLUME II: LIST OF APPENDICES, ANNEXES AND MAPS

APPENDICES

Appendix 1 Expert Report by Dr. Robert Smith “Mapping the Islands of
Quita(Beñoirbis, Territorial Sea, and
Contiguous Zone”, February 2010.

Appendix 2 Colombia’s Official Nautical Charting of the San Andrés
Archipelago.

ANNEXES

Annex 1 Diplomatic Note DM 14082-2000 from the Minister of Foreign
Affairs of Colombia to the Minister of Foreign Affairs of Costa Rica,
200y.9

Annex 2 Diplomatic Note DM 073-2000 from the Minister of Foreign Affairs
of Costa Rica to the Minister of Foreign Affairs of Colombia, 29
200a0.

Annex 3 Report to Congress by the Minister of Foreign Affairs of Costa Rica,
2000-2001.

Annex 4 1997 Agreement to Suppress Illicit Traffic by Sea between Colombia

and the United States of America.

MAPS

I. FIGURE IN CHAPTER 2

R-2.1 Islands Claimed by Nicaragua in its 1900 Note with regard to the
AwarLdoubet

339 II. FIGURES IN CHAPTER 3

R-3.1 Quitasueño - Islands and Low Tide Elevations Identified During Site
Visit by Doctor Smith

R-3.2 Quitasueño - 12 M Territorial Sea Limits

(Measured From All 54 Identified Features and the Fringing Reef)

III. FIGURES IN CHAPTER 4

R-4.1 Nicaragua’s Maritime Claim Divides an Area where It has No
Maritime

Entitlement

R-4.2 Nicaragua’s Encroachment on Colombia’s 200 M Entitlements

R-4.3 Nicaragua’s Claims: One More Extreme than the Other

R-4.4 200 M Maritime EntitlementsCompletely Overlap In the

Caribbeeaern

R-4.5 Continental Shelf Areas Identified In Submissions to the UN,
as of 10 June 2009

R-4.6 Japan’s Extended Continental Shelf Claim in the Southern Kyushu-
Palau

RegionRidge

R-4.7 New Caledonia’s Extended Continental Shelf Claim in the Loyalty
Ridge
& Lord Howe Rise Regions

R-4.8 New Zealand’s Extended Continental Shelf Claim Does Not

Trespass into the
200 M EEZ Entitlements of Neighboring States

R-4.9 Sri Lanka’s Extended Continenta l Shelf Claim Does Not Trespass
into the
200 M EEZ Entitlements of Neighboring States

340R-4.10 France, United Kingdom, Spain, & Ireland’s Extended Continental
Shelf Claim in the Celtic Sea & Bay of Biscay Area

IV. FIGURES IN CHAPTER 5

R-5.1a Alburquerque Cays / Serrana Cay

R-5.1b Roncador Cay / East-Southeast Cays

R-5.1c Serranilla Cay / Bajo Nuevo Cay

R-5.1dAnSanés

R-5.1e San Andrés & Providencia

R-5.2 Quitasueño Cay - Landsat V Image

R-5.3 200 M Maritime Entitlements of Colombia’s Islands

R-5.4 Relevant Area between the San Andrés Archipelago and Nicaragua

R-5.5 Central Portion of the Western Caribbean Sea

V. FIGURES IN CHAPTER 6

R-6.1 Libya – Malta
ICJ Continental Shelf Boundary Judgment: 1985

R-6.2 Greenland / Jan Mayen
ICJ Continental Shelf Boundary Judgment: 1993

R-6.3 TheMedianLine

R-6.4 The Median Line If Nicaragua’s Islands are Ignored

341VI. FIGURES IN CHAPTER 7

R-7.1 Proximity of the Islands in the San Andrés Archipelago

R-7.2 Libya – Malta
JudgJ19ent:

R-7.3 Canada – France
ArbitAa1oar2:

R-7.4 India – Maldives
BounAdgarem9ent:

R-7.5 FA rnstealia
BounAdgarement:
1983

R-7.6 India – Thailand
BounAdgarement:
1978

R-7.7 São Tomé & Príncipe
BounAdgare/ ents
EquaGtoraea:
G2a001:

R-7.8 Cape Verde – Mauritania: 2003

Cape Verde – Senegal: 1993
BounAdgarements

R-7.9 Dominican Republic – United Kingdom
BounAdgarem9ent:

R-7.10 Indonesia – Malaysia (Strait Of Malacca Area)

ContinSgrlem9ent:

VII. FIGURES IN CHAPTER 8

R-8.1 Comparison of the Median Line to the 82° W Longitude Line

342R-8.2 Colombian and Nicaraguan Naval Interdictions

R-8.3 Colombia’s Median Line Proposal

343

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Rejoinder of Colombia

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