Reply of Nicaragua

Document Number
16971
Document Type
Date of the Document
Document File
Document

INTERNATIONAL COURT OF JUSTICE

TERRITORIAL AND MARITIME DISPUTE
(NICARAGUA v. COLOMBIA)

REPLY OF THE

GOVERNMENT OF NICARAGUA

VOLUME I

18 SEPTEMBER 2009 TABLE OF CONTENTS

INTRODUCTION ....................................................................................................1 

I. ROCEDURAL H ISTORY ........................................................................................ 1 

II. HE QUESTION OF SOVEREIGNTY ....................................................................... 2 
III. ARITIME D ELIMITATION ............................................... ............................... 12

IV. COLOMBIA ’SC ONTINUED MPOSITION OF THE 82 M ERIDIAN .......................15 

V. SUMMARY OF THE R EPLY ................................................................................. 19 

PART I: THE ISSUE OF SOVEREIGNTY .........................................................21 

CHAPTER I: THE ISSUE OF SOVEREIGNTY ................................................23 

I.NTRODUCTION ..................................................................................................23 

II.HISTORY OF THE DISPUTE ON SOVEREIGNTY ................................ ................... 24

III. ONSEQUENCES OF THE VALIDITY OF THE 1928 TREATY ...............................27 

A.I NTERPRETATION OF THE 1928 TREATY .......................................................... 29 

B.W HAT MARITIME FEATURES FORM P ART OF THESAN ANDRÉS A RCHIPELAGO

OVER WHICH THE SOVEREIGNTY OF C OLOMBIA W ASR ECOGNIZED BY N ICARAGUA

IN PARAGRAPH 1OF A RTICLEIOF THE 1928 TREATY ? .......................................32 

1. Uti possidetis iuris ............................................. ................................................32

2. Colonial era...................................................... ..................................................38
3. What was understood by the reference to the “islands of San Andrés ? ............. 44

C.T HE SPECIAL QUESTION OF R ONCADOR ,SERRANA AND Q UITASUEÑO ) ..........50 

1. The second paragraph of Article I of the 1928 Treaty: the text.... ......................50

2. The second paragraph of Article I of the Treaty: not an implicit relinquishment
by Nicaragua ........................................................ .................................................. 53

3. The second paragraph of Article I of the 1928 Treaty: basis of title to the three

features .................................................................................................................... 54

IV. CONCLUSIONS ................................................................................................. 55 

PART II : MARITIME DELIMITATION ........................................................... 57 

MARITIME DELIMITATION .............................................................................59 

GENERAL INTRODUCTION .....................................................................................59 

CHAPTER II: LEGAL AND GEOGRAPHICAL FRAMEWORK..................61 

I. EGAL FRAMEWORK .........................................................................................61 

I A.NICARAGUA’SCLAIMS TO THRESOURCES OF THECONTINENTALSHELF,A

NATIONALFISHINGZONE,AND ANEXCLUSIVEECONOMIC ZONE ........................61 

B.COLOMBIA’SCLAIMSR EPRESENTED ILEGISLATIO.....................................63 

C.THE APPLICABLELAW............................................ ...................................... 63

II. HEG ENERAL GEOGRAPHICAL FRAMEWORK AND THE DELIMITATIONA REA.65 

A.THE RELEVANTCOASTS OFNICARAGUA ANDCOLOMBIA ................................65 

B.ISLANDS........................................................................................................67 

C.M ARITIMD ELIMITATIO.............................................................................69 

CHAPTER III : THE DELIMITATION OF THE CONTINENTAL SHELF

AREA .......................................................................................................................73

I. NTRODUCTION ..................................................................................................73 

II.APPLICABLELAW ............................................................................................. 77 

III. HECLAIMS TOC ONTINENTALSHELF AREA ..................................................78 

IV. THECRITERION OF THN ATURAL PROLONGATION OF THELAND TERRITORY

OF THEC OASTALS TATE TO THOUTER EDGE OF THECONTINENTAL M ARGIN

(ENTITLEMENT TOC ONTINENTALSHELF AREAS) ................................................. 78 

V. THEC ONTINENTALS HELF IN THWESTERN CARIBBEAN:THE GEOLOGICAL

AND G EOMORPHOLOGICAL EVIDENCE ..................................................................81 

A.NICARAGUA’SNATURAL PROLONGATION.......................................................82 

B.COLOMBIA’SNATURAL PROLONGATION......................................................... 83 

C.APPLICATION OF THPRINCIPLEREFLECTED INARTICLE76 ............. .......... 85

VI. THEENTITLEMENT TOC ONTINENTALSHELF AND THEA CHIEVEMENT OF A

D ELIMITATION IACCORDANCE WITH ARTICLE83 OF THE1982 AW OF THES EA

C ONVENTION ........................................................................................................88 

A.THE APPLICATIOO F THP RINCIPLE OEQUALD IVISIO............................88 

B.THE GEOLOGICALEVIDENCE OF THEOUTERLIMITS OF THCONTINENTAL

SHELFAREAS ATTRIBUTABLE TNICARAGUA.....................................................89 

C.THE COLOMBIANC ONTINENTALSHELF.........................................................91 

D. OVERLAPPINC ONTINENTALMARGINS.........................................................92 

VII. HE RELATION OF THN ICARAGUAN CLAIM TO THEAREAS OF THE

C ONTINENTALSHELF AND THEO UTERLIMIT OF THEXCLUSIVE ECONOMIC ZONE

OF THEC OLOMBIAN MAINLAND ...........................................................................93 

VIII. HER ELEVANCE OFPROPORTIONALITY AND THEDELIMITATION OF

C ONTINENTALSHELF AREAS ................................................................................ 96 

II A.INTRODUCTION .............................................................................................96 

B.THE RELEVANCE O FPROPORTIONALITY TO THEDELIMITATION OF THAREAS

OF CONTINENTALS LOPE ANDCONTINENTAL M ARGIN........................................97 

IX. HE ENTITLEMENT TO CONTINENTAL SHELF AND THE EFFECT OFISLANDS IN

THEA CHIEVEMENT OF AD ELIMITATION IA CCORDANCE WITH A RTICLE83 OF

THE1982 LAW OF THE SEAC ONVENTION .............................................................99 

CHAPTER IV: PHYSICAL AND LEGAL ASPECTS OF THE MARITIME

FEATURES LOCATED ON THE CONTINENTAL SHELF OF NICARAGUA

................................................................................................................................ 103

I.NTRODUCTION ................................................................................................103 

II. ARITIMEFEATURES CLAIMED BY C OLOMBIA ..............................................103 

A.C OLOMBIA’SARCHIPELAGO ARGUMENT ......................................................103 

B.THE M ARITIMEFEATURES ...........................................................................105 

III.ICARAGUA ’SU NDISPUTEDISLANDS AND M ARITIMEFEATURES ............ .... 110

IV. HE SPECIALCASE OF THESUBMERGED B ANK OFQ UITASUEÑO ............ ..... 115

A.SURVEYS OF THEBANK OF QUITASUEÑO ...................................................... 117 

B.THE PRACTICE OF THEUNITED STATES IRESPECT OF THEBANK OF

Q UITASUEÑO..................................................................................................120 

C.C ONCLUSIONS ON THESTATUS OFQUITASUEÑO ..........................................122 

V. ONCLUSIONS ................................................................................................123 

CHAPTER V: ENCLAVING ISLANDS AND CAYS.......................................125 

I.NTRODUCTION ................................................................................................125 

II.SLANDS AND ROCKS ...................................................................................... 125 

III.ARITIME AREAS INVOLVED ......................................... .............................. 127

IV. NCLAVEMENT ISN ECESSARY TOO BTAIN ANEQUITABLE R ESULT.............128 

V. HANNEL SLANDS A RBITRATION ..................................... ............................ 132

VI.OTHER PRECEDENTS .....................................................................................136 

VII. ONCLUSIONS .............................................................................................138 

CHAPTER VI: COLOMBIA’S DELIMITATION CLAIM ............................. 14 1

I.NTRODUCTION ................................................................................................141 

II.HE ISLAND OFSAN A NDRÉS AND OTHER M INORINSULAR FEATURES DO NOT

BLOCK THE MARITIME PROJECTION OFN ICARAGUA S COAST ...........................145 

III III. HER ELEVANT COASTS AND RELEVANT AREA FOR THED ELIMITATION UNDER

C OLOMBIA’SS CENARIO...................................................................................... 156 

A.THE RELEVANTC OASTS............................................................................... 156 

B.THE RELEVANTA REA..................................................................................161 

IV. COLOMBIA S PLACEMENT , ONSTRUCTION AND USE OFH ERPROVISIONAL

E QUIDISTANCELINE AREERRONEOUS IN HER OWN SCENARIO ...........................165 

V. THE PROVISIONALD ELIMITATIONLINEA PPROPRIATE TO THA REA TO BE

D ELIMITED.......................................................................................................... 178 

VI. THER ELEVANT CIRCUMSTANCES DO NOT REQUIRE ANA DJUSTMENT OF THE

P ROVISIONALD ELIMITATIONLINESPOSITED BYNICARAGUA ...........................184 

A.G EOGRAPHICALCIRCUMSTANCES ...............................................................185 

B.STATEP RACTICECONCERNING MINOR SLANDS NVOKED BY COLOMBIA ......199 

C.THE ALIGNMENT OFSAN ANDRÉS ANDP ROVIDENCIAEXACERBATES THE

INEQUITABLENATURE OFC OLOMBIA’SEQUIDISTANCELINE............................206 

VII. OTHERR ELEVANT CIRCUMSTANCES ...........................................................208 

A.EQUITABLE ACCESS TN ATURALR ESOURCES........................... .................. 209

B.SECURITYC ONSIDERATION........................................................................212 

VIII. ONCLUDING R EMARKS ........................................... ................................. 215

CHAPTER VII: COLOMBIA’S INVOCATION OF THE 82 ND MERIDIAN

AND HER TREATIES WITH THIRD STATES ..............................................217

I. HE 82°W M ERIDIAN GENERALLY .................................................................217 

II. HE 82°W M ERIDIAN AND THEM ARITIMEDELIMITATION.................. ......... 219

A.THE M ERIDIAN ALINE OD ELIMITATIO...................................................221 

B.THE M ERIDIAN APART OF THEFFECTIVITÉS............................................222 

C.THE ROLE OF THEM ERIDIAN ANSSESSING THEQUITABLECHARACTER OF THE

LINE...............................................................................................................227 
ND
III. HE82 M ERIDIAN ANDC OLOMBIA’SD ELIMITATIONTREATIES WITHTHIRD

S TATES...............................................................................................................230 

IV. CONCLUSIONS ............................................................................................... 232 

DECLARATION ..................................................................................................235 

SUBMISSIONS .....................................................................................................239 

LIST OF ANNEXES ............................................................................................. 243 

LIST OF FIGURES..............................................................................................245 

IV REPLY OF THE
GOVERNMENT OF NICARAGUA INTRODUCTION

1. This Reply is filed pursuant to the Orde r of the Court of 18 December
2008 that directed the Republic of Nicaragua to submit a Reply in the

case concerning the Territorial and Maritime Dispute ( Nicaragua v.

Colombia) and fixed 18 September 2009 as the time limit for the filing

of this pleading.

I. Procedural History

2. The Republic of Nicaragua brought th is case before the Court against

the Republic of Colombia by means of an Application filed on 6

December 2001 with an indication of the subject of the dispute that
was subsequently expounded in the Memorial filed on 28 April 2003.

In substance, Nicaragua asked the Court to adjudge and declare that

she had sovereignty over certain is lands and maritime features lying
off her Caribbean Coast and, furthermore, requested a maritime

delimitation between the Caribbean mainland coasts of Nicaragua and

Colombia.

3. The Republic of Colombia filed Preliminary Objections to the

jurisdiction of the Court on 21 July 2003 which included a request that

the Court adjudge and declare the controversy ended.

4. After hearing the Parties, the Court gave its decision by means of the

Judgment of 13 December 2007 by which it found:

“(3) As regards the jurisdiction of the Court,

(a) Unanimously,

1 Finds that it has jurisdiction, on the basis of
Article XXXI of the Pact of Bogotá, to

adjudicate upon the di spute concerning
sovereignty over the maritime features claimed
by the Parties other than the islands of San
Andrés, Providencia and Santa Catalina;

(b) Unanimously,
Finds that it has jurisdiction, on the basis of
Article XXXI of the Pact of Bogotá, to

adjudicate upon the di spute concerning the1
maritime delimitation between the Parties.”

5. After the Judgment on Preliminary Objections, Colombia filed a

Counter-Memorial on 11 November 2008 purs uant to the Court’s

order of 11 February 2008.

II. The Question of Sovereignty

6. The Application filed by Nicar agua on 6 December 2001 and her

Memorial of 28 April 2003 were in considerable measure based on

Nicaragua’s claim that “the Ba rcenas-Esguerra Treaty signed in
Managua on 24 March 1928 was not legally valid and, in particular

did not provide a legal basis for Co lombian claims to San Andrés and

Providencia” .2

7. On this question the Judgment of the Court of 2007 determined “that

the 1928 Treaty was valid and in force at the date of the conclusion of
3
the Pact of Bogotá in 1948” and “that the matter of sovereignty over
the islands of San Andrés, Providenc ia and Santa Catalina has been

1 Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007, operative clause, pp. 41-42, para. 142.
2NM, Vol. I, Submission 4, p. 266.
3 Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007, p. 27, para. 81.

2 settled by the 1928 Treaty”. 4 On this basis the Court decided that it

lacked jurisdiction on the basis of Articles VI and XXXIV of the Pact

of Bogotá and under the optional clause declarations “in so far as it
concerns sovereignty over the islands of San Andrés, Providencia and

Santa Catalina,” but that it had juri sdiction “in so far as it concerns

sovereignty over the other maritime features in dispute between the
5
Parties” .

8. With respect to the question of sovereignty, Nicaragua’s
understanding is that the effects of the Judgment of 13 December 2007

are limited to the preliminary questi on of jurisdiction that was before

the Court and is not a Judgment on the merits of the case filed by

Nicaragua on 6 December 2001.

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 Tr eaty 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.

4
Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
5bjections, Judgment of 13 December 2007, p. 28, para. 88.
Ibid, p. 42, para. 142.

311. The position of Nicaragua on th ese questions has been amply
explained in her Memorial and, whatever the ju risdictional limits

under which this case will proceed, the arguments and evidence

already filed by Nicaragua in this case will form part of the legal and

historical record of these proceedings.

12. Per the understanding explained in the preceding paragraphs, the

position of Nicaragua on the question of sovereignty will be based on

the stipulations of the 1928 Treaty. By this treaty Colombia in
substance recognized “the full and en tire sovereignty” of Nicaragua

over the Mosquito Coast (the Ca ribbean or Atlantic Coast of

Nicaragua) and over the Corn Is lands. Nicaragua for her part

recognized “the full and entire sovereignty” of Colombia over the San

Andrés Archipelago. The Treaty also stipulated that it “does not apply
to the reefs of Roncador, Quitasueño and Serrana” .

13. On the basis of the 1928 Treaty, th e 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 t hose not proven to be part of the

“San Andrés Archipelago” which is recognized in that Treaty to

appertain to Colombia. Colombia herself has explicitly recognized
this. In her Counter-Memorial she states:

“(T)he Court acknowledged that the whole
Archipelago belongs to Colombia. All that

Colombia needs to show at the merits stage is 7
that those cays do belong to the Archipelago.”

6
7See full text in NM, Vol. II, pp. 55-59, Annex 19, and below Chap. II.
CCM, Vol. I, p. 6, para. 1.9.

414. Although the burden of pr oof lies with Colombia to show what the

“San Andrés Archipelago” comprises, Nicaragua has offered evidence
8
both in her Memorial and in this Reply in Chapter I below, that at the

moment of independence, when title over territory was determined on
the basis of the well-known principle of uti possidetis iuris, the “San

Andrés Archipelago” was compri sed only of the Islands of

Providencia (and Santa Catalina), San Andrés and the Corn Islands 9.

In fact these are the only five is lands mentioned by name in the 1928

Treaty.

15. Colombia attempts to interpret the stipulation of the 1928 Treaty

which provides that it “does not apply” to three reefs (Serrana,
Roncador and Quitasueño) as meani ng that Nicaragua recognizes that

she has no sovereignty over these f eatures. As explained below in

Chapter I, Section III this is not what the Treaty says or means to say.

If that had been the intention of the Treaty, it would have said so in

words as clear as it used in recognizing the sovereignty of Colombia

over the “San Andrés Archipelago”. Furthermore, as also pointed out
10
below , the only reason why Serrana, Roncador and Quitasueño were

mentioned in the Treaty is because the United States was also
claiming them. Lastly, it should also be pointed out that if the Treaty

had disposed of the sovereignty over these three maritime features, the

Judgment of the Court of 13 December 2007 would have also

disposed of this Nicaraguan claim in the same way as it did with the

8NM, Vol. I, Chap. I, pp. 15-57, and 125-126, paras. 1.1-1.122 and 2.141.
9The Corn Islands are Big and Little Corn Island and are known by their Spanish
name of Islas del Maiz and also, specially by Colombia, as the Mangle Islands.
10At pp. 50-55, paras. 1.79-1.96.

5 question of sovereignty over the Is lands of San Andrés, Providencia
and Santa Catalina.

16. With respect to the other maritime features in dispute, including the
cays of Serranilla and Bajo Nuevo, which are not mentioned by name

in the Treaty, it should be pointed ou t that these features are entirely

equivalent to the other three whic h are identified by name. If they

were thought to be part of the “San Andrés Archipelago” they would
naturally have been mentioned. On the other hand, if Serrana,

Roncador and Quitasueño are themselves completely detached from

and located well to the north and the east of the islands of Providencia

and San Andrés, the two cays of Serranilla and Bajo Nuevo are even
further detached and quite distant even from Serrana, Roncador and

Quitasueño. The only connection of all these features is that they are

located off the mainland coast of Nicaragua and on her continental
shelf.

17. The Protocol of Ratification of th e 1928 Treaty stipulated that “the

San Andrés and Providencia Archipelago mentioned in the first clause
of the said Treaty does not extend west of the 82nd degree of longitude

west of Greenwhich”. Colombia has attempted to interpret this

meridian as a line of delimitation of maritime areas. In its 13
December 2007 Judgment the Court considered that,

“contrary to Colombia’s claims, the terms of
the Protocol, in thei r plain and ordinary
meaning, cannot be interp reted as effecting a

delimitation of the maritime boundary between
Colombia and Nicaragua . That language is
more consistent with the contention that the
provision in the Protocol was intended to fix

6 the western limit of the San Andrés
Archipelago at the 82 meridian.” 11

18. In spite of the clear language in the Protocol of Ratification that the
nd
“Archipelago” does not extend westward of the 82 meridian,

Colombia attempts to read into those words that the maritime areas of

Nicaragua do not extend eastward of that meridian. This is a
nonexistent limit that cannot curtail the rights over maritime areas

generated by the continental coast of Nicaragua. But what is even

worse than this capricious and self-serving addition to the wording of

the Protocol is Colombia’s persistent use of force and the threat of the

use of force and intimidation agains t Nicaraguan vessels in order to
nd
impose the 82 meridian as a line of delimitation in clear disregard of

the Judgment of the Court of 13 December 2007 . This last situation is
further explained below in Section IV of this chapter.

19. The Colombian Counter-Memorial highlights the main points of her
arguments as follows:

“At the end of the colonial period the

Archipelago was part of the Viceroyalty of
Santa Fe (New Granada).

Since independence Colombia has always

exercised sovereignty over the Archipelago, 12
including all the islands, islets and cays.”

And

“The Nicaraguan claim is based primarily on
an implausible interpretation of the uti
possidetis juris , an interpretation already

11 Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007, p. 34, para. 115.
12CCM, Vol. I, Chap. 1, p. 4, para. 1.6.

7 practically denied by the Court in the
Nicaragua v. Honduras case.” 13

20. Since, as explained above, the position of Nicaragua has been adjusted

to fit the jurisdictional limits determined by the Court, these assertions

could in principle be ignored as irrelevant to the questions over which

the Court has determined it has juri sdiction. In all events, the position
of Nicaragua on these que stions is clearly stated and documented in

her Memorial which is part of the record of this case.   But, to be

precise about the factual situation that existed at the time of

independence of both Parties, and which serves as the basis for

application of the principle of uti possidetis iuris, the following brief

summary is offered.

21. Colombia refers to the Royal Orde r of 1803 as if it were a definitive
and undisputed document demonstr ating that at the time of

independence the Caribbean Coast of Nicaragua and its appurtenant

off-shore islands were part of the colonial territorial division of which

Colombia is a successor State. This question is of course no longer at

issue in these proceedings, but for the record it is useful to recall the

following basic points:

13
CCM, Vol. I, pp. 1-3, para. 1.3. Colombia quotes literally (CCM, Vol. I, pp. 84
and 85, para. 3.10), and repeatedly uses in her arguments (CCM, Vol. I, pp. 287-
290, paras. 6.14-6.16), the assertion that the Court maen passant in pp. 45-46,
para. 161 of its Judgment of 8 October 2007 (Maritime Delimitation between
Nicaragua and Honduras in the Caribbean Sea, (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 precisley 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 dictum does not have the effect of
res iudicata.

8 1. Europe and its American Colonies were in the midst of the
Napoleonic upheaval and the col onies were taking their first

steps towards independence at the beginning of the XIX
century.

2. The Royal Order of 1803 was only a transfer of the military
defense of the area to the Vice Royalty of New Granada. The

only way to affect a total tran sfer was by means of a Royal
Decree (Cedula Real) which em anated directly from the
14
King.

3. In all events, this Royal Orde r was repealed by another Royal

Order of equal rank in 1806 confirming the total dependence
of this area to the Captaincy General of Guatemala of which
Nicaragua is a successor State.15

4. The last law of the Kingdom of Spain that provided for the

territorial division of the Ameri can Colonies is contained in
the Constitution of Spain that was approved in the Parliament
called “General and Extraordinary Cortes” that convened in

Cadiz, Spain from 1810 to 1812 during the so-called
Peninsular War to expel the Napoleonic armies. The Corte or

Parliament had representatives from the colonies including
from what is present day Nicar agua and Colombia. Article 10
of this Constitution (1812) divided the territories of America

from Mexico to the Strait of Magellan in two parts: America
Septentrional (Northern America) that reached from Mexico to

the southern limit of the Audiencia de Guatemala at the present
day border between Costa Rica and Panama; and America
Meridional (Southern America) that reached from this Costa

Rica/Panama border to the Strait of Magellan. Each
hemispheric half included its co asts and adjacent islands. The

Vice Royalty of New Granada, of which Colombia is a
successor state, was in the southe rn half and hence could have

14
15See NM, Vol. I, pp. 31-35, paras. 1.48-1.58.
NM, Vol. I, pp. 39-43, paras. 1.69-1.79.

9 no coasts or adjacent islands in the America Septentrional that
16
began on the border of present day Costa Rica/Panama.

22. There are at least two important moments in which third parties

analyzed the validity of the Colombian claims based on the Royal

Order of 1803.

1. The first is a note from Mr. Fr ederick Chatfield, the British

Charge d’Affaires to Central America, dated 15 April 1847
and addressed to Viscount Palm erston at the Foreign Office.

This lengthy note provides a careful analysis of the claims of
Colombia at the time based on her alleged titles as successor of

the Viceroyalty of Santa Fe (N ew Granada). His conclusions
are basically those stated above : that the Royal Order of 1803

did not transfer and was not the adequate instrument for
transferring the Caribbean Coas t and its adjacent islands to
17
Colombia.

2. Since Colombia’s claim on the basis of the Royal Order of
1803 was over the Mosquito Coast which included not only the

present day Nicaraguan Cari bbean Coast but also the
Caribbean Coast of Costa Rica, this territorial dispute was
submitted to arbitration by the President of France, Emile

Loubet, who in his Award decided that the Caribbean Coast
appertained to Costa Rica. 18

23. Colombia must naturally be aware that further discussion on these
19
points in the present case is largely academic and presumably

16See the Memorandum Explanatory of the Controversy between Nicaragua and
Colombia, dated 1924, and reedited by the Ministry of Foreign Affairs of Nicaragua
in 1981, pp. 97-102, deposited with the Registry as Doc. 5.
17
18See NM, Vol. II, pp. 247-250, Annex 77.
See NM, Vol. I, pp. 52-54, paras. 1.106-1.111 and NM, Vol. II, p. 65, Annex 21
19d p. 251, Annex 78.
Colombia dismissively asserts that she “responds to the positions taken in
Nicaragua’s Memorial of 28 April 2003, to the extent these positions may have

10 highlights them for what she consid ers might be thei r impressionistic

effect. In that same vein, the following facts might be recalled:

1. The negotiations and basic provisions of the agreement that

culminated with the 1928 Treaty were proposed by

Colombia. Nicaragua was unwilling to enter into this

Treaty and proposed arbitration. It was the intervention of
the United States that was occupying Nicaragua at the time

that led to the signing and ratification of the 1928 Treaty 20.

2. With the 1928 Treaty Colombia “relinquished” her claims

to the extensive Nicaraguan Caribbean Coast in exchange
for receiving a few off-s hore islands which, in 1928-1930,

were entirely irrelevant to any claims to maritime spaces

beyond their 3-nautical-mile territorial sea.

24. The common sense question is: If Colo mbia’s colonial titles based on
uti possidetis iuris were legally sustainable why would Colombia be

willing (and anxious) to enter into a Treaty which would give her

much less than the famous 1803 Roya l Order purported to do? Due to

the limits of the jurisdiction in this case, that question will go

unanswered. But, of course, Nicaragua knows the answer. And
Colombia also knows it very well.

survived the Court’s Judgment on Preliminary Objections of 13 December 2007 .”
20M, p. 1, para. 1.1.
See, generally, NM, Vol. I, Chap. II.

11 III. Maritime Delimitation

25. Although the Court’s Judgment did not directly affect Nicaragua’s

request for a maritime delimitation, it provoked her to review her
general position and to undertake a more detailed analysis of the

question of delimitation, including additional geological and

hydrographic studies of the area. Nicaragua’s original position on

maritime delimitation as expressed in her Memorial requested the

Court to adjudge and declare that:

“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 median line between
21
these mainland coasts.”

26. After a review of the situation Nica ragua has decided that her request

to the Court should be for a contin ental shelf delimitation. As will be

explained in the course of this pl eading, the result of this delimitation
will be to completely delimit the maritime areas appertaining to

Nicaragua and to Colombia and, hen ce, in this respect it will be the

only pertinent or single maritime boundary affecting the Parties.

27. The extent of the natural prolongat ion of the Nicaraguan continental
shelf in the area of the delimitation is a physical fact that can be

verified scientifically with data that are in the public domain. Even a

superficial review of any map wi th contours of the floor of the
22
Caribbean Sea (see e.g. Figure 1 ) would show to the even

inexperienced eye that the Nicaraguan continental shelf is very

21
22NM, Vol. I, Submission (9), pp. 266-267.
The Figures presented are for illustration purposes only, except where coordinates
are indicated.

12 extensive, and reaches eastward well beyond 200 nautical miles from

Nicaragua’s more than 450 kilometers long Caribbean coast.

28. Although the continental shelf of Colombia, which projects

northwestward from her Caribbean Coast, is considerably less

extensive than Nicaragua’s, it nevertheless meets and overlaps with

Nicaragua’s continental shelf, such that there is need of delimitation.

29. On the continental shelf of Nicaragua are located a few islands and
several cays the sovereignty over which is in dispute between

Nicaragua and Colombia but which, in whatever way this issue is

determined, do not significantly affect a delimitation involving the

mainland coasts of Nicaragua and Colombia. In her Memorial,

Nicaragua had indicated that if these features are found to appertain to
Nicaragua, then they should simply be considered as located on her

continental shelf for the effects of a delimitation, and if any of these

features were found to be Colombian, they should be enclaved, and in

respect of San Andrés and Providenc ia be “accorded a territorial sea
23
entitlement of twelve [nautical] miles” and any other features found

to be Colombian should be accorded an enclavement area of three
nautical miles. This request is maintained and reiterated in this Reply.

30. The “San Andrés Archipelago” incl uding all the features claimed by
Colombia and disputed by Nicarag ua has a total area of about 17

square miles (44 km²), according to the Encyclopedia Britannica . 24

Apart from the minor features over which sovereignty is still an issue,

the fundamental question that is before the Court by virtue of

23
24NM, Vol. I, Submission 7, p. 266.
http://www.britannica.com/EBchecked/topic/520947/San-Andres-y-Pr. See Chap.
II below.

13 Colombia’s Counter-Memorial is Colombia’s claim, based on her

putative sovereignty over these few s quare kilometers of islands and
cays located off the extensive mainland coast of Nicaragua and

situated on her continental shelf, to over 100,000 square kilometers of

maritime areas that otherwise would indisputably be universally

recognized to be Nicaraguan.

31. The position of Colombia in her Counter-Memorial is that the

maritime delimitation does not involve the mainland coasts of
Nicaragua and Colombia but consists of an equidistance line drawn

between the islands fringing the mainland coast of Nicaragua and
nd
located west of the 82 meridian with the “San Andrés Archipelago”,

which she understands to comprise any rock cropping its head out of
the waters off the mainland coast of Nicaragua and located east of the

82ndmeridian. On the basis of this exercise of wishful thinking,

Colombia presumes that Nicaragua’s maritime areas are limited to an

area of approximately 50 miles off her mainland coast, whilst
Colombia’s “archipelago” will absorb all the rest which, even in this

restricted delimitation area, would imply that Colombia would receive

approximately 75% of all the maritime areas to be delimited. This

Colombian scenario would confine the maritime delimitation to a

restricted area and would totally ignore Nicaragua’s mainland coast
and continental shelf, on which ar e located, according to Colombia’s

claim, the innumerable pieces of the “archipelago”.

32. The Colombian Counter-Memorial has been true to form with respect
to her blown up ambitions on questions of maritime delimitation. The

position of Colombia, which she has for decades imposed by force on
nd
Nicaragua, is that the 82 meridian West was a line of maritime

14 delimitation between the Colombian “San Andrés Archipelago” 25and

the Caribbean Coast of Nicaragua. With the Judgment of 13 December

2007 having determined that this me ridian was not a line of maritime
nd
delimitation, Colombia has now cons idered that her claim to the 82

meridian was in reality a concession that benefited Nicaragua and that
based on her interpretation of the law, the line of delimitation should

extend even further west of this me ridian, cutting even more deeply

into Nicaragua’s maritime areas.

33. The evident truth is that Colombia is well aware that even if she could
maintain her claim of sovereignty over San Andrés and Providencia, it

would be unthinkable that any Tr ibunal would determine that an

equitable delimitation between these islands and the mainland coast of

Nicaragua could possibly be based on an equidistance line between
nd
these two areas. That is why she chose to claim the 82 meridian as a

line of delimitation. And that is w hy Colombia’s present attempt to

even go beyond this preposterous claim, is beyond any words that
could properly be used in this Reply.

IV. Colombia’s Continued Imposition of the 82 Meridiannd

34. The legal analysis of the im plications, if any, of the 82 nd meridian to

the present case is developed in Chapter VII below. At this point, the

review is limited to a summary desc ription of the way this meridian

has been imposed on Nicaragua as a line of delimitation.

25Nicaragua’s position is that the so called “San Andrés Archipelago” refers only to
the island of San Andrés and the island of Providencia. When reference is made to
the island of Providencia, this will genera lly include the very small island of Santa
Catalina which is separated from it by a narrow channel. See below Chap. II, Sec.
B.

1535. Colombia confidently asserts that she “has consistently exercised

maritime jurisdiction over the waters of the Archipelago up to the 82º

W meridian, the limit established by the 1928/1930 Treaty.” 26What is

undeniably true is that Colombia has consistently used her enormously

superior military forces to impose this meridian as a limit on

Nicaraguan vessels. It is certainly u ndeniable that Colombia has been

successful in blocking any possibil ity for Nicaragua to enter these
maritime areas for any purpose including exploration.

36. The Nicaraguan Memorial documents the events that led to

Colombia’s first claim that this meridian was a line of delimitation of

maritime areas by a note of 4 June 1969. 27 The Colombian claim was

made in reaction to certain conc essions for oil exploration that
nd
Nicaragua had granted in areas east of the 82 meridian. This claim

was enforced by the Colombian navy. There are two diplomatic notes

dated 7 October 1972 sent by the Mi nister of Foreign Affairs of

Nicaragua to the Minister of Fore ign Affairs of Colombia and the
Secretary of State of the United St ates, respectively, complaining of

the use of force by Colombia in or der to impose her claim over all

maritime areas east of the 82 meridian. The note to the Secretary of

State is particularly telling in expressing “the profound surprise

caused by the news it has received regarding the utilization by the

Colombian Government, through the use of warships recently

obtained from Your Excellency’s G overnment, is engaging the use of

26
27CCM, Vol. I, p. 5, para. 1.6.
NM, Vol. I, pp. 153-155, paras. 2.203-2.205, and Vol. II, pp. 101-110, Annexes
28 and 29.
28NM, Vol. II, pp. 125-132, Annexes 34 and 35.

16 force to resolve a difference that should be resolved according to the

principles recognized by International Law.” 29

37. As could be expected, no other a ttempts by Nicaragua were made

regarding the exploration for oil since the time these concessions were
granted in the 1960s. No responsib le oil company was willing to

accept the risk to their vessels and employees of being captured by the

Colombian navy. Since then, the more adventurous or needier

fisherman and other workers of the sea have occasionally ventured

into this area and been accosted or captured by Colombian military

forces. Some of these incidents are listed in the Nicaraguan
30
Memorial.

38. These examples could be brought up to date with another list of

incidents that have occurred whilst this case has been before the

Court, but their only purpose would be to prove what is already

evident: that Colombia effectively has imposed a naval blockade
nd
restricting the navigation of Ni caraguan vessels east of the 82
31
meridian .

39. The point that must be emphasized is that after the Judgment of 13
December 2007 in which the Court concluded “that the 1928 Treaty

and 1930 Protocol did not effect a general delimitation of the maritime

boundary between Colombia and Ni caragua” and that the Treaty’s

language was “more consistent with the contention that the provision

29NM, Vol. II, p. 131, Annex 35.
30NM, Vol. I, pp. 159-162, paras. 2.216-2.222.
31Complying with the Court’s Practice Directions III regarding the excessive
tendency towards the proliferation and protraction of annexes to written pleadings,
Nicaragua will limit herself to highlighting some of the recent incidents. See NR,
Vol. II, Annexes 7-10.

17 in the Protocol was intended to fix the western limit of the San Andrés
Archipelago at the 82 ndmeridian” , Colombia has continued to

impose this meridian as if it were a line of delimitation.

40. This prompted the Nicaraguan Government to send a communication

on 14 February 2008 addressed to the Secretary-General of the United

Nations informing him and all the Member States of the Organization

that in spite of the Judgment of the Court, Colombia had announced

that she would continue and in f act had continued enforcing the 82 nd

meridian as a line of delimitation. Th e letter indicated that “[a]s well

as making public declarations, the Colombian authorities have used

force to prevent Nicaraguan vessels from going about their business to

the east of the 82 nd meridian.” 33

41. Colombia for her part responded with a letter dated 29 February 2008

addressed to the Secretary-General of the United Nations in which she

unambiguously recognized that Co lombia was continuing to impose
nd
the 82 meridian. In pertinent part it states that “Colombia has made

every effort to ensure that ships flying its flag do not engage in fishing
nd
or other activities west of the 82 meridian. In tur n, it has continued

to take routine measures designed to ensure that any fishing vessel

that engages in activities to the east of that line has been licensed to do
34
so by the competent Colombian authorities.”

32 Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007 , respectively p. 36 para. 120 and p. 34,
para. 115.
33 See NR, Vol. II, Annex 5.
34 See NR, Vol. II, Annex 6.

1842. It is at the very least ironic that Colombia should presume to evince
the existence of a “practice” by the Parties, that is by Nicaragua,

attesting to the acceptance of this meridian as a line of delimitation.

As is eminently obvious, Nicarag ua has always responded by all

means short of the use of force, against this Colombian imposition
since it was first initiated.

nd
43. Colombia’s imposition by force of the 82 meridian as a maritime

boundary is in breach of her obligat ions under the rules of customary
International Law. Nicaragua is th erefore requesting a declaration to

this effect and claiming compensation for the damages suffered (see

below pages 235 to 239).

V. Summary of the Reply

44. The Reply is divided in two parts: Pa rt I will address the issue of
sovereignty (Chapter I) and Part II (Chapters II through VII) will

address maritime delimitation. Chapter II contains the legal

framework including the criteria and principles involved in the

delimitation. Chapter III addresses the legal and technical
considerations for a continenta l shelf delimitation. Subsequently,

Chapter IV analyzes the physical and certain legal aspects of the

maritime features located on the continental shelf of Nicaragua.

Chapter V justifies the enclaving of these maritime features as the
only way of producing an equitable delimitation. Chapter VI analyzes

the errors and inequities of th e maritime delimitation proposed by

Colombia that would give full e ffect to all her claimed maritime

features on the Nicaraguan contin ental shelf, and the inequitable
results of even giving partial effect to any of these features. Finally,

Chapter VII addresses the irrelevance of the 82 ˚ W meridian to the

19delimitation of a maritime boundary between Colombia and

Nicaragua.  

20 PART I

THE ISSUE OF SOVEREIGNTY CHAPTER I

THE ISSUE OF SOVEREIGNTY

I. Introduction

1.1. The Judgment of the Court of 13 December 2007 on the Preliminary
Objections raised by Colombia determined that its jurisdiction is only

available for certain aspects of th e territorial dispute between the

Parties. Nicaragua has explained above in the Introduction to this
35
Reply that with the reservations therein made she will adapt the

original Application filed in the Court on 6 December 2001 and the
arguments and submissions in her Memorial of 28 April 2003 to the

limits of the jurisdiction determined by the Court in its Judgment.

1.2. Therefore the questions of sovereignty dealt with in this Reply will be
36
based on the declaration by the Court that the 1928 Treaty is valid

and settled the territorial dispute in accordance with its terms at the
time of the conclusion of the Pact of Bogotá.

1.3. The conclusion reached by Nicaragua is that based on the text and

objectives of the Treaty as stated in its Preamble, it “put[s] an end to

the territorial dispute pending betw een” the Parties. That is, all

questions relating to the territori al dispute can be resolved by
reference to this Treaty.

1.4. The other issues raised in the Nicaraguan Memorial and addressed in

the Colombian Counter-Memorial with respect to questions of uti

35See above p. 3, paras. 8-10.
36For the full text of the Treaty and the Protocol of Ratification, see NM, Vol. II, pp.
55-59, Annex 19.

23 possidetis iuris and the validity of the 1928 Treaty are not relevant to

the claims extant within the limits of the jurisdiction afforded by the

Court.

II. History of the Dispute on Sovereignty

1.5. The territorial dispute between Nicaragua and Colombia dates back to

the period of independence of both Parties from Spain in the early

XIX century. A brief history of th e dispute may be reviewed in the
37
Nicaraguan Memorial .

1.6. The position of Ni caragua in her Memorial was to assert her

traditional claim of sovereignty over the Mosquito Coast and over all

features lying offshore of it including the adjacent islands of San

Andrés and Providencia, based on the uti possidetis iuris at the
38
moment of independence from Spain .

1.7. The position of Colombia, disputed by Nicaragua, was that at the time
of independence from Spain, by a Royal Order dating from 30

November 1803 39 the King had segregated from the territory, that

later was to become Nicaragua, the Mosquito Coast and the “Islands

of San Andrés” and incorporated them into the colonial dependency of

which Colombia was a part and became the successor State at

independence.

1.8. On 24 March 1928 a Treaty was signed by Nicaragua and Colombia

with the stated purpose of putting an end to this dispute. The Treaty

stipulated in Article I that,

37NM, Vol. I, pp. 2-9, paras. 4-21.
38NM, Vol. I, Chap. pp. 15-58.
39CCM, Vol. II-A, p. 121, Annex 22.

24 “The Republic of Colombia recognizes the full
and entire sovereignty of the Republic of

Nicaragua over the Mosquito Coast between
Cape Gracias a Dios and the San Juan River,
and over Mangle Grande and Mangle Chico
Islands in the Atlantic Ocean (Great Corn

Island and Little Corn Island). The Republic of
Nicaragua recognizes the full and entire
sovereignty of the Republic of Colombia over
the islands of San Andrés, Providencia and
Santa Catalina and over the other islands, islets

and reefs forming part of the San Andrés
Archipelago.

The present Treaty does not apply to the reefs

of Roncador, Quitasueño and Serrana,
sovereignty over which is in dispute between
Colombia and the United States of America” . 40

1.9. The Ratification of the 1928 Tr eaty on 5 May 1930, included the

signature of a special Protocol to the effect that:

“The undersigned, in virtue of the full powers
which have been granted to them and on the
instructions of their respective Governments,

hereby declare that the San Andrés and
Providencia Archipelago mentioned in the first
clause of the said Treaty does not extend west
of the 82 nd degree of longitude west of
41
Greenwich” .

1.10. The position of Nicaragua as explained in her Memorial was that the
42
1928 Treaty was not valid and that sovereignty had remained with

Nicaragua on the basis of the uti possidetis iuris at the moment of

40
41NM, Vol. II, p. 56, Annex 19.
NM, Vol. II, p. 59, Annex 19. Ibid at p. 59.
42NM, Chap. II, Sec. II: The invalidity of the Treaty, pp.108-124, paras. 2.102-
2.138.

25 independence since the Royal Or der of 1803 did not have the

necessary legal requirements to effect a complete transfer of the

administration of those areas durin g the colonial period, but only for

its military protection. Colombia disagreed on both counts.

1.11. In its Judgment of 13 December 2007 on the Preliminary Objections
raised by Colombia, the Court considered:

“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 refe rence 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
43
jurisdiction under Article XXXI thereof.”

And

“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.” 44

1.12. And on this basis the Court found unanimously:

“that it has jurisdiction, on the basis of Article
XXXI of the Pact of Bogotá, to adjudicate

upon the dispute concerning sovereignty over
the maritime features claimed by the Parties
other than the islands of San Andrés,
Providencia and Santa Catalina.” 45

43
Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007, p. 27, para. 81.
44Ibid, p. 28, para. 88.
45Ibid, p. 42, para. 142.

26 III. Consequences of the Validity of the 1928 Treaty

1.13. By the 1928 Treaty Colombia r ecognized “the full and entire

sovereignty of the Republic of Ni caragua over the Mosquito Coast
46
between Cape Gracias a Dios and the San Juan River” . The result of
this recognition is that Nicaragua is the undisputed title holder of any

and all rights that she could claim to the Mosquito Coast at the date of

signature of the Treaty in 1928, in cluding those rights devolving on

her as successor State of the coloni al power at independence in 1821.

Furthermore, based on this recognition by Colombia, Nicaragua could

also claim any and all rights Colombia had at the moment of signature
of the Treaty including her purported rights of uti possidetis iuris over

the Mosquito Coast based on the Royal Order of 1803. In sum,

Nicaragua has original and derivati ve rights of sovereignty over the

Mosquito Coast and its appurtenant maritime features.

1.14. Nicaragua for her part recognized “the full and entire sovereignty of
the Republic of Colombia over the islands of San Andrés, Providencia

and Santa Catalina and over the other islands, islets and reefs forming

part of the San Andrés Archipelago.” 47 The result is that Colombia

also acquired similar rights over whatever was understood to comprise

the “San Andrés Archipelago” at the time of independence.

1.15. 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 time of the

46NM, Vol. II, p. 56, Annex. 19.
47Ibid.

27 independence of Colombia in 1810. This means that it is necessary to

define what was understood to be comprehended within the concept of

“Costa de Mosquito” and of “San A ndrés Archipelago” at the time of
independence in order to determine what one Party recognized to the

other. The analysis of these questio ns is developed in Sections B and

C below.

1.16. The practical effect is that it is not necessary for Nicaragua or

Colombia to seek to prove the better original title over the Mosquito
Coast and over the “San Andrés Archipelago” since each Party

acquired through the 1928 Treaty any title the other Party had in 1928,

which included any title based on uti possidetis iuris over these areas

at independence. If Colombia had the better title over the Mosquito

Coast and all it comprehended at th e moment of independence, then

this title was transferred to Nica ragua at the moment the 1928 Treaty
was ratified. This eliminates the need for a substantial amount of

argument that was presented in the Nicaraguan Memorial 48and in the
49
Colombian Counter-Memorial .

1.17. Therefore, the arguments and evidence in this Part of the Reply
dealing with questions of sovereig nty and title over territory will be

addressed to interpreta tion of the 1928 Treaty in order to determine

what area was being recognized by each Party as pertaining to the

other, and specifically of establishing what was considered to be part

of the Mosquito Coast in 1821 or 1810 and what was understood to

conform the “San Andrés Archipelago” in those dates.

48See NM, Chap. I, pp. 15-58, paras. 1.1-1.122.
49See CCM, Chap. 3, pp. 79-147, paras. 3.1-3.156 and Chap. 4, pp. 149-239, paras.
4.1-4.189.

28 A. INTERPRETATION OF THE 1928T REATY

1.18. Article I of the 1928 Treaty contains two paragraphs . The first deals

with the question of sovereignty over the Mosquito Coast and over the

San Andrés Archipelago, and the s econd stipulates that the Treaty

does not apply to the reefs of Roncador, Serrana and Quitasueño.

1.19. With respect to the meaning of the first paragraph, in its Judgment of

13 December 2007 the Court considered

“that it is clear on the face of the text of the
first paragraph of Article I of the 1928 Treaty

that its terms do not provide the answer to the
question as to which maritime features apart
from the islands of San Andrés, Providencia
and Santa Catalina form part of the San Andrés

Archipelago over which Colombia has
sovereignty. That being so, this matter has not
been settled within the meaning of Article VI
of the Pact of Bogotá and the Court has

jurisdic51on under Articl e XXXI of the act of
Bogotá” .

1.20. The Court thus considered that the Treaty did not identify what

maritime features were being attributed to Colombia apart from the

three specifically mentioned by name in the Treaty, but the other side
of this question was not spelled out; that is, what features apart from

those explicitly forming part of the San Andrés Archipelago are

appurtenances of the Mosquito Co ast and the Corn Islands? From

Nicaragua’s point of view, the only l ogical answer to this question is

that all features that are not prove n to be part of the “San Andrés

Archipelago” of necessity are appurtenances of the Mosquito Coast.

50See pp. 24-25, below, para. 1.8.
51 Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007, pp. 30-31, para. 97.

291.21. In Colombia’s view, the San Andrés Archipelago is formed by all the

maritime features that she claims to the east of the 82 ndmeridian, no

matter their latitude or distance from each other. They are enumerated

in paragraph 2.5 of her Counter-Memorial and described in
52
paragraphs 2.6 to 2.32, with the support of some maps . According

to Colombia all these features formed a group throughout the colonial
53
and postcolonial era .

1.22. As will be seen below 54the “San Andrés Archipelago” was not a

Caribbean Hydra with numberless heads stretching from Cartagena

(Colombia) to Havana (Cuba) as the Colombian Counter-Memorial

tries to bring to life55. Nor was the Mosquito Coast only a beach head

from which to observe this endle ss and unique “Archipelago” of two

small islands that according to Colombia generated rights in the

greater part of the extensive we stern Caribbean superseding those

rights of the mainland coast over any feature that might show its head

above water at low tide.

1.23. Interpretation of the Treaty requires attention to two other points. The

first point concerns to the second paragraph of the Treaty. The Court

has already determined that:

“the meaning of the second paragraph of
Article I of the 1928 Treaty is clear: this treaty
does not apply to the three maritime features in

question. Therefore, the limitations contained
in Article VI of the Pact of Bogotá do not

52
CCM, Vol. I, pp. 17, 19, 21, 23, 25, 27, 29, 31, Figures 2.1-2.8; full size: Vol. III
53ps, pp. 3-15.
54CCM, Vol. I, pp. 36-60, paras. 2.33-2.77.
55See below pp. 44-50, paras. 1.64-1.78.
CCM, Vol. I, pp. 39-40, para. 2.41.

30 apply to the question of sovereignty over
56
Roncador, Quitasueño and Serrana” .

1.24. Colombia claims that the wording of this second paragraph of Article

I implies that Nicaragua was rec ognizing that these cays were not
Nicaraguan but that they either ap pertained to Colombia or to the

United States of America 57. Nicaragua’s position on the other hand, is

that this is not what the words of the Treaty plainly say; nor is it a

correct interpretation of their intention or meaning as will be

explained below 58.

1.25. The second point relates to the 5 May 1930 Act of Ratification of the

1928 Treaty. This affords another important element for determining

what features appertained or did not appertain to the “San Andrés

Archipelago”. The Protocol declared that:

“the San Andrés and Providencia Archipelago

mentioned in the first clause of the sndd Treaty
does not extend west of the 82 degree of
longitude west of Greenwich.” 59

1.26. It is clear from the wording that this Protocol was not setting any

special limits to Nicaragua and her Mosquito Coast but only to the

“San Andrés Archipelago”. This language made it clear that there
nd
were no Colombian islands or other features west of this 82 meridian

but it set no limit to any Nicaraguan territory east of that meridian.

1.27. On the general question of interp retation Nicaragua considers that

special attention should be paid to the political, economic and military

56
Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
57jections, Judgment of 13 December 2007, p. 32, para. 104.
58CCM, Vol. I, p. 254, paras. 5.27-5.28.
59See below pp. 50-55, paras. 1.79-1.96.
NM, Vol. II, p. 59, Annex 19.

31 situation Nicaragua was subjected to at the time of the negotiation and

signature of the 1928 Treaty. The Cour t has found that the validity of

the Treaty cannot be considered in these proceedings but that does not

erase the past or eliminate the need to take into consideration the

context in which the Treaty was signe d in order to properly interpret

it.

1.28. The Nicaraguan Memorial contains a detaileddescription of the

process of negotiation of the 19Treaty and the conditions under

which Nicaragua functioned during that period.aragua considers

that the 13 December 2007 Judgment of the Court does not make

irrelevant these facts for the proper interpretation of the Treaty.

B. WHAT M ARITIME FEATURES FORM PART OF THE SAN ANDRÉS

A RCHIPELAGO OVER WHICH THE SOVEREIGNTY OF COLOMBIA W AS
RECOGNIZED BY NICARAGUA IN PARAGRAPH 1OF A RTICLEIOF THE

1928 TREATY ?

1. Uti possidetis iuris

a. International Law principle binding on the Parties

1.29. The doctrine of the uti possidetis juris (uti possidetis ita possideatis )

has been described as conflating “boundary and territorial questions

by assuming as a governing principle that boundaries must be as they

were in law at the declaration of independence; viz 1810 for former

Spanish colonies in South America and 1822 [sic] for those in Central

60See NM, Vol. I, Chap. II, especially pp. 59-124.

32 America. It is a necessary part of this doctrine that there could have
61
been no terra nullius in those parts at those times.”

1.30. This doctrine or principle of international law is also treaty law for the
Parties on the basis of the Treaty of “Perpetual Union, League and

Confederation” signed in Bogota on 15 March 1825 by Colombia and

the United Provinces of Central Am erica. Article VII of the treaty

embodied this doctrine in the following words: “the Republic of

Colombia and the United Provinces of Central America, oblige and

bind themselves to respect thei r boundaries as they exist at
present…” 62.

1.31. This position reflected the international practice and the internal legal

systems of the Parties at inde pendence. Thus, shortly after

independence, on 19 June 1824 the Foreign Minister of the Republic

of Colombia, Pedro Gual, addressed a letter to the Commander-in-

Chief of the British Naval Forces in the West Indies, Vice-Admiral Sir
Lawrence Halstead. In this, he expressed that “in our primitive

constitution, as well as in the one promulgated in a more solemn

manner on 18 July 1821, it was stipul ated that the limits of the

Republic (of Colombia) would be those that Venezuela and New

Granada would have when they were subject to the jurisdiction of the
63
King of Spain.”

1.32. In this communication Minister Gual directly applied the principle of

uti possidetis iuris to Colombia’s claim over the Mosquito Coast and

the islands of San Andrés. Minist er Gual indicated to Admiral

61Oppenheim’s International Law, 9th Ed, Edited by Sir Robert Jennings and Sir
Arthur Watts, Longman, Vol. I, Part 2, p. 669.
62NM, Vol I, p. 21, para. 1.23.
63CCM, Vol. II-A, p. 127, Annex 24.

33 Halstead that the limits of New Granada (of which Colombia was a

successor State), “reached the coas ts neighboring the island of

Jamaica until, and including, Cape Gracias a Dios, with the islands of

San Andrés, Vieja Providencia and other adjacent ones. The stretch of
coast comprised between Cape Grac ias a Dios and the Chagres River

belonged to the Captaincy-General of Guatemala for a while, but all

this territory was definitely ascribed to the New Granada, on 30
64
November 1803.”

1.33. The first Constitution of Central America (of which Nicaragua is a

successor State) dates from 22 November 1824 and provides that “The

territory of the Republic is that which formerly comprised the Ancient
Kingdom of Guatemala.” 65

1.34. Therefore, any determination as to sovereignty over the territory

located off the coast of Nicaragua, or as to the extent of any part of

that territory including territorial components of the “islands of San

Andrés” or of the “Archipelago of San Andrés”, has to be effectuated

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

1.35. This was the practice followed when Colombia and Costa Rica

submitted to the arbitration of President Loubet of France in 1900, the

question of sovereignty over that part of the Mosquito Coast that is the

present day Caribbean Coast of Costa Rica. The legal questions

decided by the Arbitrator where ba sed on the colonial titles of both

64CCM, Vol. II-A, p. 127, Annex 24. So me years after this note, the British
Representative to Central America gave his own opinion of the lack of merits of this
1803 document. See this reference above Intro. p. 10, para. 22 and in NM, Vol. II, p.
247, Annex 77.
65NM, Vol. I, p. 19, para. 1.16.

34 Parties and in particular on the Royal Order of 1803 which was the
66
basis of Colombia’s claim to sovereignty over that coast.

1.36. Any claims of acquisition by any other title than that based on uti
possidetis iuris would be a direct violation of this doctrine and of the

1825 Treaty.

b. Uti possidetis iuris and small maritime features

1.37. It is also true, as pointed out in the Oppenheim edition cited above,

that this doctrine “owing to the uncertainty of many of the Spanish

colonial administrative boundaries at that time, especially in remote

and often unexplored areas, has not always led to a ready and certain
67
answer.” But this uncertainty is not relevant in the present
circumstances. Uncertainty might occur in determining sovereignty

over maritime features not easily attributable because they were

located near two adjacent States or they were located between States

facing each other at a relatively close distance in which it was difficult

to determine the respective sovereignt y of either one based strictly on
colonial documentation. In such situations, the effective possession of

one or the other as dem onstrated by means of effectivités has been a

means of resolving these disputes.

1.38. In the present circumstances, apart from the presumption implicit in

the doctrine of uti possidetis iuris against the existence of terra nullius
in the Americas, the maritime features in dispute were known and had

been surveyed by the Spanish author ities during the colonial period.

Without going into unnecessary lengths of investigation and

burdening the issue with numerous records, it is enough to cite the

66See NM, Vol. I, pp. 52-54, paras. 1.106-1.110.
67Op cit., p. 670.

35 document annexed by Colombia in her Counter-Memorial which

contains the sailing directions ( derrotero) of the Spanish Navy in
68
1820 . This document describes most of the cays at issue in this case:
the cays of Albuquerque, East-S outheast, Roncador, Serrana,

Serranilla and Bajo Nuevo. There is no dispute that the maritime

features described were known duri ng colonial times and had been

surveyed by the colonial sovereign shortly before the independence of

Central America in 1821.

1.39. The question then is whether these maritime features during the

colonial times and at independen ce would have been considered

appurtenances of the mainland coast or separate territorial entities. In

the present case, we are not deal ing with an important island like

Hispaniola or Jamaica that naturally has its own separate territorial

existence. Here we are dealing with respect to minor features like San
Andrés, Providencia and the Corn Islands, with a small area and a

population during colonial times and at independence that would not
69
have exceeded a few hundred inhabitants. It would seem illogical

that the Spanish colonial Empire would have treated these small

features independently of the main land coasts to which they were
naturally attached. In fact this was the case, as explained below.

1.40. During the colonial period the islands and other maritime features off

the mainland coasts were considered as appertaining to these coasts.

Thus the limits of the Audiencia de Guatemala (to which Nicaragua is

a successor State) were fixed by R oyal Decree (Cédula Real) of 28

68CCM, Vol. II-A, p. 615, Annex 172, see also below pp. 43-44, paras. 1.60-1.62.
69The recognizance made by Lieutenant del Río in 1793 indicated that the
population with the then recent influx of English amounted to “including all the
islands to 556 individuals”. See NM, Vol. II, p. 6, Annex 3.

36 June 1568 and confirmed in 1680 by Statute VI, Title XV, Book II of

the Compilation of the Indies which stipulated:

“And let said Province of Guatemala as well as
those of Nicaragua, Chiapas, Higueras, Cabo
de Honduras, Vera-Paz and Soconusco, with

the islands adjacent to the coast , bounded on 70
the east by the Audiencia of Tierra Firme…”

1.41. The Royal Order of 1803 on which Co lombia so heavily relies does

not purport to separate the islands by themselves from the jurisdiction

of the Captaincy General of Guatemala or from the Mosquito Coast. 71

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 islas adyacentes sobre el Pacifico y el Atlantico) .72

1.42. In the note sent by the Colombian Minister Gual in 1824 to the British

Admiral, quoted above in paragraph 1.32, he refers to “the islands of

San Andrés, Vieja Providencia and ot her adjacent ones”; that is, he

precisely identifies them as adjace nt to the present day Nicaraguan

coast which was also claimed by Colombia at that time.

1.43. The understanding that the Span ish sovereign recognized the

territorial attachment of the islands to the mainland coast is confirmed

in the Treaty of 25 July 1850 in which Spain recognized the

independence of Nicaragua and her sovereignty over the “territories

70
See NM, Vol. I, pp. 26-27, para. 1.38.
71See NM, Vol. II, p. 25, Annex 6.
72See NM, Vol. I, pp. 43-45, paras. 1.80-1.83.

37 situated between the Atlantic Ocean and the Pacific, with its adjacent

islands…” 73.

1.44. Thus it is incontrovertible that all the islands off the Caribbean coast

of Nicaragua at independence appertai ned to this coast. If the Treaty

of 1928 had not divided between Nicaragua and Colombia title over
this territory (that is, attributed the coast to Nicaragua and certain

islands to Colombia) it would simply be a question of determining the

sovereign of the coast in order to determine the sovereign over the

whole territory including all the islands.

2. Colonial era

1.45. Colombia asserts that all the claimed maritime features “traditionally
have been considered as a unit” 74and that “since the time of the

Viceroyalty of Santa Fe (New Granada) … were considered as parts

of a whole, closely interrelated with the islands of San Andrés,
75
Providencia and Santa Catalina” . But, where is that tradition? What

documents support this tradition?

1.46. The Royal Order of 30 November 1803 on which Colombia based her
colonial titles ( uti possidetis iuris ) over the territories in dispute,

stipulated that the King had

“resolved that the Islands of San Andrés and
the part of the Mosquito Coast from the Cape

Gracias a Dios, included, towards the Chagres
River be segregated from the General
Captaincy of Guatemala (colonial predecessor
of Nicaragua and other Central American

States) and dependent upon the Viceroyalty of

73
NM, Vol. II, p. 43, Annex 13.
74CCM, Vol. I, pp. 38-39, para. 2.39.
75Ibid, p. 39, para. 2.40.

38 Santa Fe (colonial predecessor of Colombia
and other States)” .6

1.47. One preliminary observation is that the Royal Order does not mention

any other features that supposedly comprise the plural expression of

“islands” the Order uses when refe rring to San Andr és. It does not

mention the only other comparable islands in the area namely

Providencia or the Corn Islands.

1.48. Another observation would be that the Order does not refer to the

“San Andrés Archipelago” but only to the “Islands of San Andrés”.

This is the name used in all the colonial documents submitted by
77
Colombia .

1.49. A final conclusion that might be deduced from this Royal Order is that

all of the two territories which ar e being segregated are segregated

indivisibly, as a whole; that is, th e Mosquito Coast and the islands of

San Andrés are segregated, respec tively, as a unit with all their

respective appurtenances. In fact, th is is what was understood to be
the case by the Colombian Minist er Gual in the note quoted in

paragraph 1.32 above. Nothing more can be read from this Royal

Order or from any other colonial documents that would support any

conclusion to the effect that all the maritime features off the Mosquito

Coast were independent from this Coast and formed a separate “unit”

with the island of San Andrés. It would take an enormous leap of
faith to believe that the unmentione d minor cays were an accessory to

the small island of San Andrés instead of to the extensive Mosquito

Coast, or that the Mosquito Coast was only an accessory to the small

island of San Andrés.

76CCM, Vol. II-A, p.121, Annex 22.
77See Ibid, pp. 109-124, Annexes 19-23.

391.50. Juan de Solórzano y Pereira, ci ting ample authority, expressed a

common opinion, when referring to islands: “ dominium quidem

occupantibus quaeri, superioritatem vero et iurisdictionem huiusmodi

locorum ad eum pertiere, qui in illo mari imperium habet; mari autem
imperare videri qui in continente próxima imperat, ut argumento legis

Venditor (fundi) (…Digesto 1,1.5) aperte scribit Glossa (In VI

1.2.16)”- “The property is given to th e inhabitants, but the authority

and jurisdiction over those places belongs to whomever has the

dominion over the mainland, as is clearly written in the Glosa using
78
the Venditor Law argument” .

1.51. The idea that the sovereignty over the mainland attracts or allows a

presumption of sovereignty of the c ontinental sovereign over adjacent

islands is widely accepted, together with that of their contiguity or

greater proximity. It is a basic principle of logic that what is

accessory follows the principal.

1.52. When it came to identifying the ma ritime features that composed the
“San Andrés Archipelago”, the firs t governor of the Islands, Tomás

O’Neille, reported that the islands we re “five in number, to wit: San

Andrés, Providencia, Santa Catalina, San Luis of Mangle Grande, (or)

Alto or Corn Island, and Mangle Ch ico, surrounded by several islets
79
and cays of the same type” .

78“La propiedad se asigna a los ocupantes, pero la autoridad y la jurisdicción de
tales lugares pertenecen a aquél que tiene do minio en ese mar. Y tiene, al parecer,
dominio sobre el mar quien lo tiene sobre la tierra firme que está en sus
proximidades, como claramen te escribe la Glosa usando el argumento de la ley
Venditor” [J. de Solórzano Pereira,De Indiarum iure, Liber II: De adquisitione
Indiarum (Chaps. 1-15). Ed. And translation into Spanish by J.M. García Añoveros
et al., Madrid, 1999 (II.6, n. 19-22, pp. 186-188)].
79NM,Vol. I, pp. 125-126, para. 2.141.

401.53. Colombia presumes that O’Neille’s description according to which

these islands are “surrounded” by other features “cannot be taken

literally, as meaning immediate proximity, but as a reference to the
80
general area where all these features are located” .

1.54. The least one can say about the interpretation that Colombia makes of
O’Neille’s description is that it is extravagant enough. Looking at a

map of the area (Figure 1-1) and considering the distances between

the different maritime features and their exiguous dimensions, a

certain kind of fantasy is necessary in order to imagine that Roncador,

Serrana and, still more, Serranilla or Bajo Nuevo, “surround” the

islands aforementioned by O’Neille. They do only in the sense that

Haiti, Jamaica, Cuba and Grand Cayman can be said to “surround”
San Andrés.

1.55. For any objective observer, it is obvious that when O’Neille mentions

the “several islets and cays” surrounding San Andrés, Providencia,

Santa Catalina and the Co rn Islands, he is referring to those in their

close environment particularly since all of these islands have costal

reefs.

1.56. Colombia refers, without citing any source, to the exploration of Juan
(sic) Francisco de Fidalgo 81 who, at the beginning of the XIX century

executed the Crown order to survey “the cays and banks located

between Cartagena and Havana”. Co lombia states: “All the islands

and cays that were covered by the reconnaissance are part of the San
82
Andrés Archipelago” . How does Colombia draw that conclusion?

80
81CCM, Vol. I, p. 38, para. 2.37.
Nicaragua believes Colombia refers to Joaquín Francisco de Fidalgo. In the
Résumé Chronologique des Titres Territoriaux de la République de Colombie, Paris,
1899, p. 97, there is a mention of a report by this captain dated 20 February 1805.
82CCM, Vol. I, pp. 39-40, para. 2.41.

41 Fidalgo’s mission was to explore is lands and cays located “between

Cartagena and Havana”, not to identify the islands pertaining to the

“San Andrés Archipelago”.

1.57. Colombia then refers to the exploration of the Frigate Captain Manuel

del Castillo y Armenta 8. In the performance of his mission, Del

Castillo sighted Bajo Nuevo, which incidentally he describes as a

“shoal”, then located Serranilla, Serrana (after having looked for it for

four days due to, he says, its wr ongly described location), Roncador,
Santa Catalina and San Andrés. Colombia contends that “Del

Castillo’s reconnaissance was carried out over islands and cays that

are part of the San Andrés Archip elago. It did not cover any other

islands or cays in the vicinity, including the islets and cays close to the
84
Jamaican and Nicaraguan coasts” .

1.58. If we confine ourselves to the logic employed by Colombia, neither

Quitasueño (which, understandably, was not sighted by Del Castillo

because it is a submerged bank), nor Albuquerque, nor the cays of the

East-Southeast, nor the Corn Islands, would form part of the “San

Andrés Archipelago”, since Del Castillo does not mention them in the
report of his Caribbean tour. Provide ncia would not be part of the

Archipelago either.

1.59. But the real point is that Del Castil lo was just obeying the orders of

the Crown to locate and describe its insular possessions from its two

main stations in the Caribbean Sea: Havana and Cartagena. Neither
Del Castillo nor Fidalgo before him talked about or referred to any

Archipelago and much less to a “San Andrés Archipelago”.

83CCM, Vol. I, pp. 40-42, paras. 2.42-2.44 and Vol. II-A, pp.123-124, Annex 23.
84Ibid, p. 42, para. 2.44.

421.60. Colombia reproduces, finally , the Derrotero de las islas antillanas,

de las costas de tierra firme, y de las del seno mexicano, published by

the Hydrographic Office of the Spanish Navy in 1820, which,

naturally, includes all the maritime features we have been mentioning
86
(with the exception of Quitasueño ) and Serranilla and Bajo Nuevo

which are described as “shoals”. Since the document is a derrotero
(Sailing Directions) of the “islas antillanas” it is only natural that it

should refer to these features. What else could be expected? But at no

time does the derrotero describe these features as a group, or as part

of a single archipelago as Colombia claims.

1.61. What is interesting to note about the derrotero is its title which is not

translated in the text of the Colombian Counter-Memorial or in Annex
172 “Sailing Directions of the Antillean islands, of the mainland

coasts and of the Mexican coasts (concavity)”. The section of the

derrotero annexed by Colombia is the “Description of the Mainland”.

It is under this latter title in which the derrotero deals with the

features selected by Colombia and states: “we will now say something

about the islands and shoal bordering vis-à-vis that coast that are
87
beyond sounding depth.” Naturally, the coast that is being bordered

is the Mosquito Coast off which these features are located. Quite
naturally also, these features are de scribed in relation to the mainland

coast and not to any artificial and unknown archipelago of which,

according to Colombia’s claims, they would form a part.

85
86CCM, Vol. I, pp. 42-46, para. 2.45 and Vol. II-A, p. 615-617, Annex 172.
A Derrotero or sailing directions would have been careful to indicate the location
of the dangerous submerged bank of Quitasueño- the fact that it is not mentioned
only highlights that it was not visible and therefore not included.
87CCM, Vol. II-A, pp. 615-617, Annex 172.

431.62. The date of this Derrotero –1820– would be interesting for the
question of the uti possidetis if this were an issue before the Court.

This document implies that 10 years after the independence of

Colombia, from the Kingdom of Spai n –in spite of the supposedly all
powerful 1803 Royal Order– Spain still considered the Mosquito

Coast and adjacent maritime features as part of her domains, that is, as

part of a Nicaragua which had not yet gained independence in 1820.

1.63. In conclusion, during the colonial era the islands identified as forming

part of the “San Andrés Archipel ago” are the aforementioned five

identified by governor O’Neille. Th is does not support the assertions

of Colombia, but quite the opposite, it refutes them.

3. What was understood by the reference to the “islands of San

Andrés”?

1.64. In this section 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 proceeding that each had a

perfect title as from the 1928 Tr eaty. The question is what was

understood to comprise the territo ries over which sovereignty was
recognized by the Parties respectively in that treaty. Concretely, what

maritime features where underst ood to be appurtenant to the

Caribbean coast of Nicaragua and what features were understood to

comprise the “San Andrés Archipelago” at the time of independence
which is the moment of determination of title.

1.65. It has been demonstrated that dur ing the colonial period the islands

appertained to the sovereign of the coast. In the case of San Andrés
there is no question that the title claimed by Colombia over the islands

was based on and included the ti tle over the Mosquito Coast.

44 Nonetheless, this does not negate th e fact that if reference was made

to the “islands of San Andrés” th is reference had some specific

meaning that could identify these islands as a specific and distinct part

of the general territory even if not as a distinct legal or administrative

entity. Thus, the group of islands identified in the Royal Order of 1803

as the “islands of San Andrés” referred to a geographical entity with at
least an approximate limit in numb er and location. It is a legal and

historical absurdity to claim that this group of small islands with few

inhabitants could have been meant to identify all the maritime features

located between Cartagena in Colombia to Havana in Cuba, as the
88
Colombian Counter-Memorial attempts to portray. In this wishful

Colombian scenario the Mosquito Coast would be transformed simply
89
into a coast line with no off shore features. This result flies in the
face of common sense as well as colonial practice.

1.66. During the colonial period the refe rences to the gr oup of inhabited

islands identified as the “islands of San Andrés” encompass five

specific islands: San Andrés, Providencia, Santa Catalina, and Big and

Little Corn islands.

1.67. Thus, for example, the reconnaisance made of the coast and the
islands on 25 August 1773 by ship lieutenant of the Royal Navy José

del Río. In his letter to the Secret ary of War he states: “I have the

satisfaction to enclose the four ma ps of the islands of San Andrés,

Providencia, Santa Catalina, Mang les (the two Corn Islands) and

geographic chart of the Mosquito Co ast up to Trujillo, rectified of
90
many errors and views of th e highest interesting lands.” There is no

88
89See CCM, Vol. I, pp. 39-40, para. 2.41.
CCM also attempts to make the Nicaraguan mainland coast disappear and play no
role in the delimitation. See below Chap. VI.
90NM, Vol. II, p. 8. Annex 3.

45 suggestion of additional islands forming part of this group.

Futhermore, it is clear that these islands were surveyed as part of the
mainland coast.

1.68. At the beginning of the XIX centu ry, the Spanish governor of the

islands Tomas O’Neille, enumerated the islands under his
91
governorship in exactly the same way.

1.69. A glance at any map of the area (see Fi gure 1-1) will indicate that this

group, which –it should not be forgotten– includes the Corn Islands

which are under undisputed Nicaragua n sovereignty, is located more
or less in a compact area between latitudes 12º N and 13º 30′ N. There

was never any indication that it reached beyond this area. No

reference was ever made to any other islands and cays as being

considered part of this island group, as distinguished from being part

of the rest of the Mosquito Coast.

1.70. The suggestion might be made that no reference was made to these

other features because they were very small maritime features. But

this would completely ignore the geography of the area. The island
known as Cayo Miskito is located at approximately latitude 14º 20′ N.

It is a similar distance from San Andrés as are the cays of Serrana and

Roncador, and is certainly much cl oser to the shoa l of Quitasueño.

Furthermore, it is much closer than San Andrés to the distant cays of

Serranilla and Bajo Nuevo. In any case, it is by far the largest island
North of the 14º North parallel wh ere the cays of Serrana, Serranilla,

Bajo Nuevo and the submerged reef of Quitasueño are located.

1.71. And, Cayo Miskito is an island that is of similar size to San Andrés
itself, and it is surrounded by a very extensive chain of islands that

91
See above p. 40, para. 1.52.

46 dwarf any sporadic rocks surroun ding San Andrés. Why is it not
mentioned in any of the records as part of the “islands of San

Andrés”? The answer is evident: because the group of San Andrés had

a geographical circumscription th at did not extend beyond the other
four islands, located nearby, that we re repeatedly mentioned as being

part of this group.

1.72. Nicaragua in her Memorial has claimed sovereignty over the
following cays: the Cayos de Al buquerque; the Cayos del Este

Sudeste; the Cay of Roncador; North Cay, Southwest Cay and any

other cays on the bank of Serra na; East Cay, Beacon Cay and any

other cays on the bank of Serranilla; and Low Cay and any other cays
on the bank of Bajo Nuevo. The contention of Colombia is that all

these features are part of her “San Andrés Archipelago”. A look at this

claim (Figure 1-2) means that the Mosquito Coast of Nicaragua has

disappeared from the map. Accord ing to Colombia, the small and
insignificant island group of San Andrés has superseded the

sovereignty of this coast over the maritime features located off its

shores.

1.73. These cays are located in three sepa rate areas that are quite distant

from each other and do not form a uniform whole.

1.74. The first group is the only one with a certain proximity and possible
connection with the group of “isla nds of San Andrés”. This group is

comprised of Cayos de Albuquerque and Cayos del Este Sudeste. This

first group lies between 19 and 15 nautical miles from the island of
San Andrés.

1.75. This does not signify that these two cays are of necessity part of the

“islands of San Andrés” that now appertain to Colombia and are

47 referred to as the “San Andrés Archipelago”. The two islands of Big

and Little Corn were also a substantial part of this original island

group and there is equal reason to cons ider that these cays or any one

of them are part of the Corn Island group that appertains to Nicaragua.

For example, the cays of Albuquerque are also relatively near to the
92
Corn Islands.

1.76. The second group is Roncador and Serrana. These cays are completely

detached from the area and are located 110 and 130 nautical miles

respectively from San Andrés. This distance and their lack of any real

connection to the island group of San Andrés is the reason, for

example, why the United States was able to lay claim to them in the

XIX century, and it was only 20 years after they had been occupied
and the claim of sovereignty over them by the United States published

in a list by the Department of the Treasury on 12 October 1871 that

Colombia protested. It might be po inted out that Nicaragua for her

part filed no protest on these measures. The fact is that Nicaragua was

not in a capacity to take effective actions with relation to matters of

her Mosquito Coast since this area was still in dispute and de facto
93
controlled by Great Britain. In this regard, it is appropriate to point

to the delayed response to the o ccupation by the Colombian Chargé
d’Affaires in Washington. He addre ssed a letter to the Secretary of

State on 18 January 1893, stating that the Government of Colombia

was ignorant of the situation but that its silence “could in no case

prejudice its rights since prescr iption does not concede a title of

92
Another question is that according to the figures in thendCM the Cays of
Albuquerque are also located partially to the west of the 82 meridian. See for
example CCM, Vol. I, p. 345, fig. 8.1.
93NM, Vol. I, p. 49, para. 1.96.

48 dominion under international law and the acts or the rights of a nation
94
are exercisable at any time.”

1.77. The third group is that of Bajo Nuevo and Serranilla. These are

respectively 260 and 220 nautical m iles distant from San Andrés and

were not effectively claimed by Colombia before the XX century.

These two cays were also considered by Honduras to be part of her
territory since they were located in an area off what she claimed to be

her coast until the Judgment of 8 October 2007 decided this issue.

Before the Judgment of the Court, Colombia and Honduras had signed

a Treaty on 2 August 1986 whereby they divided between themselves
the Cay of Serranilla. It is important to note that the claim by

Honduras was also based on the fact that these cays were off what she

considered to be her coasts and us ed this title to negotiate the 1986

Treaty with Colombia.

1.78. In conclusion,

i. The only maritime features that could have any
historical and geographic connection with the island

group of San Andrés are the only relatively near cays
of Albuquerque and East Sout h East. The Corn Islands
were also part of this is land group of San Andrés and

have an equal right to claim sovereignty over these two
cays.

ii. The cays of Serrana and R oncador and the shoal of

Quitasueño have no geogr aphical or colonial
connection with the island group of San Andrés. They
were never effectively occupied by Colombia in the

XIX century precisely because of the distance and lack
of economic, social or po litical connection with the
islands of the group.

94
CCM, Vol. II-A, p. 147, Annex 27.

49 iii. A fortiori the even more distantly located cays of Bajo

Nuevo and Serranilla have no connection with San
Andrés.

C. THE SPECIAL Q UESTION OF R ONCADOR , ERRANA (AND

Q UITASUEÑO )

1. The second paragraph of Article I of the 1928 Treaty: the text

1.79. The second paragraph of Article I of the 1928 Treaty states that: “The

present Treaty does not apply to Roncador, Quitasueño and Serrana,

sovereignty over which is in dispute between Colombia and the
95
United States of America” .

1.80. The Court, in the Judgment of 13 December 2007 , after summing up

the conflicting positions of the Parties concerning the interpretation of
96
this provision , observed that it had jurisdiction over the question of

sovereignty of these maritime features, since the 1928 Treaty,

according to the clear meaning of th e second paragraph of Article I,
“does not apply” to them.

1.81. Colombia tries to obtain an advantage 98 in the wording of the original

Spanish text: “ No se consideran incluidos en este tratado… ”, which

according to Colombia is not adequa tely reflected in the translated

version used by the Cour t in its 2007 Judgment. The text used by the

Court is taken from the translation into English and French made by

the Secretariat of the League of Nations that renders the Spanish

95 Territorial and Maritime Dispute (Nicaragua v. Colombia ), Preliminary
Objections, Judgment of 13 December 2007 p. 11, para. 18.
96Ibid, pp. 31-32, paras. 99-103.
97Ibid, p. 32, para. 104.
98CCM, Vol. I, pp. 249-252, paras. 5.15-5.22.

50 phrase of the Treaty into English as “The present Treaty does not

apply…” and into French as “Le présent traité ne s’applique pas...”

1.82. In Colombia’s opinion, the right tr anslation should have been: “The

Roncador, Quitasueño and Serrana cay s are not considered to be
99
included…)” . According to Colombia this was the way it was

understood by her and the United Stat es, and the intention of these

words was:

“not that the Treaty did not apply – but that the
cays were not considered to be included in the

Treaty by reason of the dispute between the
two States [ i.e. Colombia and United States].
The phrase ‘are not considered to be’ is in
effect a deeming clause: its subject is the three
cays. It implies that, but for the dispute, the

three cays would have been considered as
included in the Treaty; in other words, that they
were included in the phrase ‘all the other
islands, islets and cays that form part of the
said Archipelago de San Andrés’” 10.

1.83. Nicaragua considers, in any case, that the conclusion drawn by

Colombia from the literal meaning of the second paragraph of Article

I of the 1928 Treaty is unwarranted, whether one stands by the

Spanish text, or adopts the English or French translations proposed by
Colombia. If Roncador, Quitasueño and Serrana “ no se consideran

incluidos” (“are not considered to be included”) in the Treaty it is

because they are excluded, they are ruled out, they are beyond its

limits or, as translated by the experts of the Secretariat of the League

of Nations, the Treaty “does not apply” to them.

99
100CM, Vol. I, p. 251, para. 5.20. Emphasis added.
Ibid, pp. 251-252, para. 5.21.

511.84. There is absolutely no way to infer from the text that, but for the

dispute referred to in the second pa ragraph of Article I, Roncador,

Quitasueño and Serrana would have b een considered as part of the
101
“San Andrés Archipelago”, as Colombia claims .

1.85. On the contrary, if any inference is to be drawn from the text it is to

point out that if the un derstanding had been that these features were

part of the “San Andrés Archipela go”, then the text of the Treaty

(following the preferred version of Colombia) would have said: “The

Roncador, Quitasueño and Serrana cay s are not considered to be

included…” in the San Andrés Archipelago and not as the Treaty
states, that they would not be considered to be included in the Treaty.

1.86. As explained in Nicaragua’s Memorial, the only reason for singling

out these three cays was because the United States was interested in

them. Colombia for her part had no special interest in them and even

proposed at one point in the negot iation of 1928 that the treaty should

specifically indicate that,

“Colombia acknowledges Nicaragua’s absolute
domain over the Mosquitia, the Mangles

Islands and the cays o102oncador, Quitasueño
and Serranilla (sic)” .

1.87. Therefore, the only correct conclusion is that if the United States had

not forced the inclusion 103of this provision, Roncador, Quitasueño

and Serrana would be in the same position as the other maritime

features which are not mentioned eo nomine, in respect to which the

question is whether they are covered by the reference of the first

101CCM, Vol. I, pp. 2.51-2.52 para. 5.21; p. 254, paras. 5.27-5.28.
102NM, Vol. I, p. 131, para. 2.155.
103See, generally, NM, Vol. I, Chap. II.

52 paragraph of Article I to the “San Andrés Archipelago” or they are

appurtenances of the Mosquito Coast.

1.88. Nicaragua contends that based on the text of the Treaty, the cays of
Roncador and Serrana (Quitasueño is a submerged bank) do not form

part of the San Andrés Archipelago 104.

2. The second paragraph of Article I of the Treaty: not an implicit

relinquishment by Nicaragua

1.89. Colombia claims that the wording of the second paragraph of Article I

of the 1928 Treaty implies that Nica ragua was recognizing that these
cays were not Nicaraguan but that they either appertained to Colombia

or the United States 105. This is not correct.

1.90. In the first place, paragraph 1 of Ar ticle I of the Treaty uses the very

clear wording “recognizes the full and entire sovereignty of” when the
intention is to recognize the sovereignty of the other party. There is no

such indication in paragraph 2 of any recognition of sovereignty over

these cays by Nicaragua either on behalf of Colombia or of the United

States.

1.91. In the second place, the text doe s not state that Nicaragua is
renouncing her claims to title over these three features. Any

relinquishment of title would have to be explicit, as explicitly worded

as the recognition accorded to the othe r Party in the first paragraph of

Article I.

104Colombia herself is ambiguous on this question and has even referred to them as
being part of the Archipelago of Providencia. See CCM, Vol. I, pp. 49-50, para.
2.55.
105CCM, Vol. I, pp. 420-421, para.10.7.

531.92. Therefore, the 1928 Treaty provide s no basis for sustaining that

Nicaragua relinquished her clai ms to Roncador, Serrana and
Quitasueño.

3. The second paragraph of Article I of the 1928 Treaty: basis of title

to the three features

1.93. As indicated above, the wording of the 1928 Treaty does not imply

any relinquishment of Nicaragua’s claim of sovereignty, or any
recognition of sovereignty of the Un ited States or of Colombia, over

those features.

1.94. Further, the words cannot be read to mean that the explicit recognition

by Colombia of “the full and entire sovereignty of the Republic of
Nicaragua over the Mosquito Coast” 106(including of necessity all

rights emanating from uti possidetis iuris ) excluded any rights to

claim these three features as part of that coast based on the uti

possidetis iuris at the time of independence or that, conversely, the

Treaty excluded the right of Colombia to claim these three features as
part of the “San Andrés Archipel ago” on the same basis. Neither

Nicaragua nor Colombia made any reservation to the recognition of
107
the “full and entire sovereignty” of the other Party. The fact that the

three features were not considered to be included in the Treaty or that

it does not apply to th em, does not mean that either the Mosquito
Coast or the “San Andrés Archipelago” was being in any way reduced

in size or diminished in appurtenances.

1.95. In other words, the effect of the treaty was not to convert these three

cays into terra nullius where the sovereignt y would be open to
question by other means different from that of the original title based

106
107NM, Vol. II, p. 56, Annex 19.
Ibid.

54 on the uti possidetis iuris at the time of independence. In fact,

Colombia’s claim vis-à-vis the Unit ed States was based precisely on
the uti possidetis iuris of the “San Andrés Archipelago”. Likewise,

Nicaragua’s claim is based on the uti possidetis iuris of the Mosquito

Coast, and the fact that the three features do not constitute part of the
108
San Andrés Archipelago legally, historically or geographically .

1.96. Thus, the question is reduced to whether Colombia can prove that

these cays were part of the “San A ndrés Archipelago” at the time of

Independence. If this is not suffici ently proven, then the only logical

conclusion is that these cays –like a ny other maritime features off the
Mosquito Coast– appertained to that coast, and belonged to the State

with sovereignty over that coast.

IV. Conclusions

1.97. In the 1928 Treaty, Colombia recognized the sovereignty of Nicaragua
over her Caribbean Coast (Mosquito Coast) with all appurtenant rights

over the maritime features located off this Coast with the exception of

those features that can be establishe d to have been considered part of

the “San Andrés Archipelago”. In accordance with the evidence, the

archipelago consisted of the island s of San Andrés, Providencia (and
Santa Catalina) and the smaller ma ritime features in their immediate

vicinity. The archipel ago does not include: Cayos de Albuquerque,

Cayos del Este Sudeste, the Cay of Roncador, North Cay, Southwest

Cay and any other cays on the bank of Serrana, East Cay, Beacon Cay
and any other cays on the bank of Serranilla, and Low Cay and any

other cays on the Bank of Bajo Nuevo.

108
See above pp. 32-49, paras. 1.29-1.77.

55 PART II

MARITIME DELIMITATION MARITIME DELIMITATION

General Introduction

1. The second part of the case involves the maritime delimitation

between Nicaragua and Colombia. As will be explained in Chapter III
below, the only delimitation that is necessitated by the geographic

circumstances attendant to this case is a delimitation of the

overlapping continental shelves of the two States. There is no need for

a delimitation of exclusive economi c 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.

2. It is Nicaragua’s position that the three islands identified in the 1928
Treaty as part of the “Archipelago of San Andrés”, that is, San

Andrés, Santa Catalina and Providencia, should each be enclaved,

within a 12-nautical-mile radius, and any other minor feature proven
by Colombia to be part of this Archipelago should, in accordance with

its physical characteristics and lo cation, be enclaved within a 3-

nautical-mile radius.

3. The jurisprudence of the Court and arbitral tribunals, reviewed in

Chapters V and VI, unequivocally shows that geographical features of

this nature (even if they are not ro cks but real islands as San Andrés)
are enclaved and do not generate rights to an exclusive economic zone

or a continental shelf, especially when they are located on the opposite

party’s side of the delimitation line . As will be shown in Chapter IV,

the “San Andrés Archipelago” lies squarely on the physical and legal
continental shelf of Nicaragua, and t hus falls on Nicaragua’s side of

59 the delimitation line separating Nicaragua’s and Colombia’s
continental shelves.

4. Enclaving the three islands identifi ed as comprising the “San Andrés
Archipelago”, and any minor features that the Court might determine

to be under Colombian sovereignty, would not affect the delimitation

of the continental shelf. The result is the same if any of the disputed

geographic features are found, by th e Court, to be Nicaraguan. The
only difference is that features found to be Nicaraguan would not need

to be enclaved, since they are already situated on Nicaragua’s

continental shelf and within Nicaragua’s 200-nautical-mile exclusive

economic zone.

5. In Chapter VI, Nicaragua shows that there is no merit to the claims of

Colombia to a delimitation –incl uding a 200-nautical-mile exclusive
economic zone and a continental shelf– giving full and unprecedented

effect to the three islands that the 1928 Treaty accorded her by name

as comprising the “San Andrés Archipelago”, or any effect to the

other minor features she claims are under her sovereignty.

60 CHAPTER II

LEGAL AND GEOGRAPHICAL FRAMEWORK

I. Legal Framework

A. N ICARAGUA ’SC LAIMS TO THE RESOURCES OF THE C ONTINENTAL

SHELF,A N ATIONAL F ISHINGZ ONE,AND AN EXCLUSIVE ECONOMIC

ZONE

2.1. Nicaragua ratified the 1982 Law of the Sea Convention on 3 May

2000. However, the consequences of this ratification involved the

consolidation of long-standing clai ms to the natural resources of

adjacent maritime areas. The relevant legislation prior to ratification

of the Convention is as follows:

• General Law on the Exploitatio n of Natural Resources, 12
109
March 1958 .
• Limits Established for National Fishing Zone, 8 April 1965.

• Law on the Continental Shelf a nd Adjacent Sea, 20 November
1979 11.

2.2. The position of Nicaragua was confirmed by the Law on Maritime

Areas adopted on 22 March 2002. This is the current legislation, and

the text is as follows (in material part):

10NM, Vol. II, pp. 191-193, Annex 63.
11Ibid, pp. 201-202, Annex 65.
111
Ibid, pp. 203-205, Annex 66.

61 ‘LAW ON MARITIME AREAS OF
NICARAGUA

“Art. 1. – The maritime areas of Nicaragua include
all the zones currently allowed by International
Law.

Art. 2 – The maritime areas of Nicaragua
correspond to those referre d to in International
Law as:
1. The Territorial Sea;

2. The Interior Waters;

3. The Contiguous Zone;

4. The Exclusive Economic Zone;

5. The Continental Shelf.

Art.3 – The breadth of the Territorial Sea is 12
marine miles, measured from the straight base line

or low tide establishe d along the length of the
coasts.
……………

Art.7. – The Exclusive Economic Zone of the
Republic of Nicaragua extends 200 marine miles
from the base line from wh ich the territorial sea is

measured.
Art. 8. – The Continental Shelf of Nicaragua
covers the bed and subso il of the submarine areas
that extend beyond its territorial sea as an

extension and natural proj ection of its territory
under the sea to the mi nimum distance of 200
marine miles and a maximum of 350 marine miles,

as recognised by International Law.
Art.9. – In processes of maritime delimitation, the
interests of the Natio n shall be upheld, in

62 agreement with the provisions of International
112
Law.”

B.C OLOMBIA ’SC LAIMS R EPRESENTED IN LEGISLATION

2.3. The relevant legislation of Colombia takes the form of the Law No. 10

adopted in 1978 11. This provides for an exclusive economic zone to

an outer limit of 200 nautical miles, together with a provision on the

shelf as follows:

“Article 10. The sovereignt y of the Nation extends to
its continental shelf for th e purpose of exploring and
exploiting the natural resources.”4

C.T HE A PPLICABLE L AW

2.4. For Nicaragua, the applicable law is determined by her ratification of

the 1982 Law of the Sea Convention on 3 May 2000. The position of

Colombia is expressed in the Counter-Memorial as follows:

“3. As a preliminary matter, it is appropriate to
address briefly the ques tion of the applicable
law. Nicaragua is a party to the 1982
Convention which it ra tified on 3 May 2000.

Colombia signed the Convention in 1982, but
has not ratified it and is therefore not a party to
it. On the other hand, Colombia is a party to
the 1958 Geneva Continental Shelf Convention

and Nicaragua is not. Moreover, in 1978
Colombia established a twelve-mile territorial
sea, a two-hundred mile exclusive economic

zone and sovereign rights over its continental
shelf measured from its baselines.

112
113M, Vol. II, pp. 207-209, Annex 67.
114CM, Vol. II-A, pp. 495-497, Annex 142.
Ibid, p. 496, Annex 142.

63 4.In these circumstances, the applicable law in
the present case with respect to maritime
delimitation is customary international law as
mainly developed by the jurisprudence of the

Court and by internationa l arbitral tribunals.
While the provisions of the 1982 Convention
are not applicable as a source of conventional
law per se, the relevant provisions of the
Convention dealing with a coastal State’s
baselines and its entitlement to maritime areas,

as well as the provisions of Articles 74 and 83
dealing with the delimitation of the exclusive
economic zone and continental shelf
respectively, reflect well-established principles
of customary international law. ” 115(Emphasis
added)

2.5. These passages are of obvious le gal significance and show that

Colombia accepts that the ‘relev ant provisions of the Convention’

reflect ‘well-established principles of customary international law’.

The terms of paragraph 4 quoted above clearly encompass the

provisions of Article 76 when refe rence is made to the ‘relevant
provisions of the Convention dealing with a coastal State’s baselines

and its entitlement to maritime areas ...’ It is obvious that Article 76

reflects ‘well-established principles of customary international law’.

2.6. In any case, the Colombian pleading refers explicitly to Article 83

concerning delimitation of the continental shelf between States with

opposite or adjacent coasts, and this reference must assume the

relevance of the definition of the continental shelf in Article 76, not
least because entitlement is logically anterior to delimitation.

115
CCM, Vol. I, pp. 305-306, paras. 3-4.

64 II. The General Geographical Framework and the Delimitation

Area

A. THE R ELEVANT C OASTS OF NICARAGUA AND COLOMBIA

2.7. In the Memorial, Nicaragua defined the re levant coasts for the

delimitation as:

(a) The mainland coast of Nicaragua from the terminus of the

land boundary with Honduras (in th e north) to the terminus of

the land boundary with Costa Rica (in the south).

(b) The mainland coast of Co lombia opposite the coast of

116
Nicaragua, and fronting on the same maritime areas .

2.8. Colombia in the Counter-Memorial rejects that the mainland coasts of

Nicaragua and Colombia are the relevant coasts for the maritime

delimitation between Nicaragua and Co lombia. In the first place, the

Counter-Memorial submits that:

“the geographic situation does not give rise on
the legal plane to an issue of delimitation as
between the mainland coasts of the Parties.”17

2.9. To reach this conclusion the Counter-Memorial first of all observes
118
that the mainland coasts are more than 400 nautical miles apart.

According to Colombia, this implies that:

116
117NM, Vol. I, p. 191, para. 3.15.
118CCM, Vol. I, p. 314, para. 7.12.
Ibid, p. 313, para. 7.12.

65 “because of the distances involved, neither
mainland coast generates maritime rights to an
exclusive economic zone or continental shelf
which meet or overlap with the entitlements

generated by the other mainland coast,
whether under the 1982 Law of the Sea
Convention to which Nica ragua is a party, or
under the 1958 Geneva Continental Shelf
Convention to which Colombia is a party, or

under customary international law, or indeed
under the domestic legislation of the
Parties” 11.

2.10. Colombia is correct in observing that the mainland coasts of

Nicaragua and Colombia are more than 400 nautical miles apart. At

the same time, Colombia ignores that the continental shelf of

Nicaragua extends beyond 200 nautical miles. This results in an

overlap of the continental shelves of the mainland coasts of Nicaragua
and Colombia. The Counter-Memorial confirms that Colombia is well

aware of the implications of th ese overlapping continental shelf

entitlements. How else to explain the argument in the Counter-

Memorial that the Court should not c onsider the delimitation of the
120
continental shelf beyond 200 nautical miles? If there is no
entitlement beyond 200 nautical miles to start with, as the Counter-

Memorial suggests in paragraph 7.12, which is quoted above, why

bother arguing that the Court should not consider its delimitation? As

a matter of fact, and as demonstrated below in Chapter III, there exists

a continental shelf entitlemen t of Nicaragua extending beyond 200
nautical miles from her mainland coast and the argument of Colombia

that it cannot be delimited is not sustainable.

119
120CCM, Vol. I, pp. 313-314, para. 7.12 (footnote omitted).
Ibid, pp. 312-321, paras. 7.8-7.20.

66 B.I SLANDS

2.11. There are a number of islands and cays located off the mainland coast

of Nicaragua. Many of these islands and cays are fringing to the coast

in the sense that they are within th e range of the territorial sea claims

of Nicaragua such as the extensive chain of cays to the north called

Cayos Miskitos which centers arou nd the main island of the group,
Miskito Cay, which has an area of some 21 square kilometers. Further

to the south is the island group of which the most significant are the

two Corn Islands (Islas del Maiz) which are located 26 nautical miles

from the mainland coast and have an area, respectively, of 9.6 square

kilometers and 3 square kilometers.

2.12. Further off are located the islands of San Andrés and Providencia (and
121
its appendix Santa Catalina ) at a distance from the mainland coast
of Nicaragua of about 105 and 125 nautical miles and an area of some

25 square kilometers and some 17 square kilometers , respectively.

These islands are located at a distance of approximately 380 nautical

miles from the mainland of Colombia. As explained above 122, 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; that is, for the purposes of this

case these islands will be considered under the sovereignty of

Colombia.

121
Santa Catalina is separated fr2m Providencia by a narrow channel of 140 metres.
It has an area of slightly over 1 km , as indicated in the Intro. to this Reply. When
reference is made in the text to Providencia, it will usually be understood to be also
a reference to Santa Catalina.
122See above pp. 2-3, para. 7.

672.13. Apart from the islands mentioned above, the continental shelf of
Nicaragua is relatively shallow an d is strewn with numerous banks.

As described in the Nicaraguan Memorial in paragraphs 3.115 to

3.126, some of these features are clos e to the surface and in some of

them a small cay protrudes above the waters. A description of the
banks where cays have emerged is found in the passages of the

Memorial just mentioned, and is furt her elaborated in Chapter IV of

this Reply.

2.14. In Colombia’s view, all banks and cays located east of the 82 nd

meridian of longitude west are pa rt of an immense “San Andrés

Archipelago” that would block most of the maritime areas generated

by the mainland of Nicaragua.

2.15. In view of the importance the Counter-Memorial attaches to this

artificially magnified “San Andrés Archipelago”, in its blown up

incarnation, it is necessary to address this matter in some detail in the
Reply. Chapter IV looks at the geography of the islands and the cays

and Chapters V and VI at the consequences which flow from it for the

delimitation of maritime zones between Nicaragua and Colombia. The

main findings of that exercise can be summarized as follows. There is
no single archipelago that encompa sses all the disputed islands and

cays. In particular, the following i ndividual features are not part of

the “Archipelago of San Andrés”: Cayos de Albuquerque, Cayos del

Este Sudeste, the Cay of Ronca dor, North Cay, Southwest Cay and
any other cays on the bank of Serrana , East Cay, Beacon Cay and any

other cays on the bank of Serranill a, and Low Cay and any other cays

on the Bank of Bajo Nuevo .Each of these features has to be

considered separately in the asse ssment of the maritime delimitation.

68 That assessment indicates that all of these features lie in the middle of

Nicaragua’s continental shelf and exclusive economic zone, and that
they are minute in comparison to the mainland coasts. One of the

features concerned, Quitasueño, is permanently submerged and has to

be disregarded completely in the delimitation since it is simply part of

Nicaragua’s continental shelf. The other features, due to their size and

other characteristics, are rocks in the sense of Article 121(3) of the
1982 Law of the Sea Convention.

C. M ARITIME D ELIMITATION

2.16. In the Counter-Memorial, Colombia not only takes issue with

Nicaragua’s approach to maritime delimitation in light of the relevant

geographical framework, but also s eeks to completely refashion the

relevant coastal geography. In that regard, the following aspects can
be noted.

2.17. First, in the Counter-Memorial the Colombian mainland coast has

gone missing. As Nicaragua submitted in the Memorial, the coast of
Colombia facing the delimitation area is located between the point at

which Colombia’s land boundary with Panama reaches the Caribbean

Sea and the northern extremity of the Peninsula of Guajira. 123 This

relevant mainland coast of Colombia measures around 740 kilometers.

The present case in all likelihood is the first instance of a Party which
not only seeks to shorten its relevant coast, but to ignore it completely.

123
NM, Vol. I, after p. 278, Figure I.

692.18. Colombia submits that her “San Andrés Archipelago” constitutes the

only relevant coast for the purposes of maritime delimitation with
Nicaragua 12.

2.19. Second, Colombia also ignores Nica ragua’s mainland coast, which is

by far the dominant geographical f eature of the Western Caribbean
that is the focus of this proceedi ng. Instead of juxtaposing the two

mainland coasts, which she chooses to ignore altogether, she sets up

an artificial comparison between islands and insignificant cays and
nd
rocks situated on either side of the 82 meridian. Colombia
myopically focuses her approach to the delimitation on the islands,

cays and rocks lying to the east of that meridian –all of which she

claims as part of an inflated “S an Andrés Archipelago”– and those

lying to the west of the meridian nearer to and accepted by Colombia

as appurtenant to Nicaragua’s coast. The only two Colombian features
in this “archipelago” of some si gnificance are the islands of San

Andrés and Providencia, which ha ve a combined coast facing the

Nicaraguan mainland coast of approximately 21 kilometers. In other

words, their combined coastal length is less than 1/20 of Nicaragua’s
450 kilometers coastline. It is no wonder that Colombia chooses to

ignore the latter.

2.20. Third, Colombia refuses to face the simple truth that the continental

shelf of Nicaragua extends beyond 200 nautical miles. On the one

hand, Colombia ignores the readily available facts which demonstrate

beyond doubt that the outer edge of the continental margin of
Nicaragua extends beyond 200 nautical miles, and that Nicaragua as a

124
CCM, Vol. I, pp. 341-343, paras. 8.6-8.9.

70 consequence is entitled to this extended continental shelf. That this

oversight is quite deliberate is evidenced by Colombia’s attempt to
deny that the entitlement to the co ntinental shelf beyond 200 nautical

miles is inherent in its being a natural prolongation of the land

territory of the coastal State 125, in contradiction of Article 76 of the

1982 Law of the Sea Convention. These matters are further discussed

in Chapter III below.

2.21. The principal conclusion from th e coastal geography is that the

maritime delimitation between Nicaragua and Colombia requires the
delimitation of their overlapping continental shelves lying between

their opposite mainland coasts. The islands of Colombia’s

“archipelago” do not constitute the opposite coast facing Nicaragua’s

mainland coast, but are located on Nicaragua’s side of the line

separating the two Parties’ cont inental shelves, and should be
enclaved in order to obtain an equitable delimitation. This is

consistent with the jurisprudence of the Court and various

distinguished arbitral tribunals.

125
CCM, Vol. I, p. 402, paras. 9.57-9.58.

71 CHAPTER III

THE DELIMITATION OF THE CONTINENTAL SHELF
AREA

I. Introduction

3.1. The Nicaraguan position on the delimitation area is shown in Figure

3-1. The geographical framework of the continental shelf area
consists of coasts which are clearly opposite rather than adjacent. The

predominant relationship is one of oppositeness. Thus, in accordance

with the principles of customary or general international law, the

delimitation area consists of the area between the mainland coasts of

Nicaragua and Colombia. The delimitation area stretches in the north
from Cape Gracias a Dios on the Nicaraguan coast, through the cays

of Serranilla and Bajo Nuevo to Punta Gallinas on the Colombian

coast, and in the south from Punta Ca stilla at the southern end of the

Nicaraguan coast to the western edge of the Colombian coast in the
Golfo de Uraba.

3.2. The position of Nicaragua is that the natural prolongation of the

mainland territory of both Parties meets and overlaps and hence that
there is a need for a delimitation of these maritime areas as will be

explained below.

3.3. In the view of Nicaragua, this assessment is unaffected by the

presence of various small islands positioned in the western sector of
126
the delimitation area . Nor is the assessment affected by the

126
See below Chaps. V and VI.

73presence of claims by third States: see Nicaraguan Memorial, Volume
I, Figure II. For present purposes the coastal relationship of the

Parties must be assessed independently of third state claims. It is to be

recalled that the incidence, to the south of Malta, of claims by Italy, in
the Libya/Malta case, did not inhibit the Court from determining

which of the coasts of Libya were opposite Malta and therefore

constituted relevant coasts for th e purposes of delimitation: see the

Judgment in the Libya/Malta case:

“Within the bounds set by the Court having

regard to the existence of claims of third
States, explained above, no question arises of
any limit, set by those cl aims, to the relevant
coasts of Malta to be taken into consideration .
On the Libyan side, Ras Ajdir, the terminus of
the frontier with Tunisia, must clearly be the
starting point; the meridian 15º 10′ E which has

been found by the Court to define the limits of
the area in which the Judgment can operate
crosses the coast of Libya not far from Ras
Zarruq, which is regarded by Libya as the limit
of the extent of its releva nt coast. If the coasts
of Malta and the coast of Libya from Ras Ajdir
to Ras Zarruq are compared, it is evident that

there is a considerable disparity between the
lengths, to a degree which, in the view of the
Court, constitutes a relevant circumstance
which should be reflected in the drawing of the
delimitation line. The coast of Libya from Ras
Ajdir to Ras Zarruq, measured following its
general direction, is 19 2 miles long, and the

coast of Malta from Ras il-Wardija to Delimara
Point, following straight baselines but
excluding the islet of Fi lfla, is 24 miles long.
In the view of the Court, this difference is so
great as to justify the adjustment of the median
line so as to attribute a larger shelf area to
Libya: the degree of such adjustment does not

74 depend upon a mathematical 127ration and
remains to be examined.” (emphasis added).

3.4. The coasts of Nicaragua and Colombia are essentially opposite: see

Nicaraguan Memorial, Volume I, Figure I and Reply, Volume II,

Figure 3-1. However, it is not n ecessary, for legal purposes, that

coasts should be precisely parallel or ‘directly’ opposite. The position
was explained by the Chamber in the Gulf of Maine case in terms of a

relationship of ‘frontal opposition’. In the words of the Chamber:

“But in putting forward its proposals for the
delimitation, Canada has failed to take account
of the fact that, as one moves away from the

international boundary terminus, and
approaches the outer openings of the Gulf, the
geographical situation changes radically from
that described in the previous paragraph. The
quasi-right-angle lateral adjacency relationship
between part of the Nova Scotia coasts, and

especially between their extension across the
opening of the Bay of Fundy and Grand Manan
Island, and the Maine coasts, gives way to a
frontal opposition relationship between the
remaining coasts of Nova Scotia and those of

Massachusetts which now face them. Itisthis
new relationship that is the most characteristic
feature of the objective s ituation in the context
of which the delimitation is being effected.
Moreover, when the geographical
characteristics of the delimitation area were

described it was shown that the relationship
between the lines that can be drawn, between
the elbow of Cape Cod and Cape Ann (on the
United States side), and between Cape Sable
and Brier Island (on the Canadian side), is one
of marked quasi-parallelism. In this situation,

127
Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.Reports
1985, pp. 49-50, para. 68.

75 even a delimitation line on the basis of the
equidistance method woul d have to be drawn
taking into account the change in the
geographical situation, which Canada did not

do when it was necessary. In any event what
had to be avoided was to draw, the whole way
to the opening of the Gulf, a diagonal line
dominated solely by the relationship between
Maine and Nova Scotia, even where the

relationship between Massachusetts and Nova 128
Scotia should have predominated” .
(emphasis added)

3.5. Both in the passage quoted and in later passages the Chamber used the

description of the ‘quasi-parallelism’ of the two coasts 129.

3.6. The relationship of the coasts of the Parties is of particular

significance, as the Chamber explained in the Gulf of Maine case:

“The Chamber has already considered this
aspect in Section VI, paragraphs 188-189, in
commenting on the delimitation line proposed
by Canada. It then expressed its disagreement

precisely in relation to the fact that the Party in
question had proposed a delimitation that failed
to take account of the fact that a change in the
geographical perspective of the Gulf is to be
noted at a certain point . Given the importance

of this aspect, the Cham ber considers that it
will here be apposite, by way of reminder, to
repeat its observation that it is only in the
northeastern sector of the Gulf that the
prevailing relationship of the coasts of the

United States and Canada is part of lateral
adjacency as between part of the coast of
Maine and part of the Nova Scotian coast. In
the sector closest to the closing line, the

128
Delimitation of the Boundary in the Gulf of Maine Area, Judgment, I.C.J. Reports
1294, p. 325, para. 189.
See ibid, pp. 333-334, para. 216; and p. 331, para. 206.

76 prevailing relationship is, on the contrary, one
of oppositeness as between the facing stretches
of the Nova Scotian and Massachusetts coasts.

Accordingly, in the first sector, geography
itself demands that, whatever the practical
method selected, the boundary should be a
lateral delimitation line. In the second, it is
once again geography which prescribes that

the delimitation line should rather be a median
line (whether strict or corrected remains to be
determined) for delimitation as between
opposite coasts, and it is moreover geography

yet again which requires that this line, given
the almost perfect parallelism of the two facing
coasts involved, should also follow a direction
practically parallel to theirs ” 13. (emphasis
added)

3.7. The delimitation area in the present case consists of the figure shown

in Figure 3-1. It can be seen that the frontal opposition between
Nicaragua and Colombia consists of coasts which are not parallel, but

which are nonetheless opposite rather than adjacent. In the

Tunisia/Libya case the Court, in relation to the second sector of the
131
boundary, emphasized the predominant relationship of the coasts .

In the present case the predominant relationship is one of

oppositeness.

II. Applicable Law

3.8. This subject has been examined a bove in Chapter II. For present

purposes it is assumed that the provisions of the 1982 Law of the Sea

130Delimitation of the Boundary in the Gulf of Maine Area, Judgment, I.C.J. Reports
1984, p. 331, para. 206.
131See Continental Shelf (Tunisia/Libyan Arab Jamahiriya), Judgment, I.C.J.
Reports 1982, p. 88, para. 126.

77 Convention constitute the best av ailable evidence of generally

accepted principles of customary international law.

III. The Claims to Continental Shelf Area

3.9. Nicaragua ratified the 1982 Law of the Sea Convention on 3 May

2000. The current legislation on the c ontinental shelf of Nicaragua is
as follows (Law N o 420 on Maritime Areas, 22 March 2002):

“Art.8. – The Continental Shelf of Nicaragua

covers the bed and subsoil of the submarine
areas that extend beyond its territorial sea as an
extension and natural proj ection of its territory
under the sea to the mi nimum distance of 200
marine miles and a maximum of 350 marine
132
miles, as recognised by International Law.”

3.10. Colombia has not ratified the 1982 Law of the Sea Convention. The

current legislation is Law N o 10 on Marine Spaces, 4 August 1978,

which provides in material part as follows:

“Article 10. The sovereignty of the Nation
extends to its continental shelf for the purpose
of exploring and exploiting the natural
133
resources.”

IV. The Criterion of the Natural Prolongation of the Land

Territory of the Coastal State to the Outer Edge of the

Continental Margin (Entitlement to Continental Shelf Areas)

3.11. The delimitation for present purposes is a line dividing the areas

where the coastal projections of Nicaragua and Colombia converge

132NM, Vol. II, pp. 207-209, Annex 67.
133CCM, Vol. II-A, pp. 495-497, Annex 142.

78 and overlap in order to achieve an equ itable result. The response of

Colombia is to assert that Nicara gua claims a boundary “where it has
134
no legal entitlement” . The basis for this assertion, which is that the
Nicaraguan claim line lies more th an 200 nautical miles from the

mainland coasts of the parties, has no legal foundation.

3.12. The achievement of an equitable solution is subordinate to the legal

basis of entitlement, which is the principle of entitlement of the

coastal state to the entire continental margin as defined in the
provisions of Article 76 of the 1982 Law of the Sea Convention.

3.13. These provisions are generally reco gnized as declaratory of general

international law. This would seem to be the position of Colombia as

elaborated in the Counter-Memorial:

“While the provisions of the 1982 Convention

are not applicable as a source of conventional
law per se, the relevant provisions of the
Convention dealing with a coastal State’s
baselines and its entitlement to maritime areas,

as well as the provisions of Articles 74 and 83
dealing with the delimitation of the exclusive
economic zone and continental shelf
respectively, reflect well-established principles
of customary international law.” 135

3.14. Article 76 of the Convention establishes the basis of entitlement to the

continental margin and entitlement is logically anterior to the process

of delimitation. It must follow that, when Colombia asserts that
Nicaragua has no entitlement beyond 200 nautical miles from the

134CCM, Vol. I, pp. 312-318, paras. 7.8-7.16.
135CCM, Vol. I, p. 306, para. 4.

79 mainland coasts, this assertion has no foundation in law in respect of
the continental margin.

3.15. This analysis will be developed on the basis of the evidence of the
location of the outer limit of the continental margin of Nicaragua. At

this stage it is necessary to point out that the pleading of Colombia has

no adequate appreciation either of the geomorphology of the seabed in

the delimitation area or of the law relating to entitlement to shelf
areas.

3.16. The legal anomalies in the Colombian Counter-Memorial appear both

in the text of the pleading and in the graphics provided. The flawed
approach to the applicable law is apparent in paragraph 7.12, which

reads as follows:

“The ‘geographical and legal framework
constituted by the mainland coasts of
Nicaragua and Colombia’, referred to in
Nicaragua’s Submissions, lends no support to
Nicaragua’s methodol ogy. Geographically,
this is because the two mainland coasts lie

more than 400 nautical miles apart in the area
covered by Nicaragua’s claim. Legally,
because of the distan ces involved, neither
mainland coast generates maritime rights to an
exclusive economic zone or continental shelf
which meet or overlap with the entitlements
generated by the other mainland coast,

whether under the 1982 Law of the Sea
Convention to which Nicaragua is a party, or
under the 1958 Geneva Continental Shelf
Convention to which Colombia is a party, or
under customary international law , or indeed
under the domestic legislation of the Parties.
Thus, the geographical s ituation does not give

rise on the legal plane to an issue of

80 delimitation as between the mainland coasts of
the Parties.”136(emphasis added)

3.17. The question of the applicable law has been examined in Chapter II

above. It was then indicated that in paragraphs 3 and 4 of the

Counter-Memorial Colombia accepts ‘the well-established principles

of customary international law.’ Moreover, in the context of these

principles Colombia also accepts ‘the relevant principles of the

Convention’ of 1982, including the provisions of Article 76.

3.18. Even if, for the sake of argument, the Colombian shelf claim is limited

to a zone of 200 nautical miles, this fact can have no limiting effect on

the application of the principles embodied in the 1982 Law of the Sea

Convention reflecting customary in ternational law to the natural
prolongation of the land territory of Nicaragua. The reasoning of the

Colombian pleading seeks to excise the continental margin from the

universe of maritime delimitation.

3.19. In addition, the graphics contained in the Colombian Counter-

Memorial confirm the policy of ignoring the entitlement of Nicaragua
to continental shelf areas in accordance with the 1982 Law of the Sea

Convention 137.

V. The Continental Shelf in the Western Caribbean: the

Geological and Geomorphological Evidence

3.20. The principles of maritime delimitation must operate within the

framework based upon geological and other evidence determining the
outer limit of the respective continental margins of Nicaragua and

136CCM, Vol. I, pp. 313-314 para. 7.12.
137See CCM, Vol. III Maps, pp. 81 and 83.

81 Colombia. The geomorphology of the western Caribbean is shown on

a bathymetric map in Figures 3-2 and 3-3. Shallow water areas are

shown in green, deeper water in blue, grading to abyssal depths in
purple.

A. N ICARAGUA S N ATURAL PROLONGATION

3.21. The dominant feature in the southwest Caribbean is the Nicaraguan

Rise. This is a large area of relatively shallow water stretching over

500 nautical miles from the Nicaraguan-Honduran landmass in the

southwest to Jamaica in the northeast. The Rise is separated from the
oceanic abyssal plain of the Colombian Basin to the south by a linear

feature: the Hess Escarpment. This Escarpment and hence the

southern limit of the Nicaraguan Rise is aligned approximately with

the southern border of Nicaragua with Costa Rica. The northern edge

of the Nicaraguan Rise is formed by the Cayman Trough, a deep

ocean trench lying to the north of Honduras, between Guatemala and
the north coast of Jamaica.

3.22. The Nicaraguan Rise is divided into two halves: to the north the

Nicaraguan Rise proper, and to the south, separated by the Pedro Bank
138
Fracture Zone – the Lower Nicaraguan Rise . The Nicaraguan Rise
proper is about 150 nautical miles wide and extends from Cabo

Gracias a Dios to Jamaica. Water depths are generally less than 1000

meters and large areas have water depths no more than 50 meters.

The Lower Nicaraguan Rise is abou t 120 nautical miles wide and has

water depths generally between 2000 and 2500 meters. Figure 3-4

13Sometimes also referred to as the No rthern Nicaraguan Rise and the Southern
Nicaraguan Rise.

82 shows a regional bathymetric profile from the Nicaraguan Rise to the

Colombian mainland.

3.23. The Hess Escarpment marks a sharp transition between the Lower

Nicaraguan Rise and the abyssal Colombian Plain. It is a 600 nautical

miles long underwater cliff corresp onding to a major geological fault
or fracture zone. In the southw est, an area of thickened crust

corresponding to the Mono Rise an d the Zipa Seamount provide an

extension of the Lower Nicaraguan Ri se across the line of the Hess

Escarpment into the abyssal plain to the south.

B.C OLOMBIA S N ATURAL PROLONGATION

3.24. The Colombian Basin lies between the Hess Escarpment and the

continental slope of Colombia and S outh America. It slopes gently

downwards to the north with a maxi mum depth in the north of about

4200 meters. The oceanic crust of the Colombian Basin is being
subducted beneath the South American Plate along the north coast of

Colombia forming a deep ocean trench. The normally sharp junction

between continental and oceanic crust is modified by the South

Caribbean Deformed Belt in the east and is overlain by the Magdalena
Fan in the west. This latter feature is a thick wedge of sediments

derived from the continent forming a deep-sea fan.

3.25. Any discussion of the geology of th e Nicaragua-Colombia part of the

southwest Caribbean requires an un derstanding of the disposition of
the tectonic plates of the area. The Caribbean Plate comprises

virtually all the Caribbean Sea. It is approximately rectangular in

shape and separates the North Ameri can Plate (including the Gulf of

Mexico) from the South American Plate (and smaller plates that form

83 northern Colombia and Panama). It is bounded on the west by the
deep ocean trench west of Central America, to the north by the

Cayman Trough running just north of Honduras through Jamaica,

Hispaniola and Puerto Rico, to the east by the Lesser Antilles arc, and
to the south by the Caribbean and Panama foldbelts (Figure 3-5).

3.26. The southern margin of the Caribbean Plate is formed by subduction

zones as it is overridden by the Sout h American Plate. The northern,
leading, edge of South America (the Colombian margin) has been

buckled into the South Caribbean Deformed Belt. Like all tectonic

plates, deformation within the plat e is relatively limited. Several

major strike-slip faults cross the plate, for example forming the Hess
Escarpment.

3.27. The Caribbean Plate is formed separa tely from its neighboring areas.
Its composition and internal stru cture are distinct from the

immediately adjacent area. Thus there is no geological continuity

between Colombia and the Caribbean Plate.

3.28. In summary:

a) For Nicaragua, there is clear topographical and
geological continuity betw een the Nicaraguan land

mass and the Nicaraguan Rise which is a shallow area

of continental crust ex tending from Nicaragua to

Jamaica. Its southern limit is sharply defined by the
Hess escarpment, separating the lower Nicaraguan Rise

from the deep Colombian Basin. This therefore

84 represents the natural pr olongation of the Nicaraguan

landmass.

b) For Colombia, there is a sharp geological discontinuity

between the Colombian landmass situated on the South

American Plate and the oceanic crust of the Caribbean
Plate. This continent-ocean boundary is overlain in

party by the thick sediments of the Magdalena Rise.

The natural prolongation of the Colombian landmass,

in contrast, is therefore limited to a narrow zone on the
southern margin of the Colombian Basin.

C. APPLICATION OF THE PRINCIPLES REFLECTED IN ARTICLE 76

3.29. Paragraphs 3.21 to 3.28 above have presented the geological evidence

for the natural prolongation of theland territories of Nicaragua and

Colombia. Once this natural prol ongation is proven, the appropriate
provisions of Article 76, in particular paragraphs 4 to 7, can be applied

to delineate the outer edge of the continental margins which comprise

the submerged prolongation of the land mass of the coastal State, and

consist of the seabed and subsoil of the shelf, the slope and the rise,
but not the deep ocean floor.

3.30. It is useful to set out the provisions of Article 76 of the 1982 Law of

the Sea Convention in full:

“Definition of the continental shelf

1. The continental shelf of a coastal State
comprises the sea-bed and subsoil of the
submarine areas that extend beyond its

85territorial sea th roughout the natural
prolongation of its land te rritory to the outer
edge of the continental margin, or to a distance
of 200 nautical miles from the baselines from
which the breadth of the territorial sea is
measured where the outer edge of the
continental margin does not extend up to that

distance.

2. The continental shelf of a coastal State shall
not extend beyond the limits provided for in
paragraphs 4 to 6.

3. The continental margin comprises the
submerged prolongation of the land mass of the
coastal State, and consists of the sea-bed and
subsoil of the shelf, the slope and the rise. It
does not include the deep ocean floor with its
oceanic ridges or the subsoil thereof.

(a.) For the purposes of this
Convention, the coastal State shall establish the
outer edge of the continental margin wherever
the margin extends beyond 200 nautical miles
from the baselines from which the breadth of
the territorial sea is measured, by either:

(i) a line delineated in accordance with
paragraph 7 by reference to the outermost fixed
points at each of which the thickness of
sedimentary rocks is at least 1 per cent of the
shortest distance from such point to the foot of
the continental slope; or

(ii) a line delineated in accordance with
paragraph 7 by reference to fixed points not
more than 60 nautical m iles from the foot of
the continental slope.

(b) In the absence of evidence to the
contrary, the foot of th e continental slope shall

be determined as the point of maximum change
in the gradient at its base.

86 5. The fixed points compri sing the line of the
outer limits of the continental shelf on the sea-
bed, drawn in accordance with paragraph
4(a)(i) and (ii), either shall not exceed 350
nautical miles from the baselines from which
the breadth of the territorial sea is measured or

shall not exceed 100 nautical miles from the
2,500 metre isobath, which is a line connecting
the depth of 2,500 metres.

6. Notwithstanding the provisions of paragraph
5, on submarine ridges, th e outer limit of the

continental shelf shall not exceed 350 nautical
miles from the baselines from which the
breadth of the territorial sea is measured. This
paragraph does not apply to submarine
elevations that are natu ral components of the
continental margin, such as its plateaux, rises,
caps, banks and spurs.

7. The coastal State shall delineate the outer
limits of its continental shelf, where that shelf
extends beyond 200 nautical miles from the
baselines from which the breadth of the
territorial sea is measured, by straight lines not
exceeding 60 nautical miles in length,

connecting fixed points, defined by co-
ordinates of latitude and longitude.”

3.31. These provisions define the principal features of the continental shelf

and in doing so employ the concept of the natural prolongation of the
land territory to include the continental margin. It thus becomes clear

that the legal concept of the continental shelf extends to the outer

limits of the continental margin, as defined in paragraphs 3 and 4.

3.32. The provisions of paragraph 3 give prominence to the distinction

between the continental margin and the deep ocean floor. It is

87 stipulated that the continental margin ‘does not include the ocean

floor.’

3.33. The provisions of paragraph 4 involv e criteria of a legal character in

order to ‘establish the outer edge of the continental margin’ for the

purposes of the Convention. The nature of this exercise is emphasised
by the language used in paragraphs 5 and 6. Paragraph 5 refers to ‘the

line of the outer limits of the contin ental shelf’ and paragraph 6 refers

‘the outer limit of the continental shelf’.

VI. The Entitlement to Continental Shelf and the Achievement of

a Delimitation in Accordance with Article 83 of the 1982 Law of
the Sea Convention

A.T HE APPLICATION O F THEPRINCIPLE OF EQUAL DIVISION

3.34. In accordance with the provisions of Article 76 of the 1982 Law of the

Sea Convention, Nicaragua has an en titlement extending to the outer
limits of the continental margin. In the case of an overlap with the

continental margin of Colombia, then the principle of equal division

of the areas of overlap should be the basis of the maritime

delimitation.

3.35. The delimitation for present purposes is a line dividing the areas

where the coastal projections of Nicaragua and Colombia converge

and overlap in order to achieve an equita ble result. In this context the

evidence of convergence and overlap determines the way in which the
principle of equal division of the areas of overlap becomes operative.

883.36. The principle of equal division must operate within the framework of

the geological and other evidence determining the outer limit of the
respective continental margins of Nicaragua and Colombia. This

evidence will now be presented.

B.T HEG EOLOGICAL E VIDENCE OF THEO UTER LIMITS OF THE

C ONTINENTAL SHELF A REAS ATTRIBUTABLE TO NICARAGUA

3.37. Public domain datasets have been used to define the edge of the

continental margin for both Nicaragua and Colombia. These data are
freely and widely available and provide an initial estimate of the outer

limits of the continental shelf. The software CARIS LOTS was used

for the detailed calculations. The principal datasets used were:

1) 2-Minute Gridded Global Re lief Data (ETOPO2v2) June,

2006 obtainable from the World Data Center for
Geophysics & Marine Geology, Boulder, Colorado,
(NGDC).

This has been used for the regional illustrative maps and

for bathymetric profiles where more detailed GEODAS
profiles (see 3 below) are not available.

2) Total Sediment Thickness of the World’s Oceans &
Marginal Seas also obtainable from NGDC

(http://www.ngdc.noaa.gov/mgg/sedthick/sedthic).html

This has been used for the sediment thickness calculations
off the Colombian margin.

3) Marine Geophysical Trackline Data (GEODAS database)
Also obtainable from NGDC
(http://www.ngdc.noaa.gov/mgg/geodas/tracklin).html

These detailed bathymetric profiles have been used as the

primary source of bathymetric data for foot-of-slope
calculations.

893.38. Preliminary information indicative of the outer limits of Nicaragua’s

continental shelf beyond 200 nautical miles from the baselines from

which the breadth of the territorial sea is measured, and a description
of the status of preparation and intended date of making a full

submission to the Commission on the Limits of the Continental Shelf

will be submitted to the United Nations Secretary General within the

next months. The technical information for this submission is annexed
to this Reply139.

3.39. For Nicaragua, the outer limit of the continental margin is defined by

the provisions of paragraph 4(a)ii of Article 76 which defines it as a
line not more than 60 nautical miles from the foot of the continental

slope. The foot of the contin ental slope runs along the Hess

Escarpment in the eastern section, and around the outer edge of the

Mono Rise farther west. Figure 3-6 shows the detail of one of the foot

of the slope picks. Further details are included in Annex 18.

3.40. The extent of the Nicaraguan contin ental shelf is marked by the blue

dashed line on Figure 3-7. The outer limit is based on a line measured

60 nautical miles from the foot of the slope. All points are either
within 100 nautical miles from the 2,500 meters isobath or 350

nautical miles from the territorial sea baseline and so satisfy the

constraints in paragraph 5 of Artic le 76. The coordinates for the outer

limit of the Nicaraguan continental shelf are contained in Annex 16.

139
See NR, Vol. II, Annex 18.

90 C.T HE C OLOMBIAN C ONTINENTAL SHELF

3.41. The analysis of the Colombian continental margin here has been done

in a similar way to that for Nicaragua using the easily available public

domain information, in particular the global bathymetry and sediment
140
thickness datasets compiled by the NGDC referenced above .

3.42. For Colombia both the provisions of paragraph 4 of Article 76 are

used, that is, the outer edge of the continental margin is either a line
where the thickness of sedimentary rocks is at least one per cent of the

distance from the foot of the slop e (Article 76.4a(i)) or a line 60

nautical miles from the foot of the continental slope (Article 76.4a(ii)).

3.43. The Colombian foot of the slope has been buried in this area by thick

sediments of the Magdalena Rise. As discussed in paragraphs 3.27 to

3.31 and illustrated in Figures 3-2, 3-3 and 3-4, the continent-ocean

boundary is formed by the subduc tion zone that runs along the

northern edge of the Caribbean Deformed Belt. As the zone where the

lower part of the slope merges into the top of the rise has been
obscured, the foot of slope along this margin has been picked along

the 1º gradient line that separate s the continental slope with typical

gradient line that separates the continental slope with typical gradients

of 1.5º, and the continental rise with gradients of 0.5º or less1Figure

3-8 provides a representative ex ample of the foot-of-slope and

sediment thickness calculations.

140
141ee above para. 3.37.
This follows the definition in the Manual on Technical Aspects of the United
Convention on the Law of the Sea published bythhe International Hydrographic
Bureau, IHO Special Publication 51, 4 Edition March 2006,
(http://www.iho.shom.fr/publicat/free/files/S-51_Ed4-EN.pdf)

913.44. The extent of the Colombian continental shelf is marked by the red

dashed line on Figure 3-9; this show s the outer limit measured either
60 nautical miles from the foot of the slope or using the 1% sediment

thickness criterion. All points are w ithin 350 nautical miles from the

baselines from which the breadth of the territorial sea is measured and
142
thus satisfy the constraints in Article 76.5. The coordinates for the

outer limit of the Colombian contin ental shelf are contained in Annex
17.

D. O VERLAPPING C ONTINENTAL M ARGINS

3.45. The outer limits for Nicaragua and Colombia are combined in Figure

3-10. Geologically and physically th ese margins are distinct, but the

provisions of Article 76 whereby the juridical outer limit is measured
60 nautical miles from the foot of slope or using the sediment

thickness criterion has as a result that these continental margins

overlap.

3.46. On this basis, and bearing in mind the requirement in Article 83 of the
Convention that the delimitation pro cess should ‘achieve an equitable

solution’, the appropriate method is as follows. The area of

delimitation is the area on Figure 3-10 described as the ‘area of

overlapping continental margins’. The continental margins are based

on geological and geomorphological factors where the two States’
territorial sea baselines are largel y irrelevant. Here a line of equal

division of the area of overlapping margins has been drawn that is

equidistant from the nearest poi nt on the respective continental

margins. This has resulted in a line that equitably divides the area of

142
Ibid.

92 overlapping margins (Figure 3-11). The coordinates for this line of
delimitation are as follows:

1. 13º 33′ 18″N3076º ′ 53″W
2. 13º 31′ 12″N 76º 33′ 47″W;

3. 13º 08′ 33″N 77º 00′ 33″W;

4. 12º 49′ 52″N 77º 13′ 14″W;

5. 12º 30′ 36″N 77º 19′ 49″W;
6. 12º 11′ 00″N 77º 25′ 14″W;

7. 11º 43′ 38″N 77º 30′ 33″W;

8. 11º 38′ 40″N 77º 32′ 19″W;

9. 11º 34′ 05″N 77º 35′ 55″W
(All coordinates are referred to WGS84).

VII. The Relation of the Nicaraguan Claim to the Areas of the

Continental Shelf and the Outer Limit of the Exclusive Economic
Zone of the Colombian Mainland

3.47. As the relevant graphic shows, both the continental margins fall

within the outer limit of Colombia’s exclusive economic zone. Thus,

not only the continental margin of Colombia but also her exclusive
economic zone overlaps with the c ontinental margin of Nicaragua,

such that the final section of the continental shelf of Nicaragua is

subjacent to the exclusive economic zone of Colombia. This no doubt
exceptional situation must now be brought into account. Colombia

has an entitlement based upon the principle of distance to an exclusive

economic zone of 200 nautical miles. Nicaragua has an entitlement to

the full extent of the continental margin. These areas of entitlement
intersect and there is no criterion which would indicate a legal

93 priority. It is for this reason that two distinct lines of delimitation are
appropriate.

3.48. At this stage it must be pointed out that there is no reason of law or
equity why Nicaragua should ren ounce her rights to the areas of

continental margin of her natural prolongation which are subjacent to

parts of the 200-nautical-mile exclusive economic zone proclaimed by

Colombia in 1978. Any unilateral concession of this type would lack
legal foundations.

3.49. A more legally cogent approach w ould involve the determination of a

single boundary line of equal divisi on within the areas of overlap of
the respective continental margins.

3.50. Such an approach would refl ect both the geological and
geomorphological architecture and the consequent legal entitlements.

By way of clarification it is necessary to emphasise that, if there were

no geological interaction or overlapp ing with the continental margin

of Nicaragua, then Colombia would have a claim to the margin of her
natural prolongation and then further to the limit of 200 nautical miles

from the baselines.

3.51. At this point it is necessary to reckon with the application of the

distance principle in the provisions of Article 76 of the Law of the Sea

Convention. Article 76, paragraph 1, provides:

“The continental shelf of a coastal State
comprises the sea-bed and subsoil of the
submarine areas that extend beyond its
territorial sea th roughout the natural

94 prolongation of its land te rritory to the outer
edge of the continental margin, or to a distance
of 200 nautical miles from the baselines from
which the breadth of the territorial sea is
measured where the outer edge of the
continental margin does not extend up to that
distance.”

3.52. The question then must be, does this legal extent of the continental
shelf appertaining to the Colomb ian coast exclude the claim of

Nicaragua to her continental margin falling within the distance of 200

nautical miles from the coast?

3.53. The possible responses must be reviewed. The first candidate

response might be that Article 76, paragraph 1, produces an outcome

based on the principle of distance. This entitlement would depend

upon the status of Colombia as a coastal State, and would create a
shelf which is not conditioned as to ext ent by the principle of natural

prolongation to the outer edge of the continental margin. In the result

the situation would remain one char acterized by the intersection of
areas of entitlement with distinct legal foundations.

3.54. The difficulty which then emerges is the determination of criteria

which would establish a legal priority. In this context, and this is the
second consideration, there is no a ssumption that the provisions of

Article 76 were intended to cover the type of situation presented to the

Court. No reference to this type of situation can be found in the
University of Virginia Commentary, Volume II, edited by Nandan and

Rosenne, pages 825 to 992. The literat ure in general is silent on the

problem.

953.55. And there are further considerations. There are no a priori reasons for
giving priority to claims based exclusively upon the distance principle.

The rationale of ‘the natural prolongation of [the] land territory’ of the

coastal State is not evidently less significant than the distance
principle. Moreover, the coastal state does not obtain rights over an

exclusive economic zone without a specific claim. These rights do not

exist by operation of law. In strong contrast the rights of the coastal

state over the continental shelf do not depend on occupation or any
express proclamation: 1982 Law of the Sea Convention, Article 77.

3.56. In conclusion Nicaragua submits th at the provisions of Article 76

should be applied but not on the basi s that Colombia is allowed to
override the entitlement of Nicaragua to her continental shelf by

reason of the ‘200-nautical-mile zone’ aspect of Article 76, paragraph

1. In other words, in the context of continental shelf claims,
Nicaragua and Colombia should both have the benefit of their natural

prolongations of their respective land territories. To allow Colombia

to rely on Article 76 for the purpose of curtailing the natural

prolongation of Nicaragua would be to rule out an equitable solution
of the kind envisaged in the provisions of Article 83.

VIII. The Relevance of Proportionality and the Delimitation of

Continental Shelf Areas

A. NTRODUCTION

3.57. The ‘Factor of Proportionality’ has been addressed in the Memorial,

pages 226 to 236, but only ‘on a preliminary basis’. There it is

emphasised that the principal feature of proportionality is that it

96 relates to space but not to location. In other words, proportionality as

such cannot produce a delimitation.

B.T HER ELEVANCE O FP ROPORTIONALITY TO THE D ELIMITATION OF
THE A REAS OFC ONTINENTAL S LOPE AND CONTINENTAL M ARGIN

3.58. The role of proportionality is not as a method of delimitation but a

fairly flexible vehicle for assisting in the task of ensuring that the

outcome of delimitation is the achievement of an equitable solution:

see Articles 74 and 83 of the 1982 Law of the Sea Convention. Its
primary role has been to placelimits upon the distorting effects of

geographical anomalies resulting from coastal configurations or the

presence of small islands.

3.59. There is no evidence, either in judici al practice or in the doctrine, that

the factor of proportionality can aff ect entitlement as such, and much

less entitlement based upon the concep ts of natural prolongation and

the continental margin.

3.60. In any event, proportionality is not a source of title to the continental

shelf. In this respect the following passages from the Award in the

Anglo-French Continental Shelf case are emphatic and helpful:

“101. In short, it is disproportion rather than
any general principle of proportionality which
is the relevant criterion or factor. The
equitable delimitation of the continental shelf

is not, as this Court has already emphasized in
paragraph 78, a question of apportioning –
sharing out– the contin ental shelf amongst the
States abutting upon it. Nor is it a question of
simply assigning to them areas of the shelf in

proportion to the length of their coastlines; for

97 to do this would be to substitute for the
delimitation of boundaries a distributive
apportionment of shares. Furthermore, the
fundamental principle that the continental shelf

appertains to a coasta l State as being the
natural prolongation of its territory places
definite limits on recourse to the factor of
proportionality. As was emphasised in the
North Sea Continental Shelf cases (I.C.J.
Reports 1969, paragraph 91), there can never

be a question of comp letely refashioning
nature, such as by render ing the situation of a
State with an extensive coastline similar to that
of a State with a restricted coastline; it is rather
a question of remedying the disproportionality
and inequitable effects produced by particular

geographical configurati ons or features in
situations where otherwise the appurtenance of
roughly comparable attri butions of continental
shelf to each State would be indicated by the
geographical facts. Proportionality, therefore

is to be used as a criterion or factor relevant in
evaluating the equities of certain geographical
situations, not as a general principle providing
an independent source of rights of continental
shelf.”143(emphasis added)

3.61. 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 defined in

Article 76 of the 1982 Law of the Sea Convention.

143
Case concerning the Delimitation of Continental Shelf between the United
Kingdom of Great Britain and Northern Ireland and the French Republic, Decision
of 20 June 1977, RIAA, Vol. XVIII, UN, p. 58, para. 101.

98 IX. The Entitlement to Continental Shelf and the Effect of Islands
in the Achievement of a Delimitation in Accordance with Article

83 of the 1982 Law of the Sea Convention

3.62. For present purposes, the focus is exclusively upon the particular
element constituted by the presence of small islands and cays in the

area of the delimitation of the continental shelf.

3.63. As shown in (Figures 1-2, 3-2 and 3-7) the various island features
form part of the natural prolongatio n of Nicaragua. Moreover, these

features are located on the main part of the continental platform, and

therefore precede the area of the continental slope. The framework of

the delimitation is thus the existence in principle of ‘overlapping’
shelf areas of Nicaragua, and the areas of shelf appurtenant to certain

islands, including San Andrés and Providencia.

3.64. As indicated in the Submissions appended to the Memorial, and also

in the conclusions of Chapter V and the Submissions of this Reply, the

equitable solution, in case of su ch a finding by the Court, can be

obtained by a process of enclaving (see Chapters 5 and 6 and Figures
5-1, 5-2, 6-9 and 6-10 below), which is simply a mode of drawing an

appropriate boundary.

X. Conclusions

3.65. The entitlements to continental shel f areas in accordance with Article

76 of the 1982 Law of the Sea Convention depend upon the geological
and geomorphological evidence. The principle of equal division must

operate within the framework based upon this evidence determining

99 the outer limit of the respective co ntinental margins of Nicaragua and
Colombia.

3.66. Geologically and physica lly these margins are distinct, but the
provisions of Article 76 whereby the juridical outer limit is measured

60 nautical miles from the foot of slope or using the sediment

thickness criterion has as a result that these continental shelves

overlap. On this basis, and bearing in mind the requirement in Article
83 of the 1982 Law of the Sea Convention that the delimitation

process should “achieve an equitable solution”, the appropriate

method is as follows: The area of delimitation in the eastern sector is

the area on the Figure 3-11 describe d as the “area of overlapping
continental margins”.

3.67. As the evidence shows, both continen tal margins fall within the outer
limit of the exclusive economic zone based upon Colombia’s

mainland coast. Nicaragua has an entitlement to the full extent of the

continental margin. These areas of entitlement intersect and there is

no criterion which would indicate a legal priority.

3.68. In this context the legally appropriate solution involves the

determination of a single boundary lin e of equal division within the
areas of overlap of the respective continental margins.

3.69. The coordinates for the line that equitably divides the area of

overlapping margins of delimitation are as follows:

10. 13º 33′ 18″N3076º ′ 53″W

11. 13º 31′ 12″N 76º 33′ 47″W;

10012. 13º 08′ 33″N 77º 00′ 33″W;
13. 12º 49′ 52″N 77º 13′ 14″W;

14. 12º 30′ 36″N 77º 19′ 49″W;

15. 12º 11′ 00″N 77º 25′ 14″W;
16. 11º 43′ 38″N 77º 30′ 33″W;

17. 11º 38′ 40″N 77º 32′ 19″W;

18. 11º 34′ 05″N 77º 35′ 55″W

(All coordinates are referred to WGS84).

101 CHAPTER IV

PHYSICAL AND LEGAL ASPECTS OF THE MARITIME
FEATURES LOCATED ON THE CONTINENTAL SHELF OF

NICARAGUA

I. Introduction

4.1. The position of Nicaragua is in principle that all maritime features
located off her mainland coast and on her continental shelf appertain

to Nicaragua. Since the Judgment of the Court of 13 December 2007

has determined that the 1928 Treaty recognized the sovereignty of

Colombia over San Andrés and Provi dencia (and its appendix, Santa

Catalina), the claims to sovereignty presently made in Reply are
limited to all the other features that are sited off the mainland coast of

Nicaragua.

4.2. The analysis of this chapter is not addressed to the question of
sovereignty but to the physical and legal aspects of these features in

order to better evaluate their possi ble relevance in th e delimitation of

the maritime areas that are dealt with in this Reply.

II. Maritime Features claimed by Colombia

A. COLOMBIA ’S ARCHIPELAGO ARGUMENT

4.3. The Counter-Memorial devotes an entire chapter (Chapter 2) of more

than 60 pages to a description of the “San Andrés Archipelago”.

Despite its length, Chapter 2 fails to answer the question why the fact

that in Colombia’s view there is one archipelago which forms “a
geographical and economic unit historically known as the San Andrés

103 144
Archipelago”, has any consequences for the maritime delimitation

between Nicaragua and Colombia.

4.4. In Chapter 8, Section B of the Counter-Memorial, dealing with the

relevant area within which the maritime delimitation between

Nicaragua and Colombia is to be carried out, Colombia again puts
much emphasis on her “San Andrés Archipelago”. For instance,

paragraph 8.6 asserts that the relevant coast of Colombia is the coast

of the “San Andrés Archipelago”. In what is no doubt an attempt to

suggest the extent of the “archipel ago”, paragraph 8.7 then gives an
overview of more than one page of the different features Colombia

considers to be a part of the “archipelago”. And again, this is followed

by paragraph 8.8, which stresses that “the San Andrés Archipelago

generates maritime entitlements on a 360º basis throughout this part of

the Caribbean Sea.”

4.5. Colombia, which purports to accept the applicability of the provisions

of the 1982 Law of the Sea Convention in respect of baselines, should

be fully aware that it is not th e “San Andrés Archipelago”, which
generates maritime entitlements, but the individual features scattered

over the Caribbean Sea which do so. And this is only the case to the

extent they do not fall under Article 121(3) of the 1982 Law of the Sea

Convention.

144
CCM, Vol. I, p. 74, para. 2.98.

104 B.T HE M ARITIME FEATURES

4.6. Before turning to a review of what these minor islands, cays and

banks really consist of, it is necessary to make clear that the analysis
that follows in no way signifies that Nicaragua accepts the self-serving

charts and surveys Colombia has produced. The intention of this

analysis is to demonstrate that even the information presented in these

Colombian documents does not support the consequences she attempts
to draw from them.

4.7. Figure 2.1 of the Counter-Memorial depicts the features Colombia

claims to be part of her “archipel ago” of San Andrés with a shaded

12-nautical-mile area around them. Possibly this was done because the
features otherwise are so tiny as to not be visible to the naked eye.

However, to establish the extent of the coasts of these features, that

12-nautical-mile limit is wholly irrelevant. Colombia does not cite any

example from the case law to support it s relevance, and it is of course

well known that it is the actual coast that provides the starting point
for the Court and arbitral tribunals to identify the relevant coasts of the

parties not the circles drawn around the actual coasts. This was most

recently confirmed in the Judgment of the Court in the case

concerning Maritime Delimitation in the Black Sea (Romania v.

Ukraine), which observes:

“The title of a State to the continental shelf and

to the exclusive economic zone is based on the
principle that the land dominates the sea
through the projection of the coasts or the
coastal fronts”45.

145
Maritime Delimitation in the Black Sea (Romania v. Ukr, Judgment of 3
February 2009, p. 26, para. 77.

1054.8. In accordance with the jurisprudence, Figure 4-1 depicts the coasts of
Nicaragua and Colombia without ar tificially inflating them by a 12-

nautical-mile straight or circular limit. This provides a vastly different

picture of the significance, or rath er lack thereof, of Colombia’s

“archipelago” than the figures Colombia has included in the Counter-

Memorial. Without the 12-nautical-mile zones added to them in the
Colombian figures, the islands and cays are hardly visible except for

their names, and are dwarfed in comparison with the mainland coast

of Nicaragua.

4.9. Other figures included in the Counter-Memorial also illustrate that
Colombia seeks to stretch the significance of her “archipelago”.

Figures 2.3 to 2.10, 146depicting individual features, which make up

the “archipelago”, and the variou s figures depicting the entire
147
“archipelago” (see e.g. figure 2.1 ) show a blue dotted line around

the features and an area of a lighter shade of blue than the surrounding
area. The legend attached to the figur es does not indicate what this

line and shading represent. A comparison with the relevant nautical

charts of Colombia indicates that these aspects of the figures do not

have any relevance for establishing either baselines or the relevant

coasts of the features concerne d. Figures 4-2 to 4-4 in this Reply
compare the Counter-Memorial’s graphical illustrations and the

Colombian charts for the features of Quitasueño, Serranilla and Bajo

Nuevo. Apart from the Counter-Memorial’s graphic illustrations and

the charts, Figures 4-2 to 4-4 also contain a figure identifying those

features on the Colombian nautical charts, which qualify as part of the

146
147CCM, Vol. III Maps, pp. 5-19.
Ibid, p. 1.

106 baseline in accordance with the relevant provisions of the 1982 Law
of the Sea Convention.

4.10. Another aspect of figure 2.10 in the Counter-Memorial, which depicts
the bank of Bajo Nuevo, is plainl y misleading. The figure depicts two

reef areas, East Reef and West Reef , in green. On nautical charts this

coloring is used to indicate areas which are above water at low-tide.

However, the relevant Colombian nautical chart, Chart 046, shows
that, rather than a drying reef as depicted on figure 2.10 of the

Counter-Memorial, in fact there is only a line or zone of breakers and

no solid land at all. There is only one insignificant sand cay, on which

a light is located. The 12-nautical -mile limit drawn from this single
point is shown on Chart 046, which confirms that the Colombian

authorities acknowledge that East Reef and West Reef do not generate

a territorial sea. Figure 4-4 comp ares Bajo Nuevo as depicted on
figure 2.10 of the Counter-Memorial to Chart 046. The third inset in

figure identifies the single point, which qualifies as part of the

baseline in accordance with the relevant provisions of the 1982 Law

of the Sea Convention.

4.11. The text of the Counter-Memorial attempts a similar blowup of the

relevant coasts of the features in cluded in Colombia’s “archipelago”.
At no point in the Counter-Memorial are the lengths of the relevant

coasts of the individual features id entified. On the other hand, the

Counter-Memorial abounds with references to the length and width of

the banks on which these features ar e located. One example is
sufficient to illustrate the predic ament in which the authors of the

Counter-Memorial no doubt saw themselves placed. Paragraph 2.31 of

the Counter-Memorial describes Bajo Nuevo:

107 “Bajo Nuevo is located 69 nm east of
Serranilla and 138 nm NNE of Serrana on a
bank of the same name, of an approximate

length of 33 km and width of 11 km. There are
three cays the largest of which, Low Cay, is at
the northern end of We st Reef, about 1.55
metres above sea level, with a lighthouse
operated by the Colombian Navy. The bank is

visited by fishing vessels – subject to the
national fishing regulati ons – from the islands
of San Andrés and Providencia in March and
April”.148

4.12. The description contains a reference to width and length of the bank of

Bajo Nuevo, but this is wholly ir relevant to identifying the relevant

coasts of the features on Bajo Nuevo. The only coastal information on

the cays on Bajo Nuevo is that they are three in number. That meager

information is not even correct. The relevant Colombian nautical

chart, Chart 046, only shows one feat ure on Bajo Nuevo, which is
above water at high tide (Cayo Bajo Nuevo), not three. A comparison

of the depiction of Cayo Bajo Nuevo and Cayo Serranilla on Chart

046 shows that the former is even smaller than the latter. On Chart

046, Cayo Bajo Nuevo is totally obscured by the cartographical

symbol for the light at that lo cation. Considering the figures the
Counter-Memorial provides for Cayo Serranilla, Cayo Bajo Nuevo

measures less than 100 meters acro ss. To describe Bajo Nuevo as

having “an approximate length of 33 km and width of 11 km” 149 is

misleading to say the least.

148CCM, Vol. I, p. 33 and 36, para. 2.31. Footnote omitted.
149See CCM, Vol. I, p. 33, para. 2.30.

1084.13. A further example of Colombia’s a ttempts to make more out of the

small cays than they actually are is provided by paragraph 2.30 of the
Counter-Memorial, which describes the Se rranilla cays. Again, the

information on the length of the bank on which these cays are located

is put up front. After this it is observed that “[t]here is a chain of coral
150
reefs and several cays” . There is a serious risk that this cavalier
description of the area could be misconstrued as implying the presence

of a significant coastal front. The re levant Colombian nautical charts

of Serranilla show that the opposite is true. Colombian charts 046 and

208 indicate the existence of three cays on Serranilla: Cayo Serranilla,
Middle Cay and East Cay. Far from forming a chain, as is suggested

by the Counter-Memorial, these cays are far apart. The distance from

Cayo Serranilla to Middle Cay is 5. 5 nautical miles (10 km) and the

distance from the latter to East Cay is 1.6 nautical miles (3 km).

Paragraph 2.30 provides figures for the length (650 meters) and width
(300 meters) of the largest of th e cays, Serranilla Cay. Colombian

nautical chart 208 points out that th e length of the coast of Serranilla

facing the coast of Nicaragua is only around 400 meters. Colombian

Chart 046 also provides another inte resting insight into the views of
the Colombian authorities dealing with nautical charts. Chart 046

shows the outer limit of the territo rial sea as a 12-nautical-mile arc

centered on Cayo Serranilla (see Figure 4-3). The other two cays

depicted on Chart 046 on Serranilla have been ignored. Apparently,
the Colombian authorities did not c onsider that these other features

qualified as part of the normal ba selines under Article 5 of the 1982

Law of the Sea Convention to establish the extent of the territorial sea.

This is in stark contrast with the Counter-Memorial, which goes as far

as listing these features on Serran illa not only as territorial sea
150
CCM, Vol. I, p. 33, para. 2.30.

109 basepoints, but also as part of the relevant coast of Colombia for the

delimitation of the continental shelf and the exclusive economic
151
zone .

4.14. A similar assessment can be made for the length of the other features

Colombia submits to be part of her relevant coast. That calculation

shows that Colombia’s “single island chain” 152 stretching for hundreds

of kilometers across the Caribbean is reduced to three small islands:

San Andrés which has a length of 13 kilometers, Providencia, which

has a length of 8 kilometers and its appendix, Santa Catalina which

has a length of 0.5 kilometer. The west facing coasts of the other
features in their totality does not add up to more than 0.9 kilometer,

though this is hard to measure as the features are very small. In

comparison, the distance between these individual features is

enormous. For instance, the islands of San Andrés and Providencia are

47 nautical miles (83 km) apart a nd the distance between Providencia

Island and the first cay to the north of Providencia, Cayo Serrana
(Southwest Cay), is about 80 nautical miles (126 km).

III. Nicaragua’s Undisputed Islands and Maritime Features

4.15. Where Colombia’s Counter-Memorial is excessively and

unrealistically generous in dealing w ith the features it considers to be

under her sovereignty –going as far as giving full weight in the
153
maritime delimitation to the submerged bank of Quitasueño– it

completely fails to appreciate the character and significance of the
islands along Nicaragua’s mainland coast. Nicaragua’s Memorial

151CCM, Vol. I, p. 342, para. 8.7.
152CPO, Vol. I, p. 84, para. 2.26.
153CCM, Vol. I, p. 391, para. 9.27 and p. 395, para. 9.37.

110 described these islands in paragraphs 3.9 and 3.10. The Counter-
Memorial makes it necessary to look at this matter in more detail. The

present section of the Reply will deal with the islands in the immediate

vicinity of the coast of Nicaragua, including the Corn (Maiz) Islands.

4.16. Nicaragua does not seek to artificially boost the significance of the

islands along her mainland coast, as Colombia is doing for her

“archipelago” of San Andrés and Providencia. At the same time,
Nicaragua does want to provide the Court with an accurate description

of the relevant geography. The truth of the matter is that there are

numerous islands along the mainland coast of Nicaragua, but only

three of them have a significant size: Great and Little Corn Island and
Cayo Miskito. Most of the other numerous islands along the coast of

Nicaragua are similar in size to the cays and rocks, that Colombia

considers to be part of her “ar chipelago” of San Andrés and
Providencia. However, what distinguishes these small islands and

rocks along the coast of Nicaragua from the latter features is that they

are not scattered far and wide, but, as will be demonstrated further

below, they form an integral part of the mainland coast of Nicaragua.

1. Corn Islands

4.17. Big and Little Corn Island, which toge ther constitute the Corn (Maiz)

Islands are respectively 12 and 6 square kilometers in size and have a

significant population. According to the 2005 census, the islands had a

combined population of over 6,600. A 2009 estimate puts this figure
around 7,400. During the 1960s and 1970s, fishing became the

economic mainstay of the islands, but more recently tourism on the

islands has grown considerably, with their many surrounding coral
reefs making them a popular destination for scuba diving and

111 snorkeling. The Corn Islands are approximately 26 nautical miles

from the Nicaraguan mainland, but due to numerous small islands,

reefs and rocks fringing Nicaragua’s mainland, the territorial seas of
the mainland and the Corn Islands merge.

4.18. Big and Little Corn Islands are isla nds in the sense of Article 121 of

the 1982 Law of the Sea Convention a nd are entitled to a continental

shelf and exclusive economic zone. Although they are a little smaller

than the island of San Andrés, they clearly fall in the same category.
Unlike the cays scattered along the banks which make up Colombia’s

“archipelago”, Big and Little Corn Island are not rocks in the sense of

Article 121, paragraph 3 154. Colombia in the Counter-Memorial, in

indicating the location of various 200-nautical-mile limits, takes the

opposite view. Figure 7.1 of the Counter-Memorial, which depicts a
200-nautical-mile limit for Nicaragua, ignores Big and Little Corn

Island, as well as Cayo Miskito 155. The outer limit of Nicaragua taking

into account the baselines of Nicaragua established in accordance with

the relevant provisions of the 1982 Law of the Sea Convention is

depicted in Figure 4-5.

4.19. The significance of Big and Little Corn Island entails the question of

what effect the maritime entitlem ent they potentially generate could

have for the delimitation between Nicaragua and Colombia. As will be

discussed in Chapter V, the applicable law indicates that relatively

minor islands like Big and Little Corn Island and San Andrés and
Providencia in a continental shelf delimitation involving the mainland

154The status of these cays under the international law applicable to the entitlement
of islands to maritime zones is discussed in section V and VI of the Reply.
155For further information on Cayo Miskito see further below pp. 113 and 115,
paras. 4.20 and 4.24.

112 coasts of Nicaragua and Colombia should not receive any weight. The
same conclusion would apply to a ny delimitation of the exclusive

economic zone involving the mainland coast of Nicaragua.

2. Cayo Miskito Island

4.20. The third significant island off the mainland coast of Nicaragua is

Cayo Miskito. Cayo Miskito is part of the Miskito Cays and is by far
the largest island of that group. It measures approximately 21 square

kilometers. The Miskito Cays were declared a protected area in 1991.

The Miskito Cays Biological Reserv e is one of 78 protected areas in

Nicaragua. Miskito Cay is not detach ed from the mainland coast of
Nicaragua since there is a continuou s chain of islands stretching from

the Nicaraguan mainland coast up to and beyond Miskito Cay. A

similar chain of small islands fringing Nicaragua’s mainland coast is
found in the area between the Rio Grande and Punta de Perlas, known

as Cayos Perlas and Cayos Man of War. These various groups

constitute a part of the mainland co astline of Nicaragua. In assessing

the delimitation between Nicaragua and Colombia they have to be
treated as an integral part of the mainland coast of Nicaragua.

4.21. The distinction between islands fringing a mainland coast and isolated
offshore islands is well known in th e jurisprudence of the Court and

arbitral tribunals. In the recent Judgment in the case concerning

Maritime Delimitation in the Black Sea (Romania v. Ukraine) , the

Court observed that:

“in one maritime delimitation arbitration, an
international tribunal placed base points lying

on the low water line of certain fringe islands
considered to constitu te part of the very
coastline of one of the parties ( Award of the

113 Arbitral Tribunal in the Second Stage of the
Proceedings between Eritrea and Yemen

(Maritime Delimitation), 17 December 1999,
RIAA, Vol. XXII (2001), pp. 367-368, paras.
139-146). However, Serpents’ Island, lying
alone and some 20 nautic al miles away from
the mainland, is not one of a cluster of fringe
156
islands constituting “the coast” of Ukraine.”

4.22. The Award of the Arbitral Trib unal in the Second Stage of the

Proceedings between Eritrea and Yemen (Maritime Delimitation) , to

which the Court referred in the Judgment in the case concerning
Maritime Delimitation in the Black Sea, observes in re spect of the

Dahlak islands of Eritrea:

“This tightly knit group of islands and islets, or
“carpet” of islands and islets as Eritrea

preferred to call it, of which the larger islands
have a considerable population, is a typical
example of a group of islands that forms an
integral part of the general coastal
configuration. It seems in practice always to

have been treated as such. It follows that the
waters inside the island system will be internal
or national waters and that the baseline of the
territorial sea will be found somewhere at the
157
external fringe of the island system” .

4.23. The Tribunal’s treatment of the Dahl ak islands can be distinguished

from its findings on Jabal al-Tayr and the Zubayr Group of Yemen:

156Maritime Delimitation in the Black Sea (Romania v. Ukraine) , I.C.J., Judgment
of 3 February 2009, p. 45, para. 149.
157Award of the Arbitral Tribunal in the Second Stage of the Proceedings between
Eritrea and Yemen (Maritime Delimitation), 17 December 1999, ILR, Vol. 119,
(2002), p. 459, para. 139.

114 “Yemen employed both the small single island
of al-Tayr and the grou p of islands called al-
Zubayr as controlling base points, so that the
Yemen-claimed median line boundary is

“median” only in the area of sea west of these
islands. These islands do not constitute a part
of Yemen’s mainland coast. Moreover, their
barren and inhospitabl e nature and their
position well out to sea, which have already

been described in the Award on Sovereignty,
mean that they should not be taken into
consideration in computing the boundary line
between Yemen and Eritrea.” 158

4.24. The preceding analysis indicates that the Counter-Memorial does not

characterize the islands and cays off Nicaragua’s mainland coast

properly. The features over which Colombia claims sovereignty are

located over 300 nautical miles from her mainland but this is not the
case with the features under uncontested sovereignty of Nicaragua. All

these islands and cays are fringing the mainland coast of Nicaragua.

The jurisprudence indicates that such islands are an integral part of the

mainland coast. The Corn Islands and Cayo Miskito are in all other

respects comparable to the islands of San Andrés and Providencia. In
fact, the sum of the land areas of these three islands is roughly equal

to the sum of the land area of Sa n Andrés and Providencia/Santa

Catalina.

IV. The Special Case of the Submerged Bank of Quitasueño

4.25. The most egregious claim by Colomb ia with respect to the physical
aspects and legal consequences of the features she claims off the

158
Award of the Arbitral Tribunal in the Second Stage of the Proceedings between
Eritrea and Yemen (Maritime Delimitation), 17 December 1999, ILR,Vol. 119,
(2002), p. 461, para. 147.

115 mainland coast of Nicaragua is that regarding the bank of Quitasueño

(see Figure 4-6). With the exception of a survey made by the

Colombian navy last year, in 2008, all the information available for
nearly two hundred years indicates that this feature is a bank with no

rocks or cays emerging at high tide. The emphasis Colombia makes in

converting this bank into a cay a nd then claiming sovereignty over it

is because its location nearer to the Nicaraguan mainland coast makes

it most attractive. For this reason, this section will devote a more

complete analysis to this feature in order to evince the spuriousness of
Colombia’s claims.

4.26. The Counter-Memorial goes to great length to show that there are

islands that have entitlement to a continental shelf and exclusive
159
economic zone on the submerged bank of Quitasueño . An analysis
of the material which has been presented by Colombia points in an

altogether different direction. The surveys carried out by the United

Kingdom in the first half of the nineteenth century and by Colombia in

1937 both showed that there were no islands on the bank of

Quitasueño. This same conclusion fo llows from the nautical charts of

Colombia covering the area of Qu itasueño. This conclusion also
follows from the practice of the United States in her dealings with

Colombia and others over the bank of Quitasueño. Nonetheless, the

Counter-Memorial, by manipulating the available information, tries to

create the impression that there always has been a “Cay of
160
Quitasueño” over which Colombia has exercised sovereignty. The
Reply will deal with these three issues in the following sections and

draw the pertinent conclu sions from that analysis . In brief, the main

159CCM, Vol. I, pp. 348-349, paras. 8.21-8.23.
160Ibid, pp. 91-147, paras. 3.24-3.156.

116 conclusion is that Quitasueño is a submerged bank located on the

continental shelf and within the exclusive economic zone of

Nicaragua and should be treated as part of these areas.

A. SURVEYS OF THE B ANK OF Q UITASUEÑO

4.27. A first detailed survey of the bank of Quitasueño was carried out in

the 1830s by Captain Richard Owen of the Royal Navy. Before that

time this part of the western Caribb ean had already been surveyed by
Spain. The Counter-Memorial of Colombia produces two documents

relating to those survey activities of Spain. 161 Neither document

provides any information on the bank of Quitasueño. The 1820 Sailing

Directions of the Spanish Navy indi cate that they were only able to

provide detailed information on Bajo Nuevo:

“Of all the other shoals and islands drawn on
the chart, we are only able to provide detailed
information on Bajo Nuevo, given that,

although those of Serranilla, Serrana and
Roncador were recognized and located, we
have no additional data other than their
situation; and although their positions have

been rectified on the chart, we include the 162a
on them for further information for sailors.”

4.28. The detailed survey of the bank of Quitasueño carried out in the 1830s

by Captain Richard Owen of the Royal Navy did not find any cays on
163
the bank. The survey does observe that one part of the reef

“appeared to be accumulating different substances so as to render it

probable that a cay will be formed there at no very remote period”.

161
CCM, Vol. II-A, pp. 123-124 and pp. 615-617, Annex 23 and 172.
162Ibid, p. 616, Annex 172.
163NR, Vol. II, Annex 12.

117 The 1861 edition of the West India Pilot (Vol. I) published by the

British Admiralty contains the same information on Quitasueño 164.

4.29. A further detailed survey of the bank of Quitasueño was carried out by

the Colombian authorities in 1937. A report of that survey is contained

in Annex 120 of the Counter-Memorial. The English translation of the
report included in Annex 120 does not reproduce the information on

the bank of Quitasueño in its entirety. The original Spanish text of the

report is, however, very explicit, as it observes:

“QUITASUEÑO.- No existe el cayo de
Quitasueño. Es apenas un bajo muy peligroso

para la navegación […]

Or translated in English:

QUITASUEÑO.- The cay of Quitasueño does
not exist. It hardly is a shoal, which is very
dangerous to navigation.”

4.30. The Colombian report further notes:

“In the northern extremity of the reef of this
extensive shoal, above the rock, is the artificial
base of armored concrete [of the light erected
by the United States], which is the only thing

which emerges from the 165ers in the entire
bank of Quitasueño”.

4.31. Finally, the report observes that:

“There is no guano or eggs in Quitasueño
because there is no firm land…”. 166

164
165NR, Vol. II, Annex 13.
This is also indicated by two photographs of the light on p. 6 of report (see NR,
Vol. II, Annex 14). The caption of these photographs reads: “the concrete base is the
only part of the bank which emerges from the waters”.
166NR, Vol. II, Annex 14.

1184.32. The General Maritime Directorate of the Colombian Navy has

published four large scale charts of the bank of Quitasueño:

COL 215 Cayo Quitasueño (N) 1:25,000
COL 416 Banco Quitasueño 1:100,000

COL 630 Banco Quitasueño (S) 1:50,000
COL 631 Banco Quitasueño (N) 1:50,000

4.33. These charts are in conformity with the findings of the XIX century

British and 1937 Colombian surveys of the bank of Quitasueño. They

do not indicate the presence of any island on the bank of Quitasueño.

4.34. Notwithstanding this conclusive evidence to the contrary, the

Counter-Memorial maintains that there always has been a cay on the
167
bank of Quitasueño. The Counter-Memorial refers to “[e]ight
168
unnamed cays” and “islands” on Quitasueño. As is apparent from

the Counter-Memorial, these “islands” where only “discovered” in
July 2008, when the Colombian authorities carried out a study of

Quitasueño. 169The technical report of that study is contained in

Annex 171 of the Counter-Memorial. Although this belated discovery

of “islands” on the bank of Quitasueño cannot change the conclusions

on the status of Quitasueño as it appears from information and the
170
practice of the Parties spanning almost two centuries , it is of interest

to note that the technical report contained in A nnex 171 of the

Counter-Memorial tends to confirm that information and practice

167
168See e.g. CCM, Vol. I, p. 178, para. 4.58.
169See CCM, Vol. I, respectively p. 15, para. 2.5 and p. 348, para. 8.21.
170CCM, Vol. II-A, p. 603, Annex 171.
See below Sec. B, pp. 120-122.

119 rather than the Counter-Memorial’s suggestions that there are

“islands” on the bank of Quitasueño.

4.35. In fact, the technical report prepared by the Colombian Navy in

September 2008 confirms that ther e are not even small cays on

Quitasueño. If anything, this shows the enormity of Colombia’s

attempt to unjustifiably accord this feature weight in the maritime

delimitation with Nicaragua.

B.T HE PRACTICE OF THE U NITED STATES IN R ESPECT OF THE B ANK OF
Q UITASUEÑO

4.36. The Counter-Memorial extensively discusses the 1972 Treaty between

the United States and Colombia c oncerning the status of Quitasueño,

Roncador, and Serrana and subsequent agreements in the execution of

this Treaty.71The first observation with respect to this Treaty is that

all the negotiations were careful to avoid any recognition by the
172
United States of sovereignty of Colombia over these features.

4.37. On a number of occasions, the Counter-Memorial suggests that the

1972 Treaty and these subsequent ag reements were concerned with
the “cays of Roncador, Quitasueño and Serrana”. 173A review of the

1972 Treaty and subsequent agreements in respect of fisheries in the

area of the banks of Roncador, Quitasueño and Serrana shows that the

position of the United States to the contrary indicates that she

recognized that there were cays on the banks of Roncador and

Serrana, but not on the bank of Quitasueño.

171
172CCM, Vol. I, pp. 174-188, paras. 4.51-4.77.
173See NM, Vol. I, pp. 132-136, paras. 2.157-2.166.
See e.g. CCM, Vol. I, p. 181, para. 4.62.

1204.38. First, the 1972 Treaty deals separa tely with Quitasueño on the one

hand, and Roncador and Serrana, on the other. 174Article 2 refers to

“fishing in the waters of Quitasueño”, whereas Article 3 concerning

Roncador and Serrana refers to “fishing in the waters adjacent to these

cays”. This same distinction be tween Quitasueño, on the one hand,

and Roncador and Serrana on the other, is made in the 1983

Agreement on regulation of fishing ri ghts of nationals and vessels of
the United States under the 1972 Treaty. 175 Paragraph 5 of these notes

observes:

“The Parties agree that the adjacent waters to

Quita Sueño described in Article 2 [of the 1972
Treaty] cover the area enclosed by coordinates
13 degrees 55 minutes north by 14 degrees 43
minutes north and 80 degrees 55 minutes west

by 81 degrees 28 minutes west and the waters
adjacent described in Ar ticle 3 are the areas
within 12 nautical miles of Roncador and
Serrana measured from the baselines from

which the br176th of the territorial sea is
measured.”

4.39. All subsequent documents related to the 1983 Agreement, which are

included in Annexes 11 to 14 and 15 to 16 of the Counter-Memorial,

use this area of application, whic h indicates that on Roncador and

174For the text of the 1972 Treaty, see CCM, Vol. II-A, pp. 9-23, Annex 3.
175Agreement between Colomb ia and the United States of America on certain
fishing rights in implementation of the Treaty between Colombia and the United
States of America of 8 September 1972, concerning the status of Quitasueño,
Roncador and Serrana: Diplomatic Note Nº 711 from the Embassy of the United

States of America to the Colombian Foreign Ministry, 24 October 1983; and
Diplomatic Note Nº DM 01763 from the Colombian Foreign Ministry to the
Embassy of the United States of Ameri ca, 6 December 1983 (reproduced in CCM,
176. II-A, pp. 45-49, Annex 8).
CCM, Vol. II-A, pp. 45-49, Annex 8.

121 Serrana there is a low-water line from which to measure this area, but

that this is not the case for the submerged bank of Quitasueño.

4.40. Two final examples of the Colombia’s apparent embarrassment

concerning the facts about Quitasueño emerge from the cartography of

Quitasueño. First, although the Counter-Memorial makes numerous

references to Colombia’s own nauti cal charts, the only nautical chart
that is actually included in the Counter-Memorial, is Chart 1601,

reproduced in figure 9.3. This Chart is at such a small scale that it

does not allow any assessment of the situation of Quitasueño. As was

demonstrated earlier (paragraphs 4.32 to 4.35), the four large scale

Colombian charts of the area of Quitasueño reveal that there are no
features on Quitasueño above water at high tide. This latter fact also

renders incorrect, if not utterly misleading, the information contained

in the legend of figure 2.8 of the Counter-Memorial depicting the area

of Quitasueño. The caption of figur e 2.8 reads “Coastal information

sources: Colombian nautical ch arts: 215, 630 and 631, supplemented
with information collected by the Colombian Navy in 2008” 17.

4.41. As these Colombian charts indicate that there is no area above water at

high tide, the information collected by the Colombian Navy in 2008 is

the only “coastal” information source of this figure.

C.C ONCLUSIONS ON THE STATUS OF Q UITASUEÑO

4.42. Quitasueño is a submerged bank. This is confirmed by surveys from

the United Kingdom in the 1830s and Colombia herself in 1937. This

is also confirmed by Colombia’s na utical charts. The “discovery” of

177
CCM. Vol. III Maps, p. 15.

122 “islands” on the bank of Quitasueño in 2008 cannot change this

situation. The date of preparation of the report of the 2008 study of
Colombia is telling. It was drawn up in September 2008: only a couple

of months before Colombia had to file her Counter-Memorial.

Apparently, the drafters of the Counter-Memorial realized that the

materials which were already at their disposal did not advance
Colombia’s case at all. The bela ted preparation of the 2008 report

does not change the situation. Up to the preparation of the 2008 report,

all surveys and nautical charts indicated that there were no islands on

the bank of Quitasueño. The applicab le law on baselines as discussed
in Chapter II Section I indicates th at as a consequence there are no

features on Quitasueño, that are entitl ed to a territorial sea, let alone a

continental shelf or exclusive economic zone.

4.43. Nicaragua has consistently claimed that the bank of Quitasueño is part
of her continental shelf and exclusive economic zone 17. Colombia

cannot at this late stage of the pr oceedings seek to convert what has

always been recognized to be a submerged bank into an “island”.

Consequently, the area of Quitasueño has to be treated as any other
part of the continental shelf.

V. Conclusions

4.44. For the delimitation of the maritime boundaries between Nicaragua

and Colombia, Colombia’s islands and cays do not have a role to play

in view of the broader geogra phical framework involving mainland
coasts as described in Chapter V of the Reply. These islands and cays

do not constitute a single coastal fr ont and all the individual features

178
NM, Vol. I, p. 146, para. 2.187 and CCM, Vol. I, pp. 30-32, paras. 2.25-2.29.

123 have to be assessed separately in the light of the applicable law. The
jurisprudence indicates that such features do not block the seaward

projection of a much larger mainland coast. In the present case, this

implies that the seaward projectio n of Nicaragua’s mainland coast
extends up to the outer limit of Nicaragua’s maritime zones.

4.45. Apart from San Andrés and Providencia, the other features included in

Colombia’s “archipelago” do not have even a potential continental
shelf or exclusive economic zone entitlement. They are rocks in the

sense of paragraph 3 of Article 121 of the 1982 Law of the Sea

Convention, which, as is recognized by the Counter-Memorial,

constitutes customary international law. The interpretation of Article
121(3) of the 1982 Law of the Sea Convention Colombia herself has

provided inescapably leads to this conclusion.

4.46. The Counter-Memorial does not characterize the islands and cays off

Nicaragua’s mainland coast properly. These islands and cays are

islands fringing the mainland coast of Nicaragua. The jurisprudence

indicates that such islands are an integral part of the mainland coast.

4.47. The Counter-Memorial repeatedly misrepresents the facts to create the

impression that the “archipelago” is much more significant than it
actually is. A comparison with other information and Colombian

nautical charts exposes these attempts and confirms the true nature of

these features. The Counter-Memorial’s misrepresentation of the facts

is particularly egregious in th e case of the bank of Quitasueño.
Colombia’s various attempts to su ggest that there are islands on the

bank are not borne out by the ev idence. Quitasueño is only a

submerged bank.

124 CHAPTER V

ENCLAVING ISLANDS AND CAYS

I. Introduction

5.1. 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. Chapter VI below will deal with the

Colombian proposition that the deli mitation should only involve the
maritime features of both Parties and not their mainland coasts and

that full effect should be given in the delimitation to all the features

over which Colombia claims sovere ignty, without any attention given

either to Nicaragua’s mainland coast or her own.

5.2. The present chapter will deal with the treatment of the maritime

features over which Colombia cl aims sovereignty and have the
potential for generating shelf rights in the delimitation of the maritime

boundary between the two Parties. If, as will be demonstrated in this

chapter, the islands of San Andrés and Providencia/Santa Catalina

with potential entitlements beyond a territorial sea should be limited
within a 12 nautical-mile radius, then a fortiori the even more minor

features should be enclaved within an even more restricted area.

II. Islands and Rocks

5.3. Chapter IV demonstrated that of all the features claimed by Colombia,

the only ones that meet the criteria to potentially generate entitlements

to other areas beyond a territorial s ea are the three is lands identified

125 by name in the 1928 Treaty; that is, the islands of San Andrés,
Providencia and its small appendix, Santa Catalina. These are the only

features of those over which Colomb ia claims sovereignty that could

in principle fill the generally accepted criteria to potentially generate
rights to a continental shelf of th eir own or an exclusive economic

zone. The rest of the cays at issue are “rocks” under Article 121(3) of

the 1982 Law of the Sea Convention with no human habitation or

economic life of their own.

5.4. The islands of San Andrés and Pr ovidencia 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 econo mic zone based on the distance

principle.

5.5. It is clear from the Judgments of the Court and the awards of

arbitration tribunals that islands such as these have never (not

sometimes, but emphatically never) been given full effect in a

delimitation involving an extensive mainland coast.

5.6. Substantial island states, like Malta, have been attributed curtailed

maritime areas, and densely populated largely autonomous islands like
the Channel Islands have been enclaved. Smaller islands have been

either ignored (e.g. Fifla) or attrib uted very limited effects. Usually

this reduced effect given to these smaller islands and features (like

Seal Island in the Gulf of Maine case) has been with the intention of
correcting an inadequate result and not based on any intrinsic need to

attribute maritime areas of their own to these features.

126 III. Maritime Areas Involved

5.7. This is a case in which, due to the extensive physical shelf of one of

the parties (Nicaragua ), the boundary to be delimited would lie

beyond the maximum exclusive economic zone entitlement of 200
nautical miles. This circumstance do es not affect the legal logic that

has been used in previous cases in which similar circumstances have

occurred within a smaller delimitation area.

5.8. Nicaragua’s request is fo r a delimitation of the continental shelves of

both Parties since this is the onl y area generated by the mainland

territory of the Parties where thei r entitlements meet and overlap.

Because the delimitation area lies more than 200 nautical miles from
Nicaragua’s baselines along its mainla nd coast, there is no need, in

Nicaragua’s view, for delimitatio n of a boundary separating the

Parties’ respective exclusive economic zones. The only way that an
exclusive economic zone delimitation would be required in this case is

if the Court considered that the sm all islands off Nicaragua’s coast,

San Andrés and Providencia (inc luding Santa Catalina), should be

entitled to maritime areas beyond the 12 nautical-mile radius that legal
logic and equity would accord them. If they are limited to an area

equivalent to their maximum territorial sea allowed by customary

international law as reflected in the 1982 Law of the Sea Convention,
then there is no need of any other delimitation between the maritime

areas of the Parties. Figure 5-1 shows the result of allocating 12-

nautical-mile territorial sea enclaves to the main islands of San Andrés

and Providencia/Santa Catalina.

1275.9. It could be argued that the questio n of an enclave itself involves a

discussion of a delimitation of the exclusive economic zone and other

areas between these islands and th e mainland coast of Nicaragua. The

reality is that if these islands are enclaved, any discussion on

delimitation of continental shelf areas or exclusive economic zones of

these islands would be academic. The precedent and, more than

precedent, the legal logic used by the Court of Arb itration in the

Channel Islands case ˗which has never been questioned ˗ resulted in

the enclavement of these very important islands. There is no reason

whatsoever for this case to be different.

IV. Enclavement Is Necessary to Obtain an Equitable Result

5.10. According to Colombia, “Nicaragua’s attempt to enclave Colombia’s
179
islands has no legal support” . This emphatic assertion must be

discussed in context:

- the whole area to be delimitated must be taken into consideration
and not only the area between the islands of San Andrés and

Providencia and Nicaragua’s undisputed islands located nearer the

mainland coast 18;

- contrary to Colombia’s assertions 181, the primary features to be

taken into account are the resp ective mainland coasts of the

Parties182;

- in any case, the so called “San Andrés Archipelago” is certainly
183
not as extensive as Colombia claims, and it does not constitute a

17CCM, Vol. I, Sec. D. (see pp. 326-336, paras. 7.35-7.57).
18See above, Sec. III, pp. 127-128, paras. 5.7-5.9.
18See CCM, Vol. I, p. 327, para. 7.37.
18See above, Chap. II. Sec. I. pp. 65-66, paras. 2.7-2.10.
183
See above, pp. 32-55, paras. 1.29-1.97. See also CCM, Vol. I, p. 343, para. 8.8.

128 “defensive wall” 184 built between herself and Nicaragua’s rights

over maritime areas adjacent to her mainland coast.

5.11. Colombia puts forward two main arguments in order to rebut

Nicaragua’s position that all Colombian islands situated on

Nicaragua’s continental shelf should be enclaved. First, she asserts
that “the Colombian islands still possess coasts and thus constitute,

both individually and collec tively, coastal fronts.” 185 Second, and

“[m]ore importantly, however, unde r international law a State’s

entitlement to maritime areas – whether continental shelf or exclusive

economic zone – is based on the pr ojection of its coast out to a
186
distance of 200 nautical miles from the State’s baselines.”

5.12. In respect to the first argument, there can, indeed be no doubt that

islands possess coasts and can constitute coastal fronts but their effect

is, in principle, individual, not coll ective. In any case, this is not the

present issue: that islands generate entitlements to maritime areas is

one thing, but the extension of the maritime area they are entitled to in
a delimitation is quite another. Th e fact that islands “constitute …

coastal fronts” and generate maritime areas, does not mean that in a

delimitation the coastal fronts of these islands should supersede those

of the much larger coastal front of the mainland involved in such a

delimitation or be attributed an inequitable portion of those areas.

5.13. The second assertion is also not corr ect with respect to the limits it
indicates for continental shelf entitlement. The continental shelf

entitlement is not limited by law or by nature to 200 nautical miles but

184See also, Chap. VI, pp. 145-156, paras. 6.9-6.24.
185CCM, Vol. I, p. 329, para. 7.39.
186Ibid.

129 up to the limits reflected in Article 76 of 1982 Law of the Sea

Convention.

5.14. Without going into this question in detail, sinc e this will be dealt

extensively in Chapter VI below, the elementary fact must be recalled

that certain maritime features, in particular “rocks which cannot

sustain human habitation or econo mic life of their own … have no
exclusive economic zone or continental shelf”, by virtue of Article

121(3) of 1982 Law of the Sea Convention. In the present case, it

must be noted that the Counter-Memorial completely ignores this

provision. This is remarkable on two counts. First, the Counter-

Memorial recognizes that “the relevant provisions of the Convention
dealing with a coastal State’s baselines and its entitlement to maritime

areas […] reflect well establis hed principles of customary

international law”. 187 The Counter-Memorial does not make an

exception for Article 121(3) of the 1982 Law of the Sea Convention.

5.15. Second, the fact that the Counter-Memorial ignores paragraph 3 of

Article 121 of the 1982 Law of the Sea Convention becomes even

more perplexing in view of Colombia’s observation that “[t]here is no

minimum size for an island provide d it meets the cr iteria stated on

Article 121(1) of being ‘naturally formed’ and ‘above water at high
tide’”18. Colombia is, of course, well aware that size does matter in

establishing whether or not a fe ature qualifies as a “rock” under

Article 121(3) of the 1982 Law of the Sea Convention. On 8

December 1982, at the closing sess ion of the Third United Nations

Conference on the Law of the Sea, th e delegation of Colombia made

187
188CM, Vol. I, p. 306, para. 4.
Ibid, p. 349, para. 8.22.

130 the following statement on Article 121 of the 1982 Law of the Sea

Convention:

“Article 121 defines what constitutes an island
and the difference between islands and rocks.
Islands have a right to a territorial sea, a
continental shelf and an exclusive economic

zone. Rocks are entitled only to a territorial
sea since they cannot sustain human habitation
or economic life of their own. This is logical.
It is a “package” which results from the view
that these maritime spaces have been granted

to the benefit of the inhabitants, with an
economic concept. Any other interpretation
would distort the concept.” 189

5.16. However, it is exactly such a distortion of the applicable law

Colombia is now seeking to her own advantage. As will be
demonstrated further in the present chapter, the Counter-Memorial is

not only trying to get a recognition that certain features, which under

Colombia’s statement at the closing session of the Third Conference

are rocks, should have an exclus ive economic zone and continental

shelf but is also seeking to give these features full weight in the

delimitation of these zones betw een Nicaragua and Colombia. The
Counter-Memorial does not even stop at that, but also seeks to accord

this treatment to the submerged bank of Quitasueño 190.

5.17. As shown in Chapter IV above, th ere 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 of Article 121(3) of the 1982 Law of the Sea Convention. It

189Third United Nations Conferen ce on the Law of the Sea; Official Records, Vol.
XVII, p. 83, para. 251.
190CCM, Vol. I, p. 342, para. 8.7; pp. 348-349, paras. 8.21-8.23.

131 follows that with the only exceptions of the islands of San Andrés,

Providencia and its contiguous ap pendix, Santa Catalina, all other
maritime features in the area clai med by Colombia – even supposing

the Colombian claims to sovereignty over these features are founded –
191
“have no exclusive economic zone or continental shelf” . Figure 5-2

shows the results of awarding 3-nau tical-mile enclaves to the minor
cays and rocks, in addition to the 12-nautical-mile enclaves allocated

to the main islands of San Andrés and Providencia.

V. Channel Islands Arbitration

5.18. The treatment of the Channel Islands in the Anglo-French arbitration

provides the classic example that in ternational courts and tribunals
hold that offshore islands do not block the frontal projection of a

longer opposite mainland coast. The Counter-Memorial is quite aware

of this and while not daring to question the reasoning behind that

decision, attempts to differentiate th e situation of the Channel Islands
with that of the three islands under consideration.

5.19. In certain respects the situations are not exactly comparable. The

Channel Islands are an autonomous political entity which is not an
integral part of the United Kingdom; they have a substantial

population; a long historical record as an internationa l actor; and an

economic activity that possibly even surpasses that of either of the

Parties to this case and certainly th at of Nicaragua. If these were the

only points of comparison, then it woul d be very difficult to sustain
that the “San Andrés Archipelago” should receive even the enclave of

12 nautical miles that was accorded to the Channel Islands. In fact, in

191
Art. 121(3) of the UNCLOS.

132 the Channel Islands arbitration, France was requesting that the islands

be enclaved within 6 nautical miles, and the Court of Arbitration took

into consideration some of the rele vant aspects of the Channel Islands
listed above in arriving at its decision.

5.20. However the reasoning of the distingui shed arbitral tribunal was not

based on these special characteristics of the Channel Islands but rather

on their location in the area of delimitation. The Colombian Counter-

Memorial accepts that geographical reality matters and affirms:

“It was because the Channel Islands were

situated ‘on the wrong side’ of the mid-
channel median line just off the French
mainland coast that they were enclaved” 192.

5.21. What Colombia tries to brush aside is that the situation of the three
islands in the present case is entirely similar. As stated in the

Nicaraguan Memorial, this Archipelago “is not only ‘on the wrong

side’ of the median line but w holly detached from Colombia.” 193The

islands of this Archipelago are located slightly under 400 nautical

miles from the Colombian mainland and around 100 nautical miles
from the Nicaraguan mainland. Chap ter III above ha s demonstrated

that the continental shelf of Colo mbia, allowance made for all the

possibilities envisioned in Article 76 of the 1982 Law of the Sea

Convention, only extends up to ma ximum distance of 200 nautical

miles from her mainland coast whilst the Nicaraguan continental shelf

reaches well beyond 350 nautical miles from her mainland coast. This

192CCM. Vol. I, p. 332, para. 7.46.
193NM, Vol. I, pp. 242-243, para. 3.105.

133 is simply a statement of a fact, a physical fact that is perfectly

demonstrable and is in the public domain.

5.22. Applying to the present situation th is well-established precedent that

islands located “on the wrong side” of the median line will be

enclaved, the result would be that the “San Andrés Archipelago” is
located not just ‘on the wrong side’ of the line dividing the continental

shelf of the two Parties, but far inside the wrong side of that line.

Furthermore, these islands are not only located on the wrong side of

the dividing line, but on an entirely separate geological formation ˗the
continental shelf of Nicaragua ˗ which is a separate and distinct

formation from that of the Colombian continental shelf.

5.23. Colombia also attempts to distinguish the situation of the Channel

Islands with that of the three islands by stating that “[t]he present case
is entirely different. The mainland coasts of the Parties are more than

400 nautical miles apart...” 194 Yes, it is undeniable that the distances

involved are different. But this does not negate the physical reality

that the natural prolongation of th e mainland territory of Nicaragua
reaches well beyond 200 nautical miles, and meets the much less

massive prolongation of Colombia. The mainland coasts of the United

Kingdom and France are closer to each other, to be sure, but it was not

due to their relative closeness that a delimitation became necessary but
because these shelves met and overlapped within the distances and in

the way recognized at the time by customary international law. This is

no different from the present case.

194
CCM, Vol. I, p. 332, para. 7.47.

1345.24. If the question of distance were to have any significance it would be to

emphasize the need to enclave the islands of the “San Andrés
Archipelago”. It is a simple mathematical reality that the longer the

distance from the coast of an island or other such feature, the greater

the impact it will have on a delim itation if it is given any effect

beyond an enclave. If Colombia’s views were to be accepted, France

would have been excluded from a significant part of the English
Channel (Figure 5-3). Had the Court of Arbitration taken into account

the proposition of Colombia’s Counter-Memorial that islands block

the frontal coastal projection of ma inland coast, it could never have

effected the delimitation it actually did. In the present case, and due

precisely to the greater distance, the effect would be to totally exclude
Nicaragua from close to 90% of her continental shelf areas. In fact, the

blockage would be so complete as to only leave to Nicaragua what

would amount to a beach front.

5.25. The security questions raised by the proximity of the Channel Islands
to the French coast were also an issue. This situation also has

similarities with that of the “San Andrés Archipelago”. The fact that

these three islands lie much closer to the Nicaraguan mainland than to

that of the Colombian mainland m ilitates in favour of their being

enclaved since any activities or regulations around them could affect
the traffic to and from Nicaraguan por ts. The effects of this proximity

to the Nicaraguan ports, that is, the Nicaraguan mainland, have been

pointed out and taken into c onsideration in international
195
organizations .

195
See e.g. Report to tst Maritime Safety Committee, of the Sub-Committee on
Safety of Navigation, 51 session, Agenda item 19, IMO Docs. NAV 51/19 of 4 July

135 VI. Other Precedents

5.26. The precedents invoked by Colombia of cases in which islands have

received a more generous treatment than an enclave 196do not help

her:

1. In Jan Mayen, the main coast of Norway was irrelevant (contrary

to what is the case here for the coasts of both countries) and the
197
Court accepted the position of the Parties to provisionally draw

the median line between Greenland and Jan Mayen taking into

consideration the whole coast of the latter; however, the Court
considered that “[t]he disparity between the lengths of coasts thus

constitutes a special circumstan ce” and, “in view of the great

disparity of the lengths of the coasts, that the application of the

median line leads to manifestly inequitable results. It follows that,

in the light of the disparity of coastal lengths, the median line

should be adjusted or shifted in such a way as to effect a
198
delimitation closer to the coast of Jan Mayen” . To a much

greater degree, the same holds in the present case if one compares

the length of the coasts of Ni caragua on the one hand and of the

islands claimed by Colombia on the other hand. Two other
considerations are relevant. The distance involved between

Greenland and Jan Mayen implied that the dispute in reality

centered around an area beyond 150 nautical miles from the

2005, para. 3.31: “The Sub-Committee noted that the proposed TSS (Traffic
Separation Schemes) for the port of San Andrés Island was close to Nicaragua and
as such Colombia should have consulted Nicaragua when submitting this proposal

196it could affect the traffic to and from Nicaraguan ports.” (NR, Vol. II, Annex 15).
197See CCM, Vol. I, p. 329, para. 7.40.
See Maritime Delimitation in the Area between Greenland and Jan Mayen,
198gment, I.C.J. Reports 1993,p. 47 and 79, paras. 18-20.
Ibid, pp. 68-69, paras. 68-69.

136 mainland coast of Greenland out of a total maximum claim to a

200-nautical-mile exclusive economic zone. In the present case,
the claims of Colombia (which will be analyzed below in Chapter

VI) would only leave for Nicarag ua an area of less than 70

nautical miles from her mainland coast out of a claim that reaches

beyond a distance of 300 nautical miles. Furthermore, the Jan
Mayen case substantially hinged around a very special

circumstance: that the fundamental resource in the area was the

capelin fisheries which the Court attempted to distribute in the

most equitable fashion. In the present case, there are no resources
of this nature pointing to anything like the need for this type of

solution. Finally, in spite of th ese special considerations Jan

Mayen was awarded only partial effects.

2. In Cameroon v. Nigeria, the issue of the ve ry large Bioko Island
was different; as the Court noted, “Bioko Island is subject to the

sovereignty of Equatorial Guinea, a State which is not a party to

the proceedings. Consequently th e effect of Bioko Island on the

seaward projection of the Cameroonian coastal front is an issue
between Cameroon and Equatori al Guinea and not between

Cameroon and Nigeria, and is not relevant to the issue of
199
delimitation before the Court” . That situation has nothing in

common with the present case wher e no third State’s island is
concerned and the “San Andrés Archipelago” clearly faces part –

but only part– of the coast of Nicaragua’s mainland relevant for

the delimitation requested of the Court.

199
Land and Maritime Boundary between Cameroon and Nigeria (Cameroon v.
Nigeria: Equatorial Guinea intervening), I.C.J. Reports 2002, p. 446, para. 299.

137 VII. Conclusions

5.27. From the above explanations, the following points are clear:

- Chapter III above leaves no doubt that physically and legally
the continental shelves of Nicaragua and Colombia meet and

overlap in an area roughly more than 300 nautical miles from

the Nicaraguan mainland coast and around 100 nautical miles

from the Colombian mainland coast.

- The islands and other maritime features claimed by Colombia

are located under 150 nautical miles from the Nicaraguan

mainland coast and over 300 nautical miles from the
Colombian coast.

- The islands and other maritime features claimed by Colombia
are located on the continenta l shelf of Nicaragua and

approximately 200 nautical miles distant from the area where

the continental shelf of Colombia terminates.

- If any of these features are found to be Colombian they are

under any definition located on the wrong side of the

delimitation line and wholly de tached geographically from
Colombia.

- The only way of obtaining an eq uitable delimitation in these

circumstances is to enclave these three small islands, San
Andrés, Providencia and its appendix, Santa Catalina, within a

12-nautical-mile radius. Any othe r even more minor features

138that might be attributed to Colombia as part of the island group
of San Andrés should, a fortiori, be enclaved within a more

restricted area.

139 CHAPTER VI

COLOMBIA’S DELIMITATION CLAIM

I. Introduction

6.1. Chapter III demonstrated that, in light of the applicable law and the
geography of the delimitation area, the present case concerns a

continental shelf delimitation invol ving the opposite mainland coasts

of Nicaragua and Colombia. Chapte r IV described the physical and

legal aspects of the maritime features located on the continental shelf
of Nicaragua, and Chapter V explai ned that in accordance with the

applicable law these small islands and other minor features should be

enclaved and not be given any wei ght in determining the continental
shelf boundaries between the mainland coasts.

6.2. Part III of the Colombian Counter-Memorial takes a totally different

approach which completely ignores the area where the Parties’
continental shelf entitlements overlap, and where a delimitation of the

continental shelf boundary is therefore required, and instead requests a

delimitation in an entirely separate location, which is located within

the area encompassed by Nicaragua ’s 200-nautical-mile exclusive
economic zone entitlement. Even w ithin this area appurtenant to

Nicaragua’s mainland coast, Colombia attempts to further limit the

maritime delimitation to the narrow band of maritime space located
between her claimed insular possessions and the Nicaraguan islands

fringing the mainland coast. In this manner, Colombia seeks to base a

maritime delimitation, within Nicaragua’s 200-nautical-mile exclusive

economic zone entitlement, entirel y on minor geographic features –
small islands, cays and rocks– without taking into account the

141 mainland coast of either Party, excluding entirely from the
delimitation process the dominant ge ographic feature in that area:

Nicaragua’s 450 kilometer mainland coast.

6.3. The purpose of this Chapter is not to offer an alternative position to

the delimitation claimed by Colombia in her Counter-Memorial since

Nicaragua’s request is limited to a continental shelf delimitation as is

explained in Chapter III above. Th e purpose of this Chapter is to
demonstrate that the approach of the Counter-Memorial to maritime

delimitation, even on its own terms, is fundamentally flawed. This

analysis will also demonstrate that even a delimitation of the maritime

areas restricted to the 200-nauti cal-mile exclusive economic zone of
Nicaragua and that would not encompass the total area of continental

shelf described in Chapter III, would also result in a delimitation that

would enclave the islands claimed by Colombia.

6.4. In this respect, three issues are of critical importance. First, as
indicated above, Colombia complete ly ignores the only area where a

maritime delimitation is truly required: the area where Nicaragua’s

and Colombia’s continental shelve s overlap. Colombia is wrong to
blithely dismiss the need for a delimitation in this area based on its

distance of more than 200 nautical miles from Nicaragua’s mainland

coast, because Nicaragua’s entitlement is not based on the distance

principle but on the natural prolonga tion of her land territory and the
principles of customary international law reflected in Article 76 of the

1982 Law of the Sea Convention relating to continental shelf

entitlements beyond 200 nautical miles. The Counter-Memorial
completely ignores the law as well as the geographical facts in this

regard.

1426.5. Second, the Counter-Memorial submits, contrary to both law and

common sense, that only the area between the islands fringing the
mainland coast of Nicaragua and the islands of San Andrés and

Providencia and other minor features claimed by Colombia is in need

of a maritime delimitation. By conf ining the delimitation area in this

manner, Colombia seeks to eras e Nicaragua’s 450 kilometre-long

mainland coast from the map. Deprived of its very existence,

Nicaragua’s mainland coast is th ereby prevented from generating
maritime entitlements not only to a c ontinental shelf extending to the

outer limit of the continental marg in, as provided in Article 76 but

also to a 200-nautical-mile exclus ive economic zone, as provided in

Article 57 of the 1982 Law of th e Sea Convention. Compounding her

peculiar contention that the pr incipal mainland coast should be
ignored, Colombia insists that the islands of San Andrés and

Providencia and the small cays on a number of isolated banks, and the

submerged bank of Quitasueño, form an archipelago that completely

blocks the seaward projection of Nicaragua’s maritime entitlement

which, according to Colombia, is only generated by a few fringing
200
islands and not the mainland coast. Unsurprisingly, Colombia fails
to present any credible argument why her small insular features,

which in her view form an archipelago, should block Nicaragua from
201
the maritime zones to the east of them.

6.6. From the figures which Colombia has included in the Counter-
Memorial, it is evident that Colombia’s “archipelago” consists mainly

200
201CCM, Vol. I, Chap. 2, pp.13-74.
Ibid, pp. 395-416, paras. 9.38-9.92.

143 202
of water and not coasts. Colombia fails to explain how these open

expanses of sea between isolated dots on the map, which Colombia
claims as her “archipelago”, can completely cut-off Nicaragua’s

maritime projection from her 450 kilometers mainland coast out to the

200-nautical-mile limit of her exclusive economic zone, and out to the

limit of her continental shelf at the outer edge of the continental
margin, which extends beyond 200 na utical miles from her mainland

coast.

6.7. The third fundamental flaw of the Counter-Memorial’s approach is its
submission that, even within this limited setting, the starting and

ending point of this delimitation ha s to be a provisional equidistance

line between the small insular features of Nicaragua and Colombia. As

will be demonstrated below, this is based on a mistaken reading of the

jurisprudence of the Court and arbi tral tribunals on the establishment
of a provisional delimitation line. In the first place, Colombia errs by

ignoring Nicaragua’s mainland coast in the construction of her

provisional equidistance line . By opposing San Andrés and

Providencia only against Nicaragua’s similarly small, fringing islands
– instead of her long mainland coast – Colombia enables herself to

argue for a seemingly equal treatment of her and Nicaragua’s

geographical features. Colombia th en compounds the error by giving

full weight in the construction of th e provisional equidistance line not
only to San Andrés and Providencia, but also to the even more minor

features that she uses to develop the direction of the line. As will be

demonstrated below in Section V, the Court’s jurisprudence indicates

that when appropriate to establis h a provisional delimitation line,

small islands and uninhabited cays a nd rocks do not receive the same

20See e.g. CCM, Vol. III Maps, pp. 25-39, 45-57, Figures 2.13-2.20, 2.23-2.29.

144 treatment as mainland coasts, and ar e generally ignored or at most

given very little weight in the c onstruction of the provisional line. As
demonstrated in Chapter V, and as further discussed in Section VI of

this chapter, enclaving all of Colombia’s islands lying on Nicaragua’s

continental margin is the most equitable solution in the present case.

6.8. It should also be noted that much of the maritime area falling on the

Colombian side of her putative equidistance line actually lies west of

the 82° meridian that, at least until no w, Colombia herself has always

(wrongly) claimed constitutes her maritime boundary with Nicaragua

and, even as of this writing, Colomb ia still maintains as the boundary
by force and the threat of force. 203 In other words, with her newly

fashioned “median line”, Colombia seeks to acquire more maritime

space than she has ever claimed before, including in her earlier

pleadings before this Court. As will be discussed in Chapter VII,
there is no legal or equitable basis for Colombia’s new position.

II. The Island of San Andrés and other Minor Insular Features do

not Block the Maritime Projection of Nicaragua’s Coast

6.9. The small and far apart features that Colombia wants to turn into an
extensive archipelago do not form a single unit blocking Nicaragua’s

entitlement to an exclusive economic zone up to 200 nautical miles

from her mainland coast or a c ontinental shelf extending beyond 200

nautical miles. This is clearly visible from the figures Colombia has
herself included in the Counter-Memorial. Figure 9.2 from the

Counter-Memorial shows that there simply is no coastal front to speak

203See NR, Vol. II, Annexes: 7, 8, 9 and 11. See above Intro. pp. 7, 16 and 18-19,
paras. 18, 35 and 41-42.

145 of opposite the Nicaraguan mainland co ast in the area of Colombia’s

claimed maritime features. Figure 6-1 of this Reply shows the frontal
projection of Nicaragua up to th e outer limits of her exclusive

economic zone and indicates the act ual coastal front of the maritime

features concerned. Figure 6-1 doe s not include any feature on the

bank of Quitasueño since, as demonstrated above in Chapter IV, there
is no coastline on any part of th at submerged bank. Figure 6-1 shows

that the frontal projection of the maritime zones of Nicaragua

extending from her coast is, except for some minute sectors, not

interrupted by the coastal front Colombia presents in her Counter-
Memorial before this projection reaches the outer limits of

Nicaragua’s exclusive economic zone.

6.10. The Counter-Memorial denies that the delimitation area includes any
204
area to the east of San Andrés and Providencia . Colombia denies
that Nicaragua’s exclusive economic zone extends up to the 200

nautical miles recognized by International Law. Instead, Colombia

maintains that only the area between Nicaragua’s coastal islands and

the features of her “archipelago” are relevant. The effect of this
argument is to allow the so-calle d “archipelago” to serve as an

impenetrable wall blocking the se award projection of Nicaragua’s

mainland coastline to some 100 nau tical miles offshore, and denying

Nicaragua any entitlements east of the Colombian “wall”. However,
the jurisprudence Colomb ia invokes is in evid ent contradiction with

this conclusion. Paragraph 7.25 of the Counter-Memorial is worth

quoting in full:

20CCM, Vol. I, pp. 339-379, paras. 8.1-8.94.

146 “With respect to the area within which the
delimitation is to be car ried out by the Court –
sometimes referred to as the “relevant area” or,
in Nicaragua’s case, the “delimitation area” – it
is axiomatic that that area is defined by

reference to the relevant coasts of the Parties.
For a coast of a party to be a “relevant coast”,
however, it must be capable of generating
maritime rights that overlap with the rights
generated by the coast of the other party. As

the Court observed in the Tunisia-Libya case –
a case which Nicaragua curiously asserts “is
the most similar in geographical terms” to the
present case:
ʻNonetheless, for the purpose of shelf
delimitation between the Parties, it is not the

whole of the coast of e ach Party which can be
taken into account; the submarine extension of
any part of the coast of one Party which,
because of its geogra phic situation, cannot
overlap with the extensi on of the coast of the

other, is to be ex clude205rom further
consideration by the Courtʼ” .

6.11. As the italicized part of paragraph 7.25 of the Counter-Memorial, as

well as the quotation from the Judgment in the Tunisia/Libya case

show, the delimitation area is define d by reference to the area of
overlapping maritime entitlements. In the present case, this area is

defined by the overlapping continental shelf entitlements of Nicaragua

and Colombia generated by the natural prolongation of their

respective mainland coasts, as is cl early explained and documented in
Chapter III above.

6.12. In Colombia’s scenario presently dealt with, which ignores the two

mainland coasts and the overlapping entitlements that they generate,

the only area to be delimited is a narrow band of sea lying between her

205CCM, Vol. I, pp. 322-323, para. 7.25. Footnotes omitted; emphasis provided.

147claimed island possessions and those of Nicaragua. However, the
only thing Colombia achieves with this contrived shrinkage of the

delimitation area is to highlight the inequity of the maritime

delimitation she is requesting the Court to effect. It should be
undisputed that, by virtue of th e 1982 Law of the Sea Convention,

Nicaragua enjoys an entitlement to an exclusive economic zone

extending to the 200-nautical-mile limit measured from the relevant

basepoints along her mainland coast (i ncluding her fri nging islands).
Yet Colombia disputes this by reques ting that the Court ignore all but

the first 100 nautical miles from th e coast of Nicaragua (that is, only

the half of Nicaragua’s 200-naut ical-mile exclusive economic zone

entitlement lying west of Colombia’s impenetrable “wall”), which half
Colombia would then divide “evenly” between the Parties. Colombia

seeks to convince the Court to auto matically attribute the remaining

100 nautical miles of sea to Colombia, on the sole ground that they lie
beyond the “wall” of small islands claimed by Colombia. That

solution would be grossly inequitable even in a situation where the

relevant coasts of the parties were similar in length. In the present

case, no such similarity exists. In stead, the Court is faced with the
most glaring disproportion ever be tween the coasts of the Parties

before it. Nicaragua’s mainland coast facing the delimitation area

measures 450 kilometers while the combined coastal length of the
features which Colombia claims as her own facing Nicaragua’s coast

amounts to some 22 kilometers. This results in a ratio of more than

20:1 in Nicaragua’s favour between her coasts and Colombia’s. Yet,

Colombia’s methodology would distri bute the 200 nau tical miles of
sea adjacent to Nicaragua’s mainland coast (all of which is more than

200 nautical miles from Colombia’s mainland coast) in a proportion of

3:1 in Colombia’s favor. An equitable solution it is not. Far from it.

1486.13. There are many examples in the jurisprudence of the Court and

arbitral tribunals which illustrate that small insular features, such as
San Andrés and Providencia, do not block the maritime projection of a

larger coastal front. For instance, in the Libya/Malta case the Court, in

contemplating what constituted an equitable solution between the

parties before it, took into account the coast of the Italian island of

Sicily and the fact that the continen tal shelf entitlements of Sicily and
206
Libya overlapped to the south of Malta . This finding of the Court
implies that the entitlement of Sicily, which lies to the north of Malta,

is not blocked by the coast of Malta, but extends beyond Malta. If the

proposition of Colombia’s Counter-Memorial were valid, the Court

could never have made this finding as there would only have been

overlapping entitlements of Sicily and Malta to the north of Malta and
no overlapping continental shelf entitlement of Sicily and Libya.

6.14. The treatment of the Channel Islands in the Anglo-French arbitration

provides another example where the jurisprudence holds that islands

do not block the frontal projectio n of a longer opposite mainland

coast. The Counter-Memorial suggests that the treatment of the
Channel Islands in the Anglo-French arbitration does not have any

relevance for enclaving San Andrés and Providencia. 207 This question

has been considered in Chapte r V above and, thus, for present

purposes the following observations suffice. In the Anglo-French

arbitration, the Court of Arbitration established two continental shelf
boundaries. In this regard the Court of Arbitration observed:

206
Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.J.Reports
2075 pp. 51-53, paras. 71-73.
CCM, Vol. I, pp. 330-333, paras. 7.42-7.48.

149 “In the actual circumstances of the Channel
Islands region, where the extent of the
continental shelf is comparatively modest and
the scope for adjusting the equities
correspondingly small, the Court considers that

the situation demands a twofold solution. First,
in order to maintain the appropriate balance
between the two States in relation to the
continental shelf as ri parian States of the
Channel with approximately equal coastlines,

the Court decides that the primary boundary
between them shall be a median line, linking
Point D of the agreed eastern segment to Point
E of the western agreed segment. In the light of
the Court’s previous d ecisions regarding the
course of the boundary in the English Channel,

this means that throughout the whole length of
the Channel comprised within the arbitration
area the primary boundary of the continental
shelf will be a mid-Channel median line. In
delimiting its course in the Channel Islands

region, that is between Points D and E, the
Channel Islands themselves are to be
disregarded, since their continental shelf must
be the subject of a second and separate
delimitation.”208

6.15. If the Court of Arbitration had taken into account the proposition of

Colombia’s Counter-Memorial that islands block the frontal coastal
projection of mainland coast, it could not have effected the

delimitation it actually did. If Colombia’s interpretation of the law

were valid, France would have been excluded from a significant part

of the English Channel. The Court of Arbitration held to the contrary,
and established a median line between France and the southern coast

of England in an area to the north of (and beyond) the Channel

208Case concerning the Delimitation of Continental Shelf between the United
Kingdom of Great Britain and Northern Ireland, and the French Republic, Decision
of 20 June 1977. RIAA, Vol. XVIII, UN, pp. 94-95, para. 201.

150 Islands. This is illustrated by Figu re 6-2, which indicates the location
of the mid-Channel median lin e established by the Court of

Arbitration. Figure 6-2 also shows the effects of Colombia’s position

on coastal projections. Under that vi ew, the frontal projection of the
French mainland is blocked by the Channel Islands and their 12-

nautical-mile zone. France’s coasta l projection would not reach up to

the middle of the English Channel. As the location of the continental

shelf boundary in that area shows, the Court of Arbitration considered,
contrary to Colombia’s claims, that the seaward projection of the

French mainland coast extends bey ond the Channel Islands and their

12-nautical-mile zone up to the middle of the Channel.

6.16. For the present proceedings, it is of interest that the Court of

Arbitration in the Anglo-French arbitration also looked at the

situation of the French islands of Saint Pierre and Miquelon, which are
near the coast of Canada’s Ne wfoundland. In paragraph 200 of its

Award of 30 June 1977 the Court of Arbitration observed:

“The case of St. Pierre et Miquelon, although it
clearly presents some analogies with the
present case, also differs from it in important
respects. First, that case is not one of islands
situated in a channel between the coasts of
opposite States, so that no question arises there
of a delimitation between States, whose

coastlines are in an approximately equal
relation to the continental shelf to be delimited.
Secondly, there being nothing to the east of St.
Pierre et Miquelon except the open waters of
the Atlantic Ocean, there is more scope for

151 redressing inequities than in the narrow waters
of the English Channel.” 209

6.17. The Court of Arbitration’s observati on in respect of the “open waters

of the Atlantic Ocean” is of course directly relevant in this setting,
where the mainland coast of Colombia (like that of France in the

arbitration with Canada) plays no role, and where beyond Colombia’s

small islands (like St. Pierre an d Miquelon) there would be nothing

but the open waters of the Caribbean Sea up to the outer limit of

Nicaragua’s maritime zones.

6.18. The view of the Court of Arbitration in the Anglo-French arbitration

on the seaward projection of Canada’s coast beyond the islands of

Saint Pierre and Miquelon (inst ead of being blocked by their

impenetrable “wall”) is consistent with that of the Court of

Arbitration, which handed down its award in the Delimitation of

Maritime Areas between Canada and France on 10 June 1992.

6.19. The Court of Arbitration in that case took as a starting point that:

“The delimitation process begins, as a rule, by
identifying what the International Court of

Justice has called ‘the geographical context of
the dispute before the Court, that is to say the
general area in which ʼ the ‘delimitation which
is the subject of the proceedings, has to be
effectedʼ” [Plateau continental (Tunisie/Libye),
210
C.I.J. Recueil 1982, p. 34, par. 17]”.

209Emphasis provided. Case concerning the Delimitation of Continental Shelf
between the United Kingdom of Great Britain and Northern Ireland, and the French
Republic, Decision of 20 June 1977. RIAA, Vol. XVIII, UN, p. 94, para. 200.
210Case concerning Delimitation of Maritime Areas between Canada and the
French Republic (St. Pierre and Miquelon) (1992), ILR, Vol. 95, p. 660, para. 25.

152 211
6.20. In identifying the relevant area for the delimitation it was to effect,

the Court of Arbitration then observed:

“But the coastlines that France wants to

exclude form the concavity of the Gulf
approaches and all of them face the area where
the delimitation is required, generating
projections that meet and overlap, either
laterally or in opposition.” 212

6.21. This finding contradicts Colombia’s position on the implications of
the applicable law for the present proceedings. Colombia submits that

there is only a situation of oppositene ss between the relevant coast of

Nicaragua and Colombia’s “archipelago”. However, paragraph 30 of

the Award of the Court of Arbitration in the Delimitation of maritime

areas between Canada and France confirms that in a case such as
between France and Canada, which in this regard is geographically

similar, within the settings of this chapter, to the case between

Nicaragua and Colombia, the area of delimitation is not only formed

by the maritime area between the two coasts, but that it also extends

beyond the small islands concerned.

6.22. The delimitation lin e adopted in the Delimitation of Maritime Areas

between Canada and France illustrates the practical effects of the

Court of Arbitration’s finding in respect of the relevant area for the

delimitation. In effecting the delimitation in the area seaward of Saint

Pierre and Miquelon, the Court of Arbitration observed:

211
Case concerning Delimitation of Maritime Areas between Canada and the
French Republic (St. Pierre and Miquelon) (1992), ILR, Vol. 95, pp. 660-662, paras.
21235.
Ibid, p. 661, para. 29, (emphasis provided).

153“70. In the second sector, towards the south
and the southeast the ge ographical situation is
completely different. The French islands have a
coastal opening towards the south which is
unobstructed by any opposite or laterally
aligned Canadian coast. Having such a coastal
opening, France is fully entitled to a frontal

seaward projection towards the south until it
reaches the outer limit of 200 nautical miles, as
far as any other segment of the adjacent
southern coast of Newf oundland. There is no
foundation for claiming th at St Pierre and
Miquelon frontal projection in this area should
end at the 12 mile limit of the territorial sea.

On the other hand, such a seaward projection
must not be allowed to encroach upon or cut
off a parallel frontal projection of the adjacent
segments of the Newfoundland southern coast.

71. In order to achieve this result the projection

towards the south must be measured by the
breadth of the coastal opening of the French
islands toward the sout h. Thus, a balanced
application of the principles and criteria
invoked by the Parties leads to the solution of a
second maritime area for St Pierre and
Miquelon, in the southern sector extending to a

distance of 188 nautical miles from a 12
nautical miles limit measured fro the baselines
already described, with its axis extending due
south along the meridian half way between the
two meridians described below, its eastern and
western limits being formed by lines parallel to
that axis and its width being determined by the

distance between the meridians passing
through the easternmost point of the island of
St Pierre and the westernmost point of
Miquelon respectively and measured at the
mean latitude of those two points, or
approximately 10.5 nautical miles. From the
northeastern point of the limit thus described,

as far as point 1 re ferred to in the 1972
Agreement, the delimitation shall be a twelve

154 nautical miles limit measured from the nearest
points on the baseline of the French islands” 213.

6.23. Figure 6-3 depicts the delimita tion effected by the Court of

Arbitration. In accordance with the observations contained in

paragraphs 70 and 71 of the Court’s Award, the French maritime

zones extend southward to the 200-nautical-mile limit through a
corridor which has the same breadth as the southward coastal

projection of the islands. The deli mitation effected by the Court of

Arbitration belies the s uggestion contained in the Counter-
214
Memorial that the 12-nautical-mile territorial sea of Colombia’s

“archipelago” blocks the frontal projection of Nicaragua. As was

observed previously, that same approach was applied in the Anglo-
French arbitration in respect of the French continental shelf in the

region to the north of the Channel Is lands. To the east of Saint Pierre

and Miquelon, the Canadian continental shelf and exclusive economic

zone “wrap around” the territorial s ea of the islands and to the west

around the territorial sea and some additional maritime area. Figure 6-
4 shows the French continental shelf surrounded by that of Canada.

6.24. In sum, there is no support in th e jurisprudence of the Court and

arbitral tribunals for Colombia’s proposition that her small islands and

cays serve as a kind of defensive wall blocking the seaward projection

of Nicaragua’s mainland coast, and limiting the delimitation area to
the area between Nicaragua’s coast and the islands of San Andrés and

Providencia. To the contrary, the jurisprudence shows that

Nicaragua’s maritime entitlements are not cut off by Colombia’s

213
Case concerning Delimitation of Maritime Areas between Canada and the
French Republic (St. Pierre and Miquelon) (1992), ILR, Vol. 95. pp. 671-672, paras.
21471.
CCM, Vol. I, p. 393, Figure 9.2.

155 minor insular features, but extend be yond them to the full extent of

Nicaragua’s 200-nautical-mile excl usive economic zone and even

longer continental shelf.

III. The Relevant Coasts and Relevant Area for the Delimitation

under Colombia’s Scenario

A. T HE R ELEVANT C OASTS

6.25. It is, of course, axiomatic that th e land dominates the sea, and does so

through the projection seaward of the coast 215. “[T]he land is the legal

source of the power which a Stat e may exercise over territorial

extensions to seaward” 216. Accordingly, it is essential to determine the

“relevant coasts” before turning to the task of analyzing the

delimitation proposed by Colombia. As the Court recently put it in the

Black Sea case:

“It is therefore important to determine the
coasts of [the parties] which generate the rights
of these countries to the continental shelf and

the exclusive economic zone, namely, those
coasts the projections of which overlap,
because the task of delimitation consists in
resolving the overlapping claims by drawing a

line of sepa217ion of the maritime areas
concerned.”

21Case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine),
Judgment, I.C.J. Judgment of 3 February 2009, p. 26, para. 77.
216
North Sea Continental ShelCases ( Federal Republic of Germany/Denmark;
Federal Republic of Germany/ Netherlands), Judgment, I.C.J. Reports 1969 , p. 51,
217a. 96.
Case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine),
Judgment of 3 February 2009, p. 26, para. 77.

1566.26. In theory at least, Colombia acknow ledges that the relevant coasts are

“those coasts the projections of which overlap”. 218At paragraph 8.4 of

the Counter-Memorial, for example, Colombia states: “The relevant

coasts of the parties to a delimita tion dispute are those coasts whose

projections seaward generate entitlements to maritime areas that meet
and overlap” 219 Exactly the same point is repeated in the next

paragraph where Colombia again stat es: “[T]he relevant coasts are

those coasts which do give rise to overlapping legal entitlements.” 220

Notwithstanding her nominal ag reement, however, Colombia

promptly forsakes these principles when it comes time to apply them

in the circumstances of this case.

6.27. As explained above, Colombia comple tely ignores the fact that the
Parties’ mainland coasts genera te overlapping continental shelf

entitlements. That they do so renders both of them “relevant coasts.”

Yet Colombia treats neither of them as relevant to the delimitation in

this case. In fact, as Nicaragua has shown, the only area in this case

that requires a delimitation is wher e the Parties’ continental shelf

entitlements overlap, so the only rele vant coasts are the two mainland

coasts.

6.28. Colombia entirely avoids this area of overlapping entitlements as well

as the coasts that are relevant to them, choosing to focus instead only

on the narrow band of sea to the we st of her putative “archipelago.”

By so limiting the area of focus, Colombia argues in the first instance

that her relevant coast c onsists of the coasts of all of her claimed

218Case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine),
Judgment of 3 February 2009, p. 26, para. 77.
219CCM, Vol. I, p. 340, para. 8.4.
220Ibid, p. 341, para. 8.5.

157 insular features, including each a nd every one of the minor cays and

rocks, which should be aggregated together for purposes of defining
221
her relevant coast. At the same time, she applies a different standard
for Nicaragua. She entirely ignores the single most dominant

geographic feature in this scenari o, Nicaragua’s mainland coast, and

adopts the extraordinary view that Ni caragua’s relevant coast consists

only of the Corn Islands and misce llaneous rocks and cays, including
222
the Miskito Cays.

6.29. Colombia’s purpose in including eac h and every one of her claimed

incidental maritime features in the calculation of her own relevant

coast is obvious. She seeks to inflate the otherwise miniscule extent of

her own relevant coast, and ther eby minimize the disparity between

the lengths of the Parties’ relevant coasts. As discussed in Chapter IV
of this Reply, however, the truth is that none of the Cays of Bajo

Nuevo, Serranilla, Serrana, Roncador, the East-Southeast or

Albuquerque is capable of supporti ng human habitation or having an

economic life of its own. Under Article 121(3) of the 1982 Law of the

Sea Convention, they must therefore be qualified as rocks that can

generate no continental shelf or ex clusive economic zone entitlement.
For its part, Quitasueño, being entirely submerged at high tide, does

not even merit the label of a rock. That being the case, none of the

features mentioned has a potential coastal projection beyond a

territorial sea that can overlap with Nicaragua’s coastal projection, and

so cannot, even under Colombia’s own definition and setting,
constitute part of Colombia’s relevant coast for a delimitation between

the Parties.

221
222See CCM, Vol. I, pp. 341-343, and pp. 344-350, paras. 8.7 and 8.12-8.8.28.
Ibid, Vol. I, p. 351, paras. 8.30-8.32.

1586.30. It is only the islands of San Andr és and Providencia/Santa Catalina
that can be said to constitute islands capable of generating an

exclusive economic zone entitleme nt under Article 121 of the 1982

Law of the Sea Convention. Accordingly, only these features can

constitute Colombia’s relevant coast for these purposes. Measured as
coastal façades in the north-south direction (the direction in which

they face Nicaragua which is also their longest extent) the length of

San Andrés is 13 kilometers and the length of Providencia is 8

kilometers. They total 21 kilometers.

6.31. On the other side of the equation, Colombia nowhere even bothers to

rationalize her complete exclusion of Nicaragua’s entire mainland

coast from her depiction of Nicar agua’s relevant coast. Without

explanation, Colombia says merely th at it is only to the west of San
Andrés and Providencia/Santa Catalina that her maritime entitlements

“meet and overlap with th e entitlements generated by Nicaragua’s
223
offshore islands ”. This claim is not correct even if the relevant

coasts were limited to those gene rated by these “offshore islands” of
Nicaragua since these would have just as much rights as “Colombia’s

islands” to a full 200 exclusive economic zone. But more importantly,

this does not explain why Colomb ia considers it appropriate to

disregard the existence of the Ni caraguan mainland. It is in fact
entirely inappropriate to do so. Wh en Nicaragua’s mainland coast is

taken into account, as must be the case, it is readily apparent that there

is, in fact, substantial overlap between the Parties’ 200-nautical-mile

zones both to the west and east of Colombia’s islands.

22CCM, Vol. I, p. 343 para. 8.9, (emphasis added).

1596.32. The reason Colombia tries to di minish the length of Nicaragua’s

relevant coast by substituting it with that of minor features is precisely

the same reason she seeks to exaggerate her own: to minimize the

glaring disparity in the lengths of the Parties’ relevant coasts. Yet,
under any serious view, even in the setting proposed by Colombia, the

Nicaraguan mainland coast is the do minant geographic reality in the

region. Accordingly, there is no possible justification for excluding it

from the “relevant coasts” for the purposes of this case.

6.33. Nicaragua agrees with Colombia’s statement of principle: the relevant
coasts “are those coasts whose projections seaward generate

entitlements to maritime areas that meet and overlap.” 224For the

reasons discussed, however, she disagrees with the manner in which

Colombia has identified those coasts. Within the area encompassed by

Nicaragua’s 200-nautical-mile excl usive economic zone entitlement,

the only coasts that even potentially generate overlapping entitlements

are:

• For Nicaragua: the entire coas tal front of the Caribbean
225
mainland, measuring a total of 450 kilometers ; and
• For Colombia: the coastal fronts of the individual islands of
San Andrés and Providencia, measuring a total of 21
kilometers.

6.34. The ratio of Nicaragua’s mainland co astal front and the coastal fronts

of the islands of San Andrés and Providencia is more than 20:1 in
Nicaragua’s favor.

224CCM, Vol. I, p. 340, para. 8.4.
225The coastal fronts of the Corn Islands and Cayo Miskito (Mayor) (the largest
single feature of the Miskito Cays measuring over 21 km ) since by themselves they
are entirely similar to San Andrésand Providencia could also be ˗but are not ˗
included in this figure because their comparative size pales in relation to
Nicaragua’s mainland coast.

160 B.T HE R ELEVANT A REA

6.35. In addition to the relevant coasts, it is necessary also to define the
relevant area in which the delimitation is effected 226.

6.36. As stated, Nicaragua and Colombia agree ˗in theory at least ˗ that the

relevant coasts are “those coasts the projections of which overlap” 227.

Conversely, the “relevant area” must be that area where the Parties’

coastal projections meet and overlap. Here too, there is no
228
disagreement as to basic principles .

6.37. To determine the area of overlapping projections with accuracy, it is

thus necessary to define and draw (a) each Party’s coastal projection,

and (b) the area(s) where these coas tal projections overlap. Colombia

nowhere bothers to undertake the requisite analysis, however. Instead,
the Counter-Memorial proceeds straight to its predetermined

conclusion:

“It is only to the west of the San Andrés
Archipelago that the maritime entitlements of
the Archipelago meet and overlap with the
entitlements generated by Nicaragua’s offshore
229
islands and cays.”

6.38. On this ostensible basis, Colombia claims that,

“broadly speaking the relevant area comprises
the area lying between the Colombian San

226
Case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine),
227gment of 3 February 2009, p. 36, paras. 110-111.
228Ibid, p. 26, para. 77.
229See CCM, Vol. I, pp. 340-341, paras. 8.4 and 8.5.
CCM, Vol. I, p. 343, para. 8.9.

161 Andrés Archipelago on the east, and the230
Nicaraguan islands and cays on the west” .

6.39. The reason Colombia attempts to lim it the relevant area to the narrow

band of sea lying between her claimed insular possessions and

Nicaragua’s off-shore islands an d cays is as obvious as it is
unsupportable. By limiting the extent of the relevant area to the

maritime space lying west of her insular possessions, Colombia hopes

to mask the inequity of the medi an line she proffers as the boundary

between the two States. But Colombia ’s conclusory assertion that “it
is only to the west” of San Andrés and Providencia/Santa Catalina that

the Parties’ potential maritime entitlements meet and overlap is

plainly false. In fact, within the area encompassed by Nicaragua’s

200-nautical-mile exclusive economi c zone entitlement, there are

areas of overlap both to the west of “Nicaragua’s offshore islands and
cays” and, more significantly, to the east of San Andrés and

Providencia/Santa Catalina. Fidel ity to Colombia’s own definition

requires that all of these areas of overlap be included as part of the

“relevant area” in this setting.

6.40. As noted, to properly identify the area of overlapping projections, it is

necessary to do the work Colombia eschews; that is, to define and

draw (a) the Parties’ coastal projections, and (b) the areas where those
projections overlap. It is to those tasks that Nicaragua now turns.

6.41. The Parties’ “coastal projections” ar e most usefully determined by

reference to their areas of poten tial legal entitlement. In the Jan

Mayen case, for example, the Court determined what it called the

230CCM, Vol. I, p. 344, para. 8.11.

162 “area relevant to the delimitation di spute” by reference to the “area of

overlapping potential entitlements” 23.

6.42. Here once more, the Parties appear to be in substantial agreement

about the applicable principles, even if in practice Colombia refrains

from applying them. At paragraph 8.4 of the Counter-Memorial, for

instance, Colombia expressly ack nowledges that the relevant area
corresponds to the area of overl apping potential en titlements. She

states:

“It is only where the legal entitlements

generated by one State’s coasts meet and
overlap with the legal entitlements of a
neighbouring State that such area of overlap
falls to be delimited.” 232

6.43. In fact, the same point is made repeatedly throughout the Counter-

Memorial. Citing Tunisia-Libya at paragraph 8.4, for instance,

Colombia similarly observes that the relevant coasts “are those coasts

whose projections seaward generate entitlements that meet and
overlap.” 233

6.44. Accordingly, there is no meaningf ul dispute between the Parties on

this point of principle. The task then is to define the extent of each

Party’s area of potential entitlement and identify where they overlap.

231
Case concerning Maritime Delimitation in the Area Between Greenland and Jan
Mayen (Denmark v. Norway), Judgment, I.C.J. Reports 1993, pp. 47-48, paras. 18-
232
233CCM,Vol. I, p. 329, para. 7.39 (emphasis added).
Ibid, p. 340, para. 8.4, (emphasis added). See also ibid, Vol. I, p. 341, para. 8.5:
“[T]he ‘relevant coast’ are those coasts which do give rise to overlapping legal
entitlements”; and CCM, Vol. I, p. 322, para. 7.25: “For a coast of a party to be a
‘relevant coast’, however, it must be capable of generating maritime rights that
overlap with the rights generated by the coasts of the other party.”

1636.45. Even if this case were to involve only an exclusive economic zone
delimitation, as sought by Colombia, and not the continental shelf

delimitation Nicaragua is reques ting, the scope of Nicaragua’s 200-

nautical-mile zone is easily defined. It constitutes the area embraced
within 200 nautical miles of the baselines used for measuring the

breadth of Nicaragua’s territorial sea. This area is depicted in Figure

6-5.

6.46. The same exercise can be applied to determine the extent of any

theoretical or potential 200-nautical-mile zone of the islands of San

Andrés and Providencia as isla nds under Article 121(1) of the 1982

Law of the Sea Convention within the International limits recognized
by Colombia. This area is depicted in Figure 6-6.

6.47. The area of overlapping potential entitlements, which results from
superimposing Figures 6-5 and 6-6 on top of one another, is shown in

Figure 6-7. This would be, by Colombia’s own definition, the relevant

area for any delimitation of maritime entitlements generated by

Nicaragua’s mainland coast on the one hand, and Colombia’s islands
and disputed cays appurtenant to that coast, on the other. The contrast

between this properly-drawn releva nt area and that presented by

Colombia is stark. By attempting to limit the Court’s vision to the
band of sea lying between approxim ately 25 nautical miles (the

location of the Miskito Cays and th e Corn Islands) and 110 nautical

miles (the location of San Andrés) from Nicaragua’s mainland coast,

Colombia hopes she can persuade th e Court to ignore more than 50%
of the true area of overlapping enti tlements. As Figure 6-7 shows, the

truth is that there are substantia l areas of overlapping potential

exclusive economic zone entitlements to the east of San Andrés and

164 Providencia. The portions of the re levant area Colombia none too
subtly seeks to ignore are depicted on Figure 6-8.

6.48. Colombia’s forced geographical myopi a is inconsistent with logic,
with the law and, as noted, with Colombia’s own argument. Fidelity to

the law and to the geographical realities requires that the entire area of

overlap be taken into account for any delimitation between

Nicaragua’s mainland coast and Colombia’s islands and cays lying
offshore.

IV. Colombia’s Placement, Construction and Use of Her

Provisional Equidistance Line are Erroneous in her own Scenario

6.49. A major point of disagreement between the Parties involves

Colombia’s placement, construction and use of a provisional

equidistance line in her purpo rted delimitation of the area

encompassed by Nicaragua’s 200-nautical-mile exclusive economic
zone entitlement. 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 prolo ngation of the land territory, the
question of a provisional equidistan ce line has no role to play. The

analysis of this question in this section is addressed to the partial

delimitation scenario posited by Colombia involving an exclusive
economic zone delimitation in whic h the distance principle is an

element to be considered.

6.50. The first serious flaw in Colombia’s approach concerns the placement
of the line. As previously discussed, Colombia’s delimitation

methodology ignores both mainland coasts ˗her own and Nicaragua’s˗

165 even though the latter is by far the predominant geographic feature

with regard to the area the Colombia seeks to have delimited.
Colombia arbitrarily decided to place a median line between her

claimed insular possessions and thos e of Nicaragua, as if neither her

own nor Nicaragua’s extensive main land coasts existed. As can be

noted from a review of Sec tion B of Chapter 9 of the Counter-

Memorial, which is concerned with the applicable principles and rules
of international law, Colombia pays some attention to the procedure

that the jurisprudence has applied to effect a delimitation that will

result in an equitable solution. 234However, the Counter-Memorial

passes in silence on the reasoning the Court and arbitral tribunals have

applied to select the equidistance line as the provisional starting point
for maritime delimitations. Instead, the Counter-Memorial limits itself

to noting that the jurisprudence in general has concluded that the

equidistance line forms an appr opriate starting point for the
235
delimitation of maritime zones between States with opposite coasts.

6.51. Colombia’s second serious flaw con cerns the construction and use of

her arbitrarily-placed median line. In constructing this line Colombia

has chosen to give no weight to Nicaragua’s 450 kilometre-long

mainland coast, and to give full weight to her small islands and cays.

Colombia is wrong on both counts. It is indefensible for Colombia to
ignore Nicaragua’s mainland coas t in the construction of the

provisional delimitation lin e. And it is equally indefensible to give

weight to small islands and uninhabited cays in the construction of the

line. The Court’s jurisprudence is entirely to the c ontrary as shown

below.

234
235CCM, Vol. I, Sec. B, pp. 382-386, paras. 9.6-9.13.
Ibid, pp. 382-386, paras. 9.9-9.13.

1666.52. Finally. Colombia’s use of her ill-p laced and ill-constructed ‘median
line’ as the final line of delimitation is also in conflict with the Court’s

jurisprudence, because it is grossl y inequitable and fails to take

account of the most significant ge ographic factors, namely: (i)

Nicaragua’s 450 kilometer main land coast; (ii) Nicaragua’s
entitlements, based on the seaward projection of her coast, to the

maritime areas to the east of Colombia’s insular possessions; and (iii)

the small and insignificant nature of those insular possessions, as well

as their location adjacent to Nicar agua, on the Nicaraguan continental
shelf, and more than 300 nautical miles from the Colombian mainland.

6.53. As regards the applicable law and th e role of the equidistance method

in the delimitation process, the first paragraph of Section B of Chapter

9 of the Counter-Memorial immediately sets the tone in this respect.
That paragraph observes that:

“While the law of maritime delimitation has
undergone a certain evolution over recent
years, one principle that has remained a
constant is that, in situations involving

delimitation between opposite coasts, an
equidistance or median line boundary will
normally produce an equal division of the
parties’ overlapping entitlements and an
equitable result”236.

This is, of course, a wholly inappr opriate use of the term “principle”

in the context of a discussion of the applicable principles and rules of

international law. To be fair, Co lombia admits that between opposite

coasts an equidistance or median line will normally produce an equal

236CCM, Vol. I, pp. 382-383, para. 9.6 (emphasis provided)

167 division of the parties’ overlapping entitlements. Of course, that is not
the case in the present situation. Rather than confirming the

appropriateness of the equidistan ce method, Colombia’s submission

that the equidistance line normally produces an equal division
indicates that the delimitation involv ing Nicaragua and the islands of

San Andrés and Providencia is not a standard case of opposite coasts.

6.54. In the Counter-Memorial’s rendering of the maritime delimitation,
only a fraction of Nicaragua 200-nau tical-mile zone is taken into

consideration. However, it is evident that this 200-nautical-mile zone

extends to the east of the islands of San Andrés and Providencia up to

the outer limit of Nicaragua’s 200 -nautical-mile zone. Colombia’s
supposedly “equal” division of th e area of overlapping entitlements

only attributes approximately 25% of that area to Nicaragua and the

remaining 75% to those islands. Clearly, the equidistance method
applied by Colombia does not have the merits it normally has in

situations involving opposite coasts.

6.55. Before analyzing the jurisprudence on this question, it is useful to look
at it from the perspective of norma l legal common sense. It is logical

that, in the case of a delimitation of an area lying mainly between two

similar coasts, a provisional equidistance line could serve as a starting
point for the delimitation. In the present case, however, less than 50%

of the area of delimitation lies be tween the two “coasts” arbitrarily

selected by Colombia in this scenario. In these circumstances, any

provisional equidistance line would completely ignore the other 50%
of the area to the benefit of Co lombia. The use of a provisional

equidistance line is not a principle of maritime delimitation but simply

a method used in the appropriate ci rcumstances. The real principle of

168 maritime delimitation is that any method used to effectuate such a

delimitation should lead to an equitable solution.

6.56. Contrary to what is suggested by the Counter-Memorial’s superficial

rendering of the applicable law, the jurisprudence of the Court and

arbitral tribunals does show an acute awareness that the equidistance
line is not a panacea either at the stage of identifying a provisional

starting point or at the second stage of the delimitation process in

which the equitableness of that pr ovisional starting point has to be

assessed against the relevant circum stances of the case at hand. Thus,
the selection of a provi sional delimitation line does not imply that it

must be a provisional equidistance line.

6.57. In normal circumstances, the first s tage of the delimitation process

˗the selection of a prov isional delimitation line˗ perhaps is even more
critical to the outcome of a delimitation than the second stage in which

the provisional line is checked against the relevant circumstances to

establish if that provisional line needs to be adjusted to arrive at the

final boundary. The provisional line pr ovides, so to speak, a yardstick
against which to measure the releva nt circumstances. As observed by

the Court in the case concerning Maritime Delimitation in the Black

Sea (Romania v. Ukraine) it found it first had to establish “a

provisional delimitation line, using methods that are geometrically
objective and also appropriate for the geography of the area in which

the delimitation is to take place”. 237In 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

237Case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine),
Judgment of 3 February 2009, p. 37, para. 116.

169 of Ukraine. 238The Court could take that approach because it took into

account the relevant mainland coasts of both parties. In those

circumstances, the coastal projections of the mainland coasts met and

overlapped in the area between them and the provisional equidistance

line provided an appropriate starting point that could produce, as is
also observed by the Counter-Memorial, “an equal division of the

parties’ overlapping entitlements and an equitable result” 23.

6.58. However, in the present case an equidistance line does not achieve

that result. Because the opposite mainland coasts of Nicaragua and

Colombia are more than 400 nautical miles apart, the line of

delimitation of the exclusive econ omic zone does not lie between

them and no purpose would be served by using an equidistance line as
a starting point for any such delimitation. Nor does it make sense to

arbitrarily place an equidistance line halfway between minor features,

such as the islands claimed by each of the Parties adjacent to

Nicaragua’s coast. This points to the obvious conclusion that it has to

be questioned whether there could be an equidistance line in the

present case that might serve as a starting point that is “appropriate for

the geography of the area in which the delimitation is to take place”.

6.59. The Counter-Memorial suggests that in the case of opposite coasts,

the jurisprudence has generally c oncluded that equidistance is an

appropriate starting point 240. That may be true when the areas to be

delimited are located between these opposite coasts. If the areas to be

238Case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine),
Judgment of 3 February 2009, pp. 37 and 39-47, paras. 117 and 123-154. For a
further discussion of the approach of the Court in this case in respect of the
provisional delimitation see infra Sec. V.
239CCM, Vol. I, p. 383, para. 9.6.
240Ibid, pp. 382-383, para. 9.6.

170 delimited are not located between these opposite coasts, the concept of

equidistance itself loses all meaning.

6.60. The Jan Mayen case involved a delim itation between two coasts that

were more than 200 nautical miles apart. Since the maximum area of

entitlement claimed by each of the Parties was to an exclusive
economic zone of 200 nautical mile s, the area of overlapping claims

lay entirely between th eir opposite coasts. Ther e were no claim to

areas as between the Parties that was not located between these coasts.

The Court with all logic considered:

“64. Prima facie, a median line delimitation
between opposite coasts results in general in an
equitable solution, particul arly if the coasts in

question are nearly parallel. When, as in the
present case, delimitatio n is required between
opposite coasts which are insufficiently far
apart for both to enjoy the full 200-mile
extension of continental shelf and other rights
over maritime spaces recognized by

international law, the median line will be
equidistant also from the two 200-mile limits,
and may prima facie be regarded as effecting
an equitable division of the overlapping
area.”241

6.61. In the Colombian scenario presently under consideration, the opposite
coasts are “insufficiently far apart” for Nicaragua “to enjoy the full

200-mile extension of continental shelf and other rights over maritime

spaces recognized by international law”. The “median line” drawn

between these coasts wi ll not “be equidistant from the two 200-mile
limits” but rather this “median line” would be located approximately

241Case concerning Maritime Delimitation in the Area Between Greenland and Jan
Mayen (Denmark v. Norway), Judgment, I.C.J. Reports 1993, p. 66, para. 64.

171 150 miles from the 200-nautical-mil e limit of Nicaragua’s exclusive
economic zone. Therefore, the “med ian line” cannot “be regarded as

effecting an equitable division of the overlapping area.”

6.62. In discussing the appropriateness of the equidistance line as a

provisional starting point for the delimitation between Nicaragua and

the islands of San Andrés and Providencia, the Counter-Memorial

makes mention of the Libya/Malta case. However, the Counter-
Memorial only refers to a part of th e 1985 Judgment of the Court in

that case. Before indicating that the median line between opposite

coasts “by way of a provi sional step in a proce ss to be continued by

other operations, is the most judi cious manner of proceeding with a
view to the eventual achievement of an equitable result” ˗ the passage

quoted by the Counter-Memorial˗ the Court referred to paragraphs 57

and 58 of the Judgment in the North Sea Continental Shelf cases.
What these paragraphs indicate is th at there are differences between a

case of truly opposite coastal states, and one which calls for “ignoring

the presence of islets, rocks and minor coastal; projections, the

disproportionally distorting effect of which can be eliminated…”

6.63. The Counter-Memorial also ignores that the Ju dgment of the Court in

the Libya/Malta case confirms that the es tablishment of a provisional
equidistance line in any case is not a mechanical process. Paragraph

43 of the Judgment observes:

“43. The Court is unable to accept that, even as
a preliminary and provisional step towards the
drawing of a delimitation line, the equidistance
method is one which must be used, or that the
Court is "required, as a first step, to examine
the effects of a delimita tion by application of

172 the equidistance method" (I.C.J. Reports 1982,
p. 79, para. 110). Such a rule would come near

to an espousal of the idea of "absolute
proximity", which was rejected by the Court in
1969 (see I.C.J. Reports 1969, p. 30, para. 41),

and which has since, moreover, failed of
acceptance at the Third United Nations
Conference on the Law of the Sea. That a
coastal State may be entitled to continental

shelf rights by reason of distance from the
coast, and irrespective of the physical
characteristics of the intervening sea-bed and
subsoil, does not entai1 that equidistance is the

only appropriate method of delimitation, even
between opposite or quasi-opposite coasts, nor
even the only permissible point of departure.
The application of equitable principles in the

particular relevant ci rcumstances may still
require the adoption of another method, or
combination of methods, of delimitation, even
from the outset.” 242

6.64. The Counter-Memorial next refers to the Judgment on the merits in
243
the Qatar v. Bahrain case . In that case the Court effected a

delimitation between th e continental shelf and exclusive economic

zone entitlements of the parties in what the Court designated as the
244
northern sector . The Counter-Memorial is correct in observing that
the Court in that delimitation took the equidistance line as a starting

point 245. What the Counter-Memorial fails to mention is the

characterization of the relevant coasts of the parties in the northern

sector. Again, it is worth quoting fro m the Judgment as it serves to

242
Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.J. Reports
2435, p. 48, para. 64.
244CCM, Vol. I, pp. 383-384, paras. 9.9-9.11.
Maritime Delimitation and Territorial Questions between Qatar and Bahrain,
Merits, Judgment, I.C.J. Reports 2001, p. 115, para. 250.
245See CCM, Vol. I, p. 383, para. 9.9.

173underline the importance the Court has always attached to the context
of the specific case:

“246. The Court recalls that in the Libyan Arab
Jamahiriya/Malta case, referred to above, it
stated:

‘the equitableness of an equidistance line
depends on whether the precaution is taken of

eliminating the disproportionate effect of
certain ‘islets, rocks and minor coastal
projections’, to use the language of the Court in
its 1969 Judgment [(case concerning North Sea
Continental Shelf)] (I.C.J. Reports 1985, p. 48,
para. 64)’.

247. The Court further recalls that in the
northern sector the coasts of the Parties are
comparable to adjacent coasts abutting on the
same maritime areas extending seawards into
the Gulf. The northern coasts of the territories
belonging to the Parties are not markedly

different in character or extent; both are flat
and have a very gentle slope. The only
noticeable element is Fasht al Jarim as a remote
projection of Bahrain's coastline in the Gulf
area, which, if given full effect, would “distort
the boundary and have disproportionate
effects” ( Continental Shelf case

(France/United Kingdom), United Nations,
Reports of International Arbitral Awards, Vol.
XVIII, p. 114, para. 244).

248. In the view of the Court, such a distortion,
due to a maritime feature located well out to
sea and of which at most a minute part is above

water at high tide, would not lead to an
equitable solution which would be in accord

174 with all other relevant factors referred to
above” 246.

6.65. The context in which the Court effected the delimitation in the

northern sector in the Qatar/Bahrain case is plainly different from a

delimitation between Nicaragua and Colombia in the area

encompassed by Nicaragua’s 200-nautical-mile exclusive economic
zone. The Court in the former case observed that the pertinent coasts

of the territories of the parties were not markedly different in character

or extent. The opposite is true for the mainland coast of Nicaragua and

the islands of San Andrés and Prov idencia. More analogous to the

present case, the Judgment of the Court in the Qatar v Bahrain

(paragraphs 246 to 248) cas e also confirms that an equidistance line
between comparable coasts of the parties shoul d not be influenced by

minor remote features, and accordi ngly no effect was given to the

feature of Fasht al Jarim 247.

6.66. In its discussion of the Qatar v. Bahrain case, the Counter-Memorial
seems to suggest that the similarity between the rules contained in

Article 15 of the 1982 Law of the Sea Convention and the rules for the

delimitation of the continental shelf and the exclusive economic zone

is relevant in considering the de limitation of the latter zone. The

Counter-Memorial submits that:

“It is clear from the wo rding of Article 15 of
the 1982 Convention that there is a

presumption in favour of an equidistance or
median line boundary for territorial sea
delimitation.

246
Maritime Delimitation and Territorial Questions between Qatar and Bahrain,
247its, Judgment, I.C.J. Reports 2001, pp. 114-115, paras. 246-248.
Ibid, p. 115, paras. 249.

175 […]

Given the close rela tionship between the
“equidistance/special circumstances” rule and
the “equitable principles/relevant

circumstances”, the same priority accorded to
the equidistance line for territorial sea
delimitation applies to the delimitation of
maritime areas lying beyond the territorial
sea” 248.

The Counter-Memorial then quotes from the Cameroon v . Nigeria

case to argue the similarity between the two rules. That similarity, of
course, does not prove a presumption in favor of the equidistance

method. To the contrary, it only high lights the fact that mention of

equidistance was carefully avoided when dealing with the delimitation

of the more extensive maritime areas.

6.67. The absence of a presumption in favor of an equidistance line was

expressed as follows by the C ourt of Arbitration in the Anglo-French

arbitration:
“Consequently, even under Article 6 [of the

Convention on the Continental Shelf] the
question whether the use of the equidistance
principle or some other method is appropriate
for achieving an equitable delimitation is very
much a matter of appreciation in the light of

the geographical and other circumstances. In
other words, even under Article 6 it is the
geographical and other circumstances of any
given case which indicate and justify the use of
the equidistance method as the means of
achieving an equitable solution rather than the

24CCM, Vol. I, p. 385, para. 9.12.

176 inherent quality of the method as a legal norm
of delimitation 249”.

Article 6 of the Convention on the Continental Shelf, like Article 15

of the 1982 Law of the Sea Convention, also refers to the equidistance

method and special circumstances, and unlike Article 15 of the 1982
Law of the Sea Convention is conc erned with the delimitation of the

continental shelf between neighboring States.

6.68. The preceding analysis indicates th at the fundamental problem with

the Counter-Memorial’s approach is that it is premised on the

presumption that the equidistance line always has to form the starting

point of the delimitation process. The most recent Judgment of the

Court on maritime delimitation in the case concerning Maritime
Delimitation in the Black Sea (Romania v. Ukraine) points out that the

first step in the delimitation is not the establishment of a provisional

equidistance line, but the establishment of a “ provisional delimitation

line, using methods that are geom etrically objective and also

appropriate for the geography of th e area in which the delimitation is
250
to take place” .

6.69. In light of the jurisprudence of th e Court and international tribunals,
Nicaragua finds that the conclusion of the Counter-Memorial that the

basic rule of maritime delimitation law as a first step requires the

plotting of an equidistance line 251 is not correct. Nor is it correct to

place an equidistance line between mi nor geographical features in a

249 Case concerning the Delimitation of Continental Shelf between the United
Kingdom of Great Britain and Northern Ireland, and the French Republic, Decision
of 20 June 1977. RIAA, Vol. XVIII, UN, pp. 45-46, para. 70.
250Ibid, p. 37, para. 116. Emphasis provided.
251CCM, Vol. I, pp. 385-386, para. 9.13.

177 manner that ignores the mainland co asts of both parties, or to
construct the line without taking an extensive and adjacent coastline

into account while giving full weight to minor and insignificant islets

and rocks. As the Court has repe atedly observed, the provisional
delimitation line has to be geometri cally objective and appropriate for

the geography of the delimitation area. Only after an assessment of

that geography in the light of the app licable law will it be possible to

determine what constitutes an ap propriate provisional delimitation
line. This question is addressed below.

V. The Provisional Delimitation Line Appropriate to the Area to

be Delimited

6.70. According to the Court’s Judgm ent in the case concerning Maritime

Delimitation in the Black Sea (Romania v. Ukraine) the provisional

delimitation line has to meet two criteria:

1. It has to be appr opriate for the area in which the

delimitation takes place; and

2. It has to be geometrically objective.

Thus, it is first of all necessary to inquire into the characteristics of the

delimitation area. This inquiry will naturally center around the limited

area of the Colombian scenario with which this chapter is dealing.

6.71. The relevant area for the delimitation sought by Colombia within

Nicaragua’s 200-nautical-mile excl usive economic zone entitlement

lies between Nicaragua’s mainland coast and the outer limit of
Nicaragua’s 200-nautical-mile zone . There is no opposite coast of

another coastal State which blocks the frontal seaward projection of

178 Nicaragua’s coast. Within this area there are a number of small
maritime features. Any provisional delimitation line would have to be

appropriate for this delimitation area.

6.72. Nicaragua believes that an equi distance line would not be an

appropriate starting point for such a delimitation in the light of the

characteristics of the delimitation area. An equidistance line as a

starting point could have merit where the main area to be delimited is
located between two opposite and si milar coasts (see paragraph 6.55

above). In the present case, and under the scenario put forward by

Colombia, the exercise is indefens ible, since there is no Colombian

coast opposite Nicaragua’s, and even if San Andrés and Providencia
could be said to collectively cons titute a “coast” – which Nicaragua

disputes – the area located be tween them and the Nicaraguan

mainland represents no more than 50 % of the area to be delimited,
and the two “coasts” are entirely dissimilar. In sum, it makes no sense

to place a provisional delimitati on line midway, or equidistant,

between San Andrés and Prov idencia on the one hand, and

Nicaragua’s mainland coast or her coastal islands on the other.

6.73. In light of the conclusion that th e equidistance line proffered by

Colombia does not provide an ap propriate starting point for any
delimitation between Nicaragua and Colombia, it is necessary to

consider if there is another met hod which can be used as a starting

point of a delimitation. Nicaragua recognizes that this method will

need to meet the two criteria of the Court. The line not only has to be
appropriate for the area in which th e delimitation takes places, but it

also has to be geometrically objective.

1796.74. The jurisprudence of the Court and international tribunals indicates

the way forward in the search for a provisional delimitation line. As

was demonstrated above in Section IV, that jurisprudence consistently
indicates that in cases in which th e equidistance line is considered to

provide an appropriate starting point, a first step is to identify the

appropriate basepoints for establishi ng the equidistance line. In that

exercise, the Court and tribunals have routinely excluded islands,

islets and rocks as basepoints. A nu mber of examples illustrate this
252
point. Indeed, it is the norm . In the Anglo-French arbitration, the
Court of Arbitration discounted the Channel Islands in establishing the

median line between the opposite coasts of the United Kingdom and

France, and in the case concerning Maritime delimitation in the Black

Sea (Romania v. Ukraine), the Court disregar ded Sulina Dyke and

Serpents’ Island in constructing th e provisional equidistance line,
stating,

“To count Serpents’ Island [located 20 miles of
Ukraine’s Black Sea coast] as a relevant part of
the coast would amount to grafting an
extraneous element onto Ukraine’s coastline;

the consequence would be a judicial
refashioning of geogr aphy, which neither the
law nor practice of maritime delimitation
authorizes” 25.

6.75. Similarly, in the case concerning Maritime Delimitation and
Territorial Questions Between Qatar and Bahrain (Qatar v. Bahrain),

the Court decided to disregard th e “very small island” of Qit’at

Jaradah in drawing the median line, stating:

252
253North Sea Continental Shelf, Judgment, I.C.J. Reports 1969, pp. 36-37, para. 57.
Maritime Delimitation in the Black Sea (Romania v. Ukraine) , I.C.J., Judgment
of 3 February 2009, p. 45, para. 149.

180 “if its low-water line were to be used for

determining a basepoint in the construction of
the equidistance line, and this line taken as the
delimitation line, a di sproportionate effect
would be given to an insignificant maritime
254
feature” .

6.76. Citing Libya/Malta for the proposition that “t he equitableness of an

equidistance line depends on whet her the precaution is taken of

eliminating the disproportionate effect of certain ‘islets, rocks and

minor coastal projections’” 255, the Court similarly decided to give no

effect to the island of Fasht al Jarim, “a remote projection of Bahrain’s

coastline in the Gulf area, which, if given full effect, would ‘distort
256
the boundary and have disproportionate effects” .

6.77. In the Libya/Malta Case itself, the Court disregarded the presence of

the islet of Filfla, five kilometers south of the main island of Malta,
for purposes of drawing the prov isional equidistance line on the

continental shelf separating Libya and Malta . 257

6.78. Another case worthy of th e Court’s attention is Nicaragua v.

Honduras. In that case, the maritime boundary adopted by the Court

consisted primarily of a bisector lin e drawn between the straight line

coastal fronts of the two States’ mainland coasts. In determining the

angle of the bisector line, no account was taken of the offshore islands

254Maritime Delimitation and Territorial Questions between Qatar and Bahrain,
Merits, Judgment, I.C.J. Reports 2001, pp. 104 and 109, para. 219.
255Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.J. Reports

2565, pp. 49-50, para. 67.
Maritime Delimitation and Territorial Questions between Qatar and Bahrain,
257its, Judgment, I.C.J. Reports 2001, pp. 114 -115, para. 247.
Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.J. Reports
1985, p. 48, para. 64.

181 and islets in question; the angle was determined solely by reference to

the mainland coastal fronts of Nicaragua and Honduras.

6.79. The approach of disregarding minor insular features and specific

basepoints can also be applied in the present case. Nicaragua

considers that it is appropriate to disregard all basepoints on islands

and cays claimed by Colombia in establishing the provisional

delimitation line (as well as all corresponding basepoints that

Colombia similarly located on Nicaragua’s insular features). This
conclusion is reached on the basis of the physical characteristics of

these features and in the context of the delimitation area as compared

to similar features which have been given no effect in establishing a

provisional delimitation line in ot her cases, such as the Channel

Islands in the Anglo-French arbitration and Abu Musa in the
Dubai/Sharjah arbitration 258. The Tunisia/Libya case is also

instructive in this respect. In that case, the Court effected a

delimitation by first selecting a li ne which was unrelated to the

equidistance line. That line comple tely ignored the Tunisian island of
259
Jerba . With an area of about 515 squa re kilometers (approximately

20 times larger than San Andrés), Jerba is a much more significant
island that either San Andrés or Providencia. Jerba is also closely

linked to the mainland coast of Tunisia and not an isolated feature.

6.80. Colombia’s delimitation claim places no basepoints on either of the

two opposite mainland coasts. Even if basepoints were placed on

258
The geography of the islands and cays under consideration in the present case is
described in Chapter IV of the Reply. For a discussion of the treatment of the
Channel Islands in the Anglo French arbitration and Abu Musa in the Dubai/Sharjah
259itration see pp. 149-156, paras. 6.14- 6.24 above.
Continental Shelf (Tunisia/Libyan Arab Jamahiriya), Judgment, I.C.JReports
1982, p. 85, para. 120.

182 Nicaragua’s coast, there woul d be no equivalent Colombian
basepoints from which to establish a provisional equidistance line,

since Colombia’s insular possessions adjacent to Nicaragua must be

disregarded for purposes of construc ting the provisional equidistance
line.

6.81. In the light of the conclusion that there are no appropriate Colombian

basepoints from which to establis h a provisional line, the question
arises how to establish such a line. In this case, the answer is also

readily available in the jurisprudence. In a case in which a feature is

not taken into account as a basepoi nt in establishing the provisional

equidistance line, the jurispruden ce has dealt with it in one of two
ways, depending on whether the feature is located in the maritime

zone of the party which has sovereignty over it or in the maritime

zone of the other party. In the latter case, the jurisprudence has
commonly accorded a maximum 12-nautical-mile zone to such

features and enclaved them within the maritime zones of the other

party. This was for instance the ca se for the Channel Islands in the

Anglo-French arbitration. Chapter V dealt with this case with respect
to the situation involving the delimitation of the continental shelf. In

the present scenario, whether dealing with a continental shelf

delimitation as requested by Nicaragua or an economic exclusive zone
delimitation within Nicaragua’s 200-nautical-mile limits as sought by

Colombia, the same logic applies.

6.82. This results in a set of provisional delimitation lines which coincide
with the 12-nautical-mile limit drawn from the baselines of San

Andrés and Providencia/Santa Catalina, and at the 3-nautical-mile

limit drawn from the cays claimed by Colombia. In accordance with

183 the applicable rules of international law as contained in Article 5 of
the 1982 Law of the Sea Convention, th e normal baseline is the low-

water line along the coast as marked on large scale charts officially

recognized by the coastal State. As was demonstrated in Chapter IV,
this implies that there is no provisi onal delimitation line in the area of

the bank of Quitasueño, which is totally submerged at high-tide.

6.83. Nicaragua believes that the set of provisional delimitation lines it
proposes meets the requirements the Court indicated for such a line in

the case concerning Maritime Delimitation in the Black Sea (Romania

v. Ukraine). Nicaragua’s provisional delimitation lines are appropriate

for the geography of the area in which the delimitation is to take place.
The provisional lines are also geometrically objective. They allow the

Court to take due account of the se award projection of the mainland

coast of Nicaragua and, in accordance with the relevant international
jurisprudence, do not give undue wei ght to minor features. Figure 6-9

shows the resulting delimitation.

VI. The Relevant Circumstances do not Require an Adjustment of

the Provisional Delimitation Lines Posited by Nicaragua

6.84. It remains to be considered whethe r there are relevant circumstances

requiring an adjustment of this set of provisional lines. Nicaragua

considers that there are no circumst ances indicating that there is a
need to adjust the provisional delimitation lines to achieve an

equitable delimitation.

184 A.G EOGRAPHICAL C IRCUMSTANCES

6.85. The provisional delimitation lines result in maritime limits around the

islands of San Andrés and Providencia/Santa Catalina at a distance of

12 nautical miles from the baselin es established in accordance with

international law. In the Memorial, Nicaragua explained that the very

limited size and other characteristics of the insular features other than

San Andrés and Providencia imply th at they should be enclaved at
most in a territorial sea of three nautical miles 260. In light of the

relevant jurisprudence and State practice this would constitute an

equitable solution in view of th e characteristics of these cays 26.

Figure 6-10 shows the result of applying a 12-nautical-mile enclave to

the main islands of San Andrés a nd Providencia/Santa Catalina, and a

3-nautical-mile enclave to the minor cays.

6.86. The general recognition of a 12-na utical-mile territorial sea was

inspired by the need to protect the vital security interests of coastal

States. It is not tenable to argue that the security interests of Colombia

in these small, barren, uninhabited cays, with no economic life of their

own and far from her coasts (but ne ar the Nicaraguan coast) require a

12-nautical-mile territorial sea. At the same time, Nicaragua
recognizes that in two recent cases ˗ the Territorial and Maritime

Dispute between Nicaragua and Honduras in the Caribbean Sea

(Nicaragua v. Honduras) and the case concerning Maritime

Delimitation in the Black Sea (Romania v. Ukraine) ˗ the Court

accorded small islets a 12-nautical-mile territorial sea in a delimitation

260NM, Vol. I, pp. 254-260, paras. 3.127-3.136.
261See also the discussion at above Chap. V, and p. 208, para. 6.130 below, which
indicates that according all of the fures a 12-nautical-mile area results in
attributing Colombia more than sufficie nt maritime areas in comparison to the
coastal length ratios of Nicaragua and Colombia.

185 262
of the exclusive economic zone and the continental shelf . However,

all of those features were close to the mainland coast of the sovereign
that possessed them, and the maritime attribution was the result of a

composite reasoning that aspired to an equitable result. If the same

result were woodenly applied to the cays under consideration in the

present case, they would be attributed a maritime zone which is totally
disproportionate to their actual significance. In that respect, Nicaragua

recalls the example she provided in paragraph 3.129 of the Memorial.

Giving 12-nautical-mile zone to an isolated cay –in reality nothing

more than a rock barely protruding form the sea– would give it the
same area of territorial sea as a stra ight mainland coast of more than

37 nautical miles.

6.87. Nicaragua considers that the dispro portionate result of attributing a

12-nautical-mile territorial sea to the cays is a relevant circumstance to
be taken into account in assessing th e equitableness of the provisional

delimitation line. According a 12-nautical-mile territorial sea to all the

disputed cays in this case would give them a total maritime area of

9,200 square kilometers, whereas they lack any significance.

6.88. The only features which arguably could receive more than a 12-

nautical-mile territorial sea are the islands of San Andrés and

Providencia. This would be the case if they were located in mid-ocean
far from other States and not off a large mainland coast of another

State. To better assess the weight that San Andrés and Providencia

should be accorded, the following paragraphs offer a comparative

analysis of these islands to othe rs which have been given limited

262See Maritime Delimitation in the Black Sea (Romania v. Ukraine) , I.C.J.,
Judgment of 3 February 2009, p. 57, para. 188.

186 effect in the delimitation of the continental shelf and exclusive
economic zone between neighboring States.

6.89. Before embarking on that comparative analysis it is, however,
appropriate to make an assessment of the space ther e actually might

be for adjusting the provisional delimitation lines. In this regard, it is

interesting to note the solution th e Court of Arbitration found for a

seaward projection of Saint Pierre and Miquelon in the Delimitation of
Maritime Areas between Canada and France. The Award, in effecting

a delimitation, enclaved the islands to the west and to the east, but

accorded them maritime zones sout hward to the 200-nautical-mile

limit through a corridor of the same breadth as the southward coastal
projection of the islands.

6.90. Figure 6-11 shows the potential result of adapting the approach of the
Court of Arbitration in the Delimitation of Maritime Areas between

Canada and France to San Andrés and Providencia. Under this

approach, San Andrés and Providencia would be enclaved to the west,

north and south, but would enjoy ma ritime zones projecting eastward
beyond the 200-nautical-mile exclusiv e economic zone of Nicaragua.

This solution attributes approximately an additional 4,000 square

kilometers of maritime area to Colo mbia, if compared to the enclave
solution advocated by Nicaragua and discussed further below.

6.91. The jurisprudence in a significant number of cases has had to assess

the impact of islands on the delimitation of maritime boundaries
between States. The first instan ce in this respect was the Anglo-

French arbitration. As is observed in paragraphs 5.18 to 5.25 above,

the Court of Arbitration in that case found that it was appropriate to

187 draw a median line between the mainland coasts of France and the

United Kingdom. The Channel Is lands were ignored in the

establishment of that median line and were only accorded a 12-
nautical-mile enclave in a second step of the delimitation.

6.92. The Counter-Memorial denies that the Channel Islands is analoguos
263
with the present case . The Counter-Memorial gives three arguments

to reject the analogy between the tw o cases. First, Colombia submits

that the Channel Islands are very close to the French mainland and
that this was one of the main reasons to treat them as a special

circumstance, and that San Andrés and Providencia are a considerable

distance from the Nicaraguan mainland. Second, the Counter-

Memorial submits that the Channel Islands are surrounded on three

sides by French territory, whereas San Andrés and Providencia are
facing the Nicaraguan mainland coast. Third, the Counter-Memorial

submits the delimitation concerned two mainland coasts and that the

Channel Islands were “on the wrong side” of the mid-Channel median
264
line .

6.93. The Counter-Memorial is parsimonious in referring to the reasoning
of the Court of Arbitration for en claving the Channel Islands. A look

at that reasoning goes a long way to undermining the Counter-

Memorial’s argument. The Court of Arbitration summarized its

findings on the delimitation in the English Channel as follows in

paragraph 199 of its 1977 decision:

263
264CCM, Vol. I, pp. 330-331, paras. 7.42-7.43.
Ibid, pp. 331-333, paras. 7.44-7.48.

188 “The Court considers th at the primary element
in the present problem is the fact that the
Channel Islands region forms part of the
English Channel, throughout the whole length
of which the Parties face each other as opposite

States having almost equal coastlines. The
problem of the Channel Islands apart, the
continental shelf boundary in the Channel
indicated by both customary law and Article 6,
as the Court has previously stated, is a median

line running from end to end of the Channel.
The existence of the Channel Islands close to
the French coast, if permitted to divert the
course of that mid-Channel median line, effects
a radical distortion of the boundary creative of
inequity. The case 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 after another long distances from the
mainland. The precedents of semi-enclaves,

arising out of such cases, which are invoked by
the United Kingdom, do not, therefore, seem to
the Court to be in point. The Channel Islands
are not only “on the wrong side” of the mid-
Channel median line but wholly detached
geographically from the United Kingdom” 26.

6.94. As paragraph 199 indicates, the Court of Arbitration did not decide to

enclave the Channel Islands for the mere reason that they were close

to the French mainland, but up on the Court of Arbitration’s

assessment of the totality of the delimitation area that they were “on
the wrong side of the mid-Channel median line” and “wholly detached

geographically from the United Kingdom”. The case is clearly

analogous to the present one, which is proved merely by substituting

“mid-Caribbean” for “mid-Channel”, and “Colombia” for the “United

265Case concerning the Delimitation of Continental Shelf between the United
Kingdom of Great Britain and Northern Ireland, and the French Republic, Decision
of 20 June 1977. RIAA, Vol. XVIII, UN, p. 94, para. 199.

189 Kingdom”. This indicates that the f act that the Channel Islands are
close to the French mainland coast is not in itself relevant for an

assessment of their treatment.

6.95. The Court of Arbitration’s assessment that the Channel Islands were

“wholly detached geographically from the United Kingdom” does not

help Colombia. This is a conclusion with obvious implications for the

islands of San Andrés and Provi dencia. The distance between the
Channel Islands and the mainland coast of the United Kingdom is

approximately 90 kilometers, wh ereas the distance between the

islands of San Andrés and Provide ncia and the mainland coast of

Colombia is approximately 750 kilometers. The conclusion that the
Channel Islands are geographically detached from the mainland coast

of the United Kingdom thus applies a fortiori to the islands of San

Andrés and Providencia.

6.96. What the Counter-Memorial is implicitly suggesting is that San

Andrés and Providencia should get a better treatme nt although they

are in a worse situation than islands which are buttressed by a
mainland coast behind them.

6.97. It should also be noted that the Court of Arbitration discussed the
relationship between the Channel Is lands and the mainland coast of

the United Kingdom in the context of an argument that the continental

shelf of the Channel Islands should be linked to the continental shelf

of the British mainland. The Cour t of Arbitration rejected this
proposal on the basis that the Channel Islands were detached from the

mainland of the United Kingdom. Ag ain this is a conclusion which

also applies to San Andrés and Providencia. There is no basis in law

190 or fact to justify that there shou ld be uninterrupted maritime zones
between the islands of San Andrés and Providencia and the

Colombian mainland.

6.98. Colombia seems to suggest that th e impact of the Channel Islands on

the delimitation between France and the United Kingdom would have

been much bigger than the impact of San Andrés and Providencia in

the present case. The opposite is actu ally true. An equidistance line
between France and the United Kingdom giving full weight to the

Channel Islands would have only affected a small part of the mid-

Channel median line, which divide d the area of overlapping claims

equally, and would have given the United Kingdom a limited area of
continental shelf over and above the continental shelf it was awarded

(see Figure 5-3). By contrast, th e line of delimitation proposed by

Colombia is not only heavily affected by the treatment she wishes to
give to San Andrés and Providencia , but entirely dependent on those

islands. Indeed, there would be no “m edian line” at all without taking

them into account. The result of Co lombia’s doing so is to give them

three times as much maritime sp ace as Nicaragua, notwithstanding
Nicaragua’s 450 kilometer-long mainland coast (see Figure 6-8).

6.99. To sum up the discussion of the case involving the Channel Islands,
the Counter-Memorial’s argument largely ignores the reasoning of the

Court of Arbitration. A comparison of the geographical context of that

case with the present one indicates that a 12-nautical-mile enclave for

San Andrés and Providencia is wholly consistent with the reasoning of
the Court of Arbitration.

1916.100. The Counter-Memorial dismisses the relevance of the Dubai/Sharjah

arbitration because the geographic situation in which that delimitation
was effected supposedly was entirely dissimilar from the situation in

the present case 266. Colombia bases this conclusion on a number of

grounds. First, according to the Counter-Memorial, the delimitation

was primarily one between States wi th adjacent coasts sharing a land

boundary. This is a gross oversimplif ication of the reasoning of the
Court of Arbitration. The analysis contained in the Award indicates

that the Court of Arbitration was mindful of the existing jurisprudence

and the requirement to assess the weight of particular features in the
267
context of the overall geographi cal framework of a delimitation . In

its analysis the Court of Arbitra tion explicitly agreed with the
reasoning of the Court of Arbitration in the Anglo-French arbitration:

“The Court of Arbitration in the Arbitration
between the United Kingdom of Great Britain
and Northern Ireland and the French Republic

on the Delimitation of the Continental Shelf ,
1977, found that there was:
… a single rule, a combined equidistance-
special circumstances rule … (Award, para.
68.)

and that the equidistance principle of
delimitation (on which, in a modified form, the
Government of Sharjah has placed reliance in
its claim for “half-effect” to the accorded to the
island of Abu Musa) must be subject to the

overriding aim of achie ving an equitable
apportionment of shelf areas between adjacent
or opposite States. (Awar d, para. 97.) As has
been noted earlier, the principles of
delimitation expounded in Article 6 of the 1958

Convention on the Continental Shelf were seen
266
267CCM, Vol. I, pp. 334-335, para. 7.52.
Dubai-Sharjah Border Arbitration of 19 October 1981, ILR Vol. 91, Grotius
Publication Limited, 1993, pp. 669-677.

192 by the Court of Arbitration as applicable within
the overall context of reaching an equitable

solution to the delimitation of any shelf
area”268.

6.101. The Counter-Memorial also argues that the semi-enclave around the

island of Abu Musa “only caused a minor deflection to the adjacent
269
coasts equidistance line” . That depiction of the outcome of the case

suggests that Abu Musa in any case would have had a limited impact

on the equidistance line. The realit y is quite different. As can be

appreciated from Figure 6-12, an eq uidistance line giving full weight

to Abu Musa veers in a completely different direction than the first
part of the equidistance line betw een the mainland coasts before the

latter line reaches the 12-nautical-mile enclave around Abu Musa.

6.102. The Counter-Memorial further indicates that in the Dubai/Sharjah

arbitration there was “a single small island situated in the middle of a

confined maritime area which would inequitably distort the course of
270
an equidistance line” . The Counter-Memorial contrasts this with

Colombia’s possessing “a lengthy archipelago comprising many

islands and cays, the nearest isla nd of which is over 100 miles from
Nicaragua, and Nicaragua also possesses offshore islands which figure

in the delimitation. As such, the situation is very different from that

presented in the Dubai-Sharjah arbitration” 271. This comparison by

the Counter-Memorial of the Dubai/Sharjah arbitration to the present

case generates a number of comments.

268
Dubai-Sharjah Border Arbitration of 19 October 1981, ILR Vol. 91, Grotius
269lication Limited, 1993, p. 676.
CCM, Vol. I, p. 335, para. 7.53.
270Ibid, p. 335, para. 7.54.
271Ibid, pp. 335-336, para. 7.54.

1936.103. First, in discussing Abu Musa in paragraph 7.54, the Counter-

Memorial refers to it as a small island. The island of Abu Musa is
inhabited and measures about 12 square kilometers. The island of San

Andrés measures about 25 square kilometers and the island of

Providencia measures about 17 squa re kilometers. Not much of a

difference.

6.104. Secondly, the Counter-Memorial refers to Abu Musa as a single island

and sets it apart from Colombia’s “lengthy archipelago” 272. Again, an

interesting comparison. The distance of Abu Musa to the nearest point

on the coast of the mainland of Shar jah is about 60 kilometers and the

distance to the nearest island is less than 40 kilometers. These are
considerable distances, but certainly much less than the distance of 83

kilometers between the islands of San Andrés and Providencia or the

distance of 305.6 kilometers between San Andrés and Serranilla, and

the distance of over 700 kilometers to the Colombian mainland. These

figures confirm the conclusion of Ni caragua that on the basis of the
jurisprudence San Andrés and Provi dencia have to be treated as

separate single islands for the purposes of maritime delimitation.

Finally, the Counter-Memorial observes that Abu Musa is “situated in

the middle of a confined maritime area which would inequitably
273
distort the course of an equidistance line” . This description again
fits the case of the islands of Sa n Andrés and Providencia. The only

difference is the fact that the total delimitation area is less confined in

the present case. Like Abu Musa, th e single island of San Andrés and

the single island of Providencia are located approximately in the

middle of the delimitation area. Like Abu Musa, they inequitably

272
273CCM, Vol. I, p. 335-336, para. 7.54.
Ibid, p. 335, para. 7.54.

194 distort the delimitation line. 274In the case of Abu Musa that effect was

avoided by according the island of Abu Musa a 12-nautical-mile

enclave. That same solution should be applied to the islands of San

Andrés and Providencia.

6.105. Prior cases have not only enclav ed islands, which were found to

constitute special or relevant circumstances, but have also given them

limited effect in other ways. Two examples - the treatment of the

Kerkennah Islands in the Tunisia/Libya case, and that of Malta in the

Libya/Malta case - suffice to show that much more significant islands

than San Andrés and Providencia ha ve been accorded limited effect.

The Kerkennah Islands and Malta had longer coasts behind them. The

presence of a longer coas t explicitly was taken into consideration and
limited the extent to which the islands were discounted. In the case of

San Andrés and Providencia, there is no mainland coast backing the

islands.

6.106. In the Tunisia/Libya case, the Court in establishing the second

segment of the continental shelf boundary had to consider the weight

to be accorded to the Kerkennah Islands. The starting point for

establishing this segment of the boundary was provided by the general
275
direction of the mainland coast of Tunisia . In that respect, the

Judgment provides a further example of a provisional starting line for

the delimitation which disregarded th e presence of is lands. It should

274The award in the Dubai/Sharjah arbitration among others observes that giving
full weight to certain islands would “produce a distortion of an equidistance line or
an exaggerated result which would be inequitable” Dubai-Sharjah Border
Arbitration of 19 October 1981, ILR Vol. 91, Grotius Publication Limited, 1993, p.
676.
275Continental Shelf (Tunisia/Libyan Arab Jamahiriya), Judgment, I.C.JReports
1982, p. 88, para. 127.

195 2
also be noted that the Kerkennah Islands are much larger (180 km )
2
than either the island of San Andrés (25 km ) or the island of
Providencia (17 km 2).

6.107. Having established a provisional starting line, the Court noted that:

“the bearing of this line is approximately 42º to
the meridian. To the east of this line, however,
lie the Kerkennah Islands, surrounded by islets
and low-tide elevations, and constituting by

their size and position a circumstance relevant
for the delimitation, and to which the Court
must therefore attribute some effect. The area
of the islands is some 180 square kilometres;
they lie some 11 miles east of the town of Sfax,
separated from the mainland by an area in

which the water reaches a depth of more than
four metres only in certain channels and
trenches. Shoals and low-tide elevations also
extend on the seaward side of the islands
themselves, which are surrounded by a belt of
them varying from 9 to 27 kilometres in width.

In these geographical circumstances, the Court
has to take into account not only the islands,
but also the low-tide elevations which, while
they do not, as do islands, have any continental
shelf of their own, do enjoy some recognition

in international law for certain purposes, as is
shown by the 1958 Geneva Conventions as
well as the draft conven tion on the Law of the
Sea. It is not easy to de fine what would be the
inclination of a line drawn from the most
westerly point of the Gulf of Gabes to seaward

of the Kerkennah Islands so as to take account
of the low-tide elevations to seaward of them;
but a line drawn from that point along the
seaward coast of the actual islands would
clearly run at a bearing of approximately 62º to

the meridian. However, the Court considers
that to cause the delimita tion line to veer even
as far as to 62º to run parallel to the island

196 coastline, would, in the circumstances of the
case, amount to giving excessive weight to the
Kerkennahs.

129. The Court would r ecall however that a

number of examples are to be found in State
practice of delimitations in which only partial
effect has been given to islands situated close
to the coast; the method adopted has varied in
response to the varying geographical and other

circumstances of the particular case. One
possible technique for this purpose, in the
context of a geometrical method of
delimitation, is that of the “half-effect” or
276
“half-angle” .

6.108. The reasoning of the Court leading to a decision on the weight to be

accorded to the Kerkennah Islands i ndicates that their size and close

relationship to the mainland coast necessitated adjusting the
provisional line to arrive at the final delimitation line. The reasons for

giving some effect to the Kerkennah Islands are not present here, since

San Andrés and Providencia are almost 6 and more than 7 times

smaller than the Kerkennah Islands , respectively, and they are both

completely detached from the Colombian mainland.

6.109. In the Libya/Malta case, the Court as a first step in the delimitation

process traced an equidistance line between Libya and Malta,

disregarding as basepoints the stra ight baselines of Malta and the
277
small islet of Filfla. The Court then turned to the question whether

that equidistance line should be adjust ed in the light of the relevant
circumstances of the case. The Court observed there was a large

276
Continental Shelf (Tunisia/Libyan Arab Jamahiriya), Judgment, I.C.JReports
2772, pp. 88-89, paras. 128-129.
Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.J. Reports
1985, p. 48, para. 64.

197 difference in the lengths of the relevant coasts – the relevant coast of

Malta measured 24 miles (44 kilome ters) and that of Libya 192 miles
278
(356 kilometers) . The Court then used a median line between Libya
and Sicily (Italy) giving no effect to Malta to establish the maximum

extent of the shift of the Court’ s provisional delim itation line. The

distance between these two lines was 24 ′ of latitude. Next the Court

arrived at a boundary line by shif ting its provisional line not by the

full 24 ′ of latitude to the north, but, in according some weight to
279
Malta, it shifted the line by 18 ′ of latitude . That is, it accorded
Malta one quarter of this area.

6.110. A comparison of the situation of that of Malta to San Andrés and

Providencia is interesting. San An drés and Providencia are much

smaller than Malta. Malta measures some 246 square kilometers
making it almost 9.5 times bigger than San Andrés and almost 14.5

times bigger than Providencia. The relevant coast of Malta identified

by the Court is almost three times longer than the coast of San Andrés

facing the mainland of Nicaragua and five and a half times that of

Providencia. On the other hand, the re levant coast of Libya identified

by the Court is almost 100 kilometers shorter than the relevant coast
of Nicaragua. The Court in the Libya/Malta case put a limit on the

extent of a provisional median line by referring to the longer coast of

Sicily behind the coast of Malta. In the case of San Andrés and

Providencia, there is no such longer coast. Furthermore, the

southeastern tip of Malta lies appr oximately 340 kilometers from the
nearest point on the coast of Libya. The distance between the

mainland coast of Nicaragua and San and Andrés and Providencia is

278
Continental Shelf (Lybian Arab Jamahiriya/Malta), Judgment, I.C.J.Reports
2795, p. 50, para. 68.
Ibid, pp. 51-53, paras. 71-73.

198 much less. Furthermore, as a cons equence of the di stance between

Malta and Libya and the presence of Italy to the north of Malta, the

Court did not have to consider whether a boundary might be located to

the north of Malta. The situation in the present case is different.

Nicaragua’s 200-nautical-mile zone extends well to the east of the
islands of San Andrés and Providenc ia and there is no mainland coast

behind the islands blocking the projection of Nicaragua.

B.S TATE PRACTICE CONCERNING M INOR ISLANDS INVOKED BY

C OLOMBIA

6.111. The Counter-Memorial invokes a number of examples from State

practice in the form of bilateral delimitation agreements to support

Colombia’s proposed delimitation methodology. In that respect, the

Counter-Memorial refers both to Colombia’s own practice with her
280
neighboring States and the practice of third States . As indicated

below in paragraphs 7.27 to 7.29, the jurisprudence does not show any

support for using Colombia’s own self-serving practice as a precedent.
With one exception, the present section will therefore only address the

bilateral practice of third States invoked by theCounter-Memorial.

That exception concerns the role of the islands of Los Monjes in the

delimitation between Colombia and Venezuela.

1. Colombia/Venezuela

6.112. The Memorial observed that Colombia has taken the position that no

weight should be given to sma ll islets in connection with the

delimitation of the maritime boundary with Venezuela in the Gulf of
281
Venezuela and outside the Gulf in the Caribbean Sea . The Counter-

28CCM, Vol. I, pp. 352-364, paras. 8.33-8.56.
28NM, Vol. I, p. 259, para. 3.135.

199 Memorial replies to this by noting that no definitive boundary has

been agreed upon between Colombia and Venezuela, and that the Los
Monjes islands “are located about 19 miles off the Colombian coast,

i.e. less than twice the breadth of the territorial sea”.

6.113. Both of Colombia’s arguments are unconvincing. First, the fact that
there is no boundary agreement be tween Venezuela and Colombia

does not negate the fact that it is Colombia’s position that Los Monjes

should get no weight in a delimitation – a position, one supposes,

which is based on a careful assessme nt of the jurisprudence of the
Court and arbitral tribunals.

6.114. Secondly, the distance of Los Monjes to the Colombian coast is not

the decisive factor since their dist ance to the Gulf and the coast of

Venezuela would balance this out. Specific circumstances always
have to be assessed in context. A comparison of Los Monjes and

Colombia’s “San Andrés Archipela go” shows that the latter have a

much more pronounced impact on the putative boundary than Los

Monjes. Among other considerations , the Los Monjes islands lie
outside a predominantly Venezuelan gulf, while, the islands of San

Andrés lie inside a predominantly Nicaraguan part of the Caribbean

Sea. Thus, if Colombia finds that the Los Monjes islands should be

disregarded completely in her delimitation with Venezuela, the same
applies a fortiori for her “archipelago” in the delimitation with

Nicaragua.

28CCM, Vol. I, p. 336, para. 7.56.

200 2. Italy and Tunisia

6.115. The Counter-Memorial in paragraph 7.51 reject s the relevance of the

delimitation between Italy a nd Tunisia, to which the Memorial had

made reference 283. The Counter-Memorial submits that the geographic

context of that delimitation is differe nt from the present case because

the Italian islands in question either straddled the equidistance line
between the mainland coasts or lay “on the wrong side” of it 284. This

is again the same fallacious reasoning Colombia applies elsewhere in

the Counter-Memorial. The fact that there are two mainland coasts

instead of only one mainland coast is not decisive of the treatment

small islands should get in a maritime delimitation.

6.116. The treatment of small islands has to be assessed in the overall context

of a delimitation. That context is remarkably similar in the

delimitation involving Tunisia and It aly and the delimitation between

Nicaragua and Colombia. The delim itation area between Italy and

Tunisia involving the enclaved islands lies between the mainland
coast of Tunisia and the major Italian island of Sicily. In the middle of

that delimitation area a number of small Italian islands are located. In

the case of any delimitation within Nicaragua’s 200-nautical-mile

exclusive economic zone entitlement, the delimitation area would lie

between the mainland coast of Nicaragua and the outer limit of

Nicaragua’s 200-nautical-mile zone. The islands of San Andrés and
Providencia are located in the middle of that area. To put the two

cases in proper perspective, it is also useful to compare the geography

of the islands. The largest of th e Italian islands involved in the

delimitation with Tunisia, Pantelle ria, has a coast facing Tunisia of

283
284NM, Vol. I, p. 245, para. 3.109.
CCM, Vol. I, p. 334, para. 7.51.

201 about 30 kilometers, or about two tim es the length of the coast of San

Andrés facing the mainland coast of Nicaragua, and about three times
the coast of Providencia. With a si ze of about 83 square kilometers,

Pantelleria is more than three times bigger that San Andrés and almost

five times bigger than Providencia. The second largest Italian island,

Lampedusa, has a facing coast of 24 kilometers, or about one and a
half times the coast of San Andrés and about three times the coast of

Providencia, and has an area of 20 square kilometers (somewhat

smaller than San Andrés but bigger than Providencia). To make this

comparison complete, the coast of Tunisia between Cape Bon and the
land boundary with Libya facing the islands measures approximately

430 kilometers or slightly less than the 450 kilometers of Nicaragua’s

coast facing the delimitation area. In light of the above, Nicaragua

remains of the view that the delimitation between Tunisia and Italy

points to the appropriateness of an enclave solution for the islands of
San Andrés and Providencia.

3. Other States

6.117. Other State practice discussed in paragraphs 9.47 to 9.55 of the

Counter-Memorial are not helpful to the Colombian case, as the
comparisons are based on the erroneous assumption that the mainland

coast of Nicaragua does not constitute part of the coast relevant for the
285
delimitation with Colombia .

6.118. The maritime delimitation agreement between India and the Maldives

discussed in paragraph 9.47 of the Counter-Memorial is considered in

two sections by Colombia. A first part of the delimitation line is

situated between small islands on bo th sides and thus has no relation

28See CCM, Vol. I, p. 401, para. 9.55.

202 to the situation involving a mainland coast and small islands. The

second part of the delimitation does concern the mainland coast of
India. However, that coast faces a tightly knit group of islands, most

of which are only kilometers apart. The Maldives as an archipelago do

not bear any resemblance to the mi nor islands and cays of Colombia

adjacent to Nicaragua which are fa r apart and which do not in any
event constitute a single archipelago (See Figure 6-13).

6.119. The example cited by the Counter-Memorial at paragraph 9.48 again

bears no resemblance to a deli mitation between Nicaragua and
Colombia. The delimitation betw een Australia and New Caledonia

(France) is mostly effected betw een a number of small islands (See

Figure 6-14). The mainland coasts of both parties are a considerable

distance behind these islands. Altho ugh the geography of this case is

thus different from that involving the delimitation between Nicaragua
and Colombia, it does show that the mainland coasts of both States

have been treated broadly equally.

6.120. Another example given by Colombia is concerned with India and
Thailand 286(See Figure 6-15). The geography of that delimitation

again bears little resemblance with the present case. The delimitation

line is located between the Nicobar Islands of India and certain islands

of Thailand. Behind these Thai is lands is the mainland coast of
Thailand.

6.121. The Counter-Memorial ends its review of St ate practice with three

delimitations involving the Venezuelan island of Aves with the United

28CCM, Vol. I, p. 400, para. 9.49.

203 287
States, the Netherlands and France, respectively . These agreements

reflect the larger problem with dr awing legal conclusions from State
practice in delimitation: the delimitation agreements are normally not

reasoned out. There are economic, political, military and many other

reasons that lead to an intersta te boundary agreement that are not

spelled out in the agreements.

6.122. Colombia assumes that the treatment given to Aves in some

delimitations supports her case. Unfo rtunately, the analysis provided

by the Counter-Memorial is far from complete and further
information, which is readily available, indicates that the case of Aves

does not provide any support in law for the delimitation the Counter-

Memorial is proposing between Nicaragua and Colombia.

6.123. First of all, the Counter-Memorial refers to the 1978 delimitation
treaty between the United States and Venezuela. Two well-informed

commentators have observed in respect of this treaty:

“Another issue related to the treatment to be
given to Aves Island, a small island in the
eastern Caribbean sometimes used as a garrison

by Venezuelan military authorities and more
notable as sea turtle breeding grounds. The
limits of the fisheries jurisdiction provisionally
established by the United States gave full effect
to Aves despite its small size, and the United
States determined to maintain that position

when the Netherlands and Venezuela reached
their boundary settlement, which did not treat
Aves as a special circumstance. That
settlement, of course, did not and could not
prejudice U.S. rights and interests with respect

to this delimitation. However, as a political

28CCM, Vol. I, pp. 400-401, paras. 9.50-9.53.

204 matter, there was little to gain and potentially
much to lose in asserting a broader U.S.

boundary interest, particularly in light o288he
marginal resource interest in this area.”

6.124. Secondly, the Counter-Memorial refers to the 1978 treaty between the

Netherlands and Venezuela. The Counter-Memorial first of all
mistakenly asserts that large area s of exclusive economic zone and

continental shelf were accorded to Aves in the delimitation with

Aruba, Bonaire, Curacao and Saint Eustachius. As a matter of fact, the

delimitation with Aves only involves the small island of Saba. Still,

according Aves full weight against Saba would have been too

generous an approach in the legal determination of a maritime

boundary. An assessment of the releva nce of this delimitation in any
case is virtually impossible because it not only concerned the islands

of Aves and Saba, but also the Venezuelan mainland coast and

adjacent islands, and the Netherland s islands of Aruba, Curacao and

Bonaire. It is not known how these various aspects of the 1978 treaty

between the Netherlands and Venezuela, which also provides for a

specific navigational regime, tie in with each other. But there is no
question that all these elements entered into the negotiation.

6.125. Finally, the Counter-Memorial refers to the 1983 Treaty between

France and Venezuela 289. It is not known what inspired the conclusion

of that Treaty. What is certain is that there can be no doubt that giving

full weight to the small cay of Av es vis-à-vis the large islands of

288M.B. Feldman and D. Colson “The Maritime Boundaries of the United States” 75
(1981) American Journal of International Law pp. 729-763 at p.747 (footnote
omitted).
289CCM, Vol. I, p. 401, para. 9.53.

205 Guadeloupe and Dominica would not have been the outcome of a

delimitation effected by a third party.

6.126. The Counter-Memorial also ignores that several Caribbean States

have indicated that the use of Aves in the delimitation between

Venezuela and France, the Netherlands and the United States cannot
prejudice their rights. Antigua and Barbuda, Saint Kitts and Nevis and

Saint Vincent and the Grenadines ha ve indicated that they consider

that Aves should not receive any we ight in the delimitation between

these States and Venezuela in diplomatic notes that were distributed to

the States Parties to the 1982 Law of the Sea Convention. The

Secretary-General reported on the contents of these notes in his annual
290
report on oceans and law of the sea of the year 1997 . The view
expressed by Antigua and Barbuda, Saint Kitts and Nevis and Saint

Vincent and the Grenadines implies that Aves would be enclaved

within a 12-nautical-mile territoria l sea within the maritime zones of

the other coastal States of the Eastern Caribbean.

C.T HE ALIGNMENT OF SAN A NDRÉS AND PROVIDENCIA EXACERBATES

THE NEQUITABLE N ATURE OF COLOMBIA ’SEQUIDISTANCE LINE

6.127. The geographical relationship between the islands of San Andrés and

Providencia exacerbates the impact these minor features have on any

form of median line. San Andr és and Providencia are some 83

kilometers apart. As was discussed in Chapter V, this substantial
distance makes it appropriate for these small islands to be treated

separately and for each to be enclaved. Colombia’s approach, by

contrast, is to use them as separate basepoints in the construction of a

median line; this gives them the same effect as if they were two points

290See A/52/487, paras. 74-75 reproduced in NR, Vol. II, Annexes 1-4.

206 along an uninterrupted mainland coas t. This results from the north-

south alignment of the islands which runs parallel to and facing the
mainland coast of Nicaragua. In other words, in Colombia’s

methodology, the small islands of San Andrés and Providencia, which

have a coast facing Nicaragua of about 13 and 8 kilometers,

respectively, are given the same impact on the line of delimitation as a
section of the continuous mainla nd coast measuring more than 100

kilometers. This again illustrates that equidistance, as employed by

Colombia, is not an appropriate me thod for this delimitation. It leads

to treating two minor isolated islands in a similar fashion as a
hypothetical mainland coast which is more than 12 times the length of

Providencia and almost 7 times the length of San Andrés. And even

that hypothetical mainland coast wo uld be much shorter than the 450

kilometers of Nicaragua’s actual Caribbean Coast.

6.128. The alignment of the islands of San Andrés and Providencia in

relation to each other is similar to the relation of Serpents’ Island to

the Ukrainian mainland coast in the case concerning Maritime

Delimitation in the Black Sea (Romania v. Ukraine) . In its Judgment
the Court observed that:

“To count Serpents’ Island as a relevant part of

the coast would amount to grafting an
extraneous element onto Ukraine’s coastline;
the consequence would be a judicial
refashioning of geogr aphy, which neither the
law nor practice of maritime delimitation
authorizes” 29.

291Maritime Delimitation in the Black Sea (Romania v. Ukrain, Judgment of 3
February 2009, p. 45, para 149.

2076.129. In the case of San Andrés and Providencia there is not even a
mainland coast onto which the islands could be grafted. If

equidistance were to be used in this instance as a method of

delimitation, San Andrés and Providencia would, like Baron
Münchhausen, who pulled himself out of a swamp by his own hair,

escape being treated on their indi vidual merits because they are

allowed to pull each other out of their status as insignificant islands.

6.130. As shown, the relevant coast of Ni caragua “her mainland coast facing

the Caribbean Sea” measures 450 k ilometers, as compared to the

facing coasts of San Andrés and Providencia, which measure 13 and 8

kilometers, respectively. The ratio between the Nicaragua’s relevant
coast and that of San Andrés is 35:1. The ratio be tween Nicaragua’s

relevant coast and that of Providencia is more than 55:1. When the

two Colombian coasts are combined, the ratio is still more than 21:1
in Nicaragua’s favour. In view of these huge disparities in coastal

lengths, there obviously can be no equitable base for adjusting the

provisional delimitation line pr oposed by Nicaragua seaward beyond

the 12-nautical-mile limits of San Andrés and Providencia.

VII. Other Relevant Circumstances

6.131. The equitableness of the provisi onal delimitation lines proposed by

Nicaragua is confirmed by other consid erations as well. In particular,
the proposed delimitation would acco rd both Parties equitable access

to natural resources in the area. In addition, it would protect both

Parties’ legitimate security concerns.

208 A.E QUITABLE A CCESS TO NATURAL RESOURCES

6.132. As set forth in the Memorial, the jurispruden ce of the Court

recognizes that in certain situa tions equitable access to natural

resources will be taken into account as a relevant circumstance.

Colombia not only agrees, but argues that the putative equity of her

proposed median line is confirmed by this criterion. Colombia argues

first that there is no “particular stock of fish” near San Andrés and
Providencia that needs to be “taken into account to ensure that the

parties have equal access to such resource”,292and second that

“since mid-nineteenth century the population
of San Andrés and Providencia have relied for
their subsistence on the fisheries, turtle

hunting, guano exploitation and other food
resources in Roncador, Quitasueño, Serrana,
Serranilla and Bajo Nuevo” 29.

Colombia is wrong about the firs t point and the second does not

support her proposed median line.

6.133. With respect to Colombia’s argument that there are no valuable fish

stocks in the area, the truth is to the contrary. Since 1965, Nicaragua

has claimed a fishing zone both we st and east of San Andrés and

Providencia, extending 200 nautical miles from her mainland coast.

Her fishermen from that coast a nd from the Corn Islands, have

regularly sought to fish in these waters, but have been physically
blocked by Colombia from doing so east of the 82 ndmeridian, at great

cost to their livelihood s. Colombia’s proposed median line, like her

292CCM, Vol. I, p. 409, para. 9.75.
293Ibid, p. 410, para. 9.78.

209 nd
preferred 82 meridian, not only would not accord the Parties’

equitable access to these fisheries, it would deprive Nicaragua of any
access to these areas whatsoever.

6.134. Colombia’s assertion that the equity of her median line is confirmed

by the alleged fact that the populations of San Andrés and Providencia

have long relied on the waters around the other incidental maritime
features in the region is flaw ed in at least two respects. First,

Colombia offers no evidence whatso ever to support this claim. No

references of any kind are given. In fact the evidence provided by

Colombia points to the contrary co nclusion that these cays were, if
294
ever, very infrequently vi sited during the XIX century. Second,
even if it were true, the median line boundary Colombia advances

would not be necessary to protect th ese alleged interests. Colombia’s

median line lies substantially to the west of all of the features

Colombia mentions: Roncador (by 125 nautical miles), Serrana (by 95

nautical miles), Serranilla (by 125 nautical miles) and Bajo Nuevo (by
150 nautical miles). Assuming Colombia is correct that the resources

she seeks to protect are “in” th e features mentioned, such vast

expanses of maritime space are not necessary to safeguard her

interests.

6.135. In fact, the 3-nautical-mile enclav es Nicaragua proposes would fully

protect these interests (assuming, of course, they could be proven with

actual evidence). Colombia would no t only have sovereignty over the

features in question (and thus the resources “in” them) but she would

also have sole access to the resour ces within a substantial maritime
294
See CCM, Vol. II-A, pp. 136-149, Annex 27. Note of Colombian Chargé
d’Affaires in Washington protesting the activities of the United States over these
cays 20 years after the fact.

210 space around each. Granting Roncador Cay a 3-nautical-mile enclave,

for instance, would result in an award to Colombia of over 388 square
kilometers of maritime space in its immediate vicinity.

6.136. With respect to the natural resources located in the area in dispute it is

necessary to recall the special co nstraints Nicaragua confronts in

furnishing the Court with information on this question.

6.137. The first steps taken by Nicaragua in the exploration of the area

presently in dispute which is located east of the 82 ndmeridian

consisted in the grant of oil expl oration concessions in the 1960s.
295
These concessions were contested by Colombia and since that
period she has with her military fo rces effectively stopped Nicaragua

from pursuing any further activities east of that meridian, including

the exploration of the area.

6.138. Since Nicaragua’s claim is for a delimitation of the continental shelf,
the relevant resources of the area to be taken into account in a

delimitation would be generally those of the sea-bed and subsoil of the

submarine areas in dispute. Due to Colombia’s position and her use
nd
of force to impose the 82 meridian as a boundary, Nicaragua has

been unable to explore the area and t hus of being able to provide the
Court with a full study of the natural resources located on the

continental shelf.

6.139. The constraints imposed by Colomb ia have in fact impeded all

activities including the exploration and exploitation no t only of the
resources of the shelf itself but also those of the superjacent waters.

295
NM, Vol. I, pp. 153-154, para. 2.204

211 Any fishing activities by Nicaraguan vessels have been forcibly

stopped by Colombia and, thus, Nicara gua is also not in a position to

give a complete account of these other resources.

B. SECURITY C ONSIDERATIONS

6.140. Colombia also argues that the median line she proffers is equitable

because “the preponderance of secu rity interests in the area is
Colombian” 296. As support for this remarkable assertion, Colombia

claims that she has “been the sole Party to police the waters around

the Archipelago, to inte rdict illegal fishing as well as contraband in

the area and to carry out surveying operations” 29.

6.141. In the first instance, Nicaragua ob serves that, once again, Colombia

has introduced no evidence to support her assertions. No references of
any kind are offered. Colombia’s cont entions can be rejected for this

reason alone. Moreover, Nicaragua notes that “surveying operations”

have nothing to do security interests in any meaningful sense and thus

are irrelevant to the question at hand.

6.142. Even more fundamentally, Colombia seems to have forgotten that the
waters beyond the territ orial sea in the exclus ive economic zone are

not a zone of sovereignty. She ha s no right to exercise general

“police” powers or to interdict contraband unrelated to the specific

economic rights she might enjoy in the area. In addition it can be

noted that the regime of the excl usive economic zone leaves freedom

of navigation and othe r rights of communicatio n between the islands

29CCM, Vol. I, pp. 411-412, para. 9.81.
29Ibid, p. 411, para. 9.80.

212 and the Colombian mainland unaffected. Enclaving the islands thus in

no way affects the security interests of Colombia in that respect.

6.143. With respect to her assertion that she has been the “sole Party” to

interdict illegal fishing in the ar ea, two observations are in order.

First, as set forth in Nicaragua’s A pplication, much of the “illegal”
fishing Colombia has interdicted has been Nicaraguan, thereby

seriously imperiling the livelih ood of Nicaragua’s coastal
298
population . Second, if it is indeed true that Colombia has been the

only Party to interdict illegal fishing in the area, it is only because she
has resorted to the use of force to impermissibly exclude all

Nicaraguan vessels from much of the 200-nautical-mile fishing zone

and exclusive economic zone that Nicaragua has long claimed.

Colombia’s efforts to extract benefit from her own aggressive conduct

in this fashion cannot be sustained.

6.144. The question of security considerations is in any case more pertinent

from the point of view of the security interests of Nicaragua since

these islands and cays are located on her continental shelf and near her
mainland coast, whilst they are situated more than 300 nautical miles

from the mainland coast of Colombia. The implications of this

closeness of San Andrés and Provi dencia to the Nicaraguan mainland

was pointed out by the Sub-Commi ttee of the IMO when considering
a proposal by Colombia for imposing navigation restrictions in the

area of San Andrés and Providencia. The Sub-Committee indicated

298Application, pp. 5-6, para. 5.See also NM, Vol. II, pp. 151-179, Annexes 44-58.

213 that it was not appropriate to cons ider any of these proposals without
299
consulting with Nicaragua.

6.145. For all these reasons, Colombia ’s argument that security
considerations confirm the equity of her median line must be rejected.

6.146. In fact, the enclaving solution proposed by Nicaragua protects

Colombia’s security interests and appropriately ensures that Nicaragua

“contrôle les territoires maritimes situés en face de ses côtes et dans
300
leur voisinage” . Enclaving San Andrés and Providencia within a
12-nautical-mile territorial sea woul d still allow Colombia to, in her

words, exercise adequate “protect ion of the 70,000 inhabitants living

in the Archipelago”; and, assuming they are awarded to Colombia,

granting her other, uninhabited insu lar possessions a 3-nautical-mile

enclave would still enable her to prevent them from being used for the

illicit trafficking of drugs as claimed in the Counter-Memorial. By the

same token, recognizing the full scope of Nicaragua’s exclusive
economic zone entitlement would be tter enable her to adequately

perform the far larger task of pr otecting her 5.1 million people living

on the Central American mainland than artificially truncating her

exclusive economic zone, as proposed by Colombia, just 50 nautical

miles from her coast.

299See NR, Vol. II, Annex 15. Report of NAV 51 (Doc. NAV/51/19) and see p. 135,
para. 5.25 above.
300Case concerning the Delimitation of the Maritime Boundary between Guinea and
Guinea Bissau, Decision of 14 February 1985, RIAA, UN, Vol. XIX, p. 194, para.
124. (English Translation: “control the maritime territories situated opposite its
coasts and in their vicinity) ILM, Vol. XXV, N. 2, March 1986.

214 VIII. Concluding Remarks

6.147. For all the reasons discussed in the preceding sections, Colombia’s

delimitation methodology and claims are indefensible, and should be

rejected by the Court. Colombia cannot arbitr arily constrain the area
of delimitation to the narrow strip between San Andrés /Providencia in

the east, and Nicaragua’s coastal islands in the west. Rather, the area

of any exclusive economic zone to be delimited would have to extend

to the limits of Nicaragua’s excl usive economic zone entitlement
under the 1982 Law of the Sea Conv ention, which would extend in a

seaward direction for 200 nautical miles from the baselines from

which the breadth of her territori al sea is measured. None of

Colombia’s insular possessions within this area is of sufficient
geographic stature to merit base points or full weight in the

construction of a provisional eq uidistance line, rendering the

placement and drawing of such a line inappropriate.

6.148. The so-called median line Colombia offers as an alternative in Chapter

9 of her Counter-Memorial is no alternative at all. It is inconsistent

with the prevailing geographic circumstances and the jurisprudence
established by this Court and arbitral tribunals. First, as is indicated

by the jurisprudence, under Colombia ’s scenario, which ignores both

the Colombian and Nicaraguan mainland coasts, the equidistance line
does not provide an appropriate provisional delimitation line.

Secondly, Colombia’s equidistance line is drawn inappropriately using

minor coastal features as basepoints. The features in question do not

merit being considered in the construction of the provisional
delimitation line, much less being used as the very basis of the

delimitation itself. Thirdly, Colombia’s median line or any other

215 variation of the equidistance line produces results that are grossly
inequitable to Nicaragua, the relevant coast of which is more than 21

times longer than the relevant coast of Colombia’s islands.

6.149. Finally, even within the limited scen ario dealt with in this chapter

which would involve only an exclusive economic zone delimitation

between the mainland coast of Nicaragua and the islands claimed by

Colombia, the conclusion is that these islands should be enclaved and
not be used as a wall to enclose the extensive coast of Nicaragua.

Thus, the result would be the same whether the situation dealt with is

the delimitation of the continental shelves of both Parties (Chapters III

and V, above) or whether it is limited to a delimitation of the
exclusive economic zone in the area arbitrarily selected by Colombia.

216 CHAPTER VII

COLOMBIA’S INVOCATION OF THE 82 ND MERIDIAN AND

HER TREATIES WITH THIRD STATES

I. The 82° W Meridian Generally

7.1. The Protocol of Exchange of Ratifications of the 1928 Treaty on 5

May 1930 stated that:

“The undersigned, in virtue of the full powers

which have been granted to them and on the
instructions of their respective Governments,
hereby declare that the San Andrés and

Providencia Archipelago mentioned in the first
article of the said Treaty does not extend west
of the 82 nddegree of longitude west of
Greenwich” 30.

7.2. In her Counter-Memorial, Colombia does not expressly reiterate her

previous claim according to which there is “no doubt as to the

meaning of the 82° W meridian within the 1930 Protocol of Exchange

of Ratifications: a border, a dividing line of the waters in dispute, a

delimitation, a demarcation of the dividing line ( límite, línea divisoria
de las aguas en disputa, delimit ación, demarcación de la linea

divisoria)– in other words: a maritime boundary” 302. However, while

declaring herself “mindful” of the Court’s position 303, Colombia

promptly disregards it :04

301NM, Vol. II, pp. 55-59, Annex 19.
302CPO, p. 92, para. 2.41.
303CCM, Vol. I, p. 364, para. 8.58.
304After the 2007 Judgment of the Court Colombia continues to impose the 82

meridian. See above Intro. pp. 15-19, paras. 34-43.

217 - on the one hand, she affirms that:

“… the legal significance of the 82° W
meridian, as far as the territorial element of the

dispute is concerned, lies in the fact that it
plays a role with regard to the scope and
composition of the rest of the San Andrés
Archipelago: specifically it fixes the limit of
305
the Archipelago” .

- and, on the other hand, she:

“considers that the 82°W meridian constitutes
an important factor to be taken into account in
assessing where an equitable delimitation
lies”306. This twisted formula is repeated
307
several times in the Counter-Memorial .

7.3. It is necessary to reiterate that the 82 ndmeridian does not constitute a

border or dividing line or limit of the waters between Colombia and

Nicaragua. In the first place, the limit imposed by the Protocol is not a

border but only a line fixing a maximum limit westward of the

Archipelago as the Court clearly st ated in paragraphs 115 and 120 of

the Judgment of 13 December 2007:

“The Court considers that, contrary to

Colombia’s claims, the terms of the Protocol,
in their plain and ordinary meaning, cannot be
interpreted as effecting a delimitation of the
maritime boundary between Colombia and

Nicaragua. That language is more consistent

30CCM, Vol. I, p. 7, para. 1.12.
30Ibid, p. 365, para. 8.58.
30Cf. CCM, Vol. I, p. 370, para. 8.76: “The 82° W meridian limit is therefore an
element of essential importance for establishing a maritime delimitation between the
San Andrés Archipelago and Nicaragua…”; s ee also, Vol. I, p. 377, para. 8.93; p.
379, para. 8.94 (5); pp. 423-424, para. 10.16.

218 with the contention that the provision in the
Protocol was intended to fix the western limit
nd
of the San Andrés Archipelago at the 82
meridian.”

“… after examining the arguments presented

by the Parties and the material submitted to it,
the Court concludes th at the 1928 Treaty and
1930 Protocol did not effect a general
delimitation of the maritime boundary between

Colombia and Nicaragua. … Since the dispute
concerning maritime delimitation has not been
settled by the 1928 Treaty and 1930 Protocol
within the meaning of Article VI of the Pact of

Bogotá, the Court has308risdiction under Article
XXXI of the Pact.”

7.4. Secondly, a border must impose a limit on both parties and it is clear

from the text of the Protocol that the limit is not imposed on

Nicaragua but only on the “Archipe lago”. The limit imposed on the

Archipelago simply means that there are no parts of this
“Archipelago” located west of the 82 ndmeridian; but it does not set

any limit to Nicaraguan territories east of that meridian.

II. The 82° W Meridian and the Maritime Delimitation

7.5. Probably conscious of the incompatibil ity of her position with that of

the Court in its 2007 Judgment 309, Colombia tries hard to by-pass the

latter by reintroducing a major role for the 82 ndmeridian without

formally describing it as the border. Contrary to her insistent position

during the Preliminary Objections phase, she now accepts that “the

Court held that the 1928 Treaty a nd the 1930 Protocol did not in

308 Territorial and Maritime Dispute ( Nicaragua v. Colombia), Preliminary
Objections, Judgment of 13 December 2007, pp. 34-36, paras. 115-120.
309See above, pp. 218-219, para. 7.3.

219 themselves effect a general delimitation of the maritime boundary.

But”, she immediately adds, “as will be seen, this does not entail that

the 82° W meridian has no role to play in the delimitation” 31. And

indeed she confers to the meridian a very preeminent role in the
311
delimitation .

7.6. In a rather sibylline formula, Colombia asserts that:

“[i]n case the 82° W meridian is considered as
a limit between the archipelagos, it inevitably
constitutes a ‘limit’ that must be taken into

account in a delimitation of the maritime 312
spaces that those archipelagos generate.”

But this neglects the fact that, as shown above 313, the limit in question

is only a limit to the islands belonging to the “San Andrés

Archipelago” and not to those which belong to Nicaragua. It is

therefore not the 82 ndmeridian which must be “taken into account”,

but the individual islands that potentially generate those “maritime

spaces”.

7.7. In reality, Colombia goes much furt her than just “taking [the 82° W

meridian] into account” in the way she uses it to define the “San

Andrés Archipelago”. Under the guise of “taking it into account” (and

in a rather disorderly manner), she:

- uses it as a limit between the respective maritime areas

appertaining to each Party;

310
311CM, Vol. I, p. 8, para. 1.14.
312ee above, pp. 217-218, para. 7.2 and fn. 307.
313CM, Vol. I, pp. 369-370, para. 8.73.
See above p. 219, para. 7.4.

220 - considers that it constitutes a “special circumstance” which

should be taken into considera tion for drawing the maritime

border; and

- considers that it “has an important role to play in determining
314
where an equitable delimitation lies ...” .

nd
7.8. In other words, Colombia attempts the tour de force of using the 82

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 Archipelago.

A. THE M ERIDIAN AS LINE OF D ELIMITATION

7.9. Colombia alleges that “the 1928/1930 Treaty…expressly recognized

Colombian sovereignty over the Archipelago, which includes all
maritime features and areas to the east of the meridian 82º W” 31; and

she then states further that the 82º W meridian “divided” the maritime

areas between the Parties316. This statement is doubly incorrect. In the

first place, the 1930 Protocol does not recognize Colombian

sovereignty over all maritime “features” east of the 82ndmeridian. The

protocol only and very clearly sets a limit westward to all the

“features” of the Archipelago and does not even hint at a limit for

Nicaraguan rights east of that meridian. Secondly, the word “areas”

implies that, in spite of the Court’s dismissal of her claim in this

respect, Colombia persists in her fundamental mistake in considering

that the meridian is a “division line”, which allocates maritime areas,

while in reality it only concerns the islands themselves.

314
315CM, Vol. I, p. 377, para. 8.93.
316bid, p. 9, para. 1.17 (emphasis added by Nicaragua).
Ibid, p. 373, (v); see also e.g.: p. 278, para. 5.71 (3).

2217.10. In the same vein, it must be noted that, contrary to Colombia’s

assertion, there is absolutely no di fficulty in seeing “how Nicaragua’s

recognition of Colombia’s ‘full and entire’ sovereignty over an

Archipelago that lies east of the 82° W meridian is compatible with
Nicaragua’s current attempt to argue that it possesses sovereign rights

(continental shelf and exclusive eco nomic zone) that not only extend

east of the 82° W meridian, but also swallow up and surround all of
317
Colombia’s islands comprising the Archipelago” . Once one accepts

(as must be the case) that the meridian simply establishes the western

maximum extension of the Archipel ago, it follows not only that there
are Nicaraguan maritime areas east of the 82 ndmeridian but also

territories, islands and cays that are not part of the Archipelago. With

respect to delimitation it also follows and can –and must– be admitted

that all around the island of this Archipelago the usual rules of

delimitation apply. The respective rights of the Parties must be
nd
established accordingly and the 82 meridian has no more role to play

in that regard.

B.T HE M ERIDIAN AS PART OF THE EFFECTIVITÉS

7.11. While hardly consistent with her continued claim that the meridian has

realized a sharing of the respective maritime areas of the Parties,

Colombia in a brief but mo st obscure passage of her Counter-

Memorial, lists “The Conduct of the Pa rties and the 82º W Meridian”

among the “relevant circumstances” to be taken into consideration for
318
the establishment of the delimitation line . The general explanation
to this would be that, “[e]ven if the 82º W meridian is not a line of

maritime delimitation per se, the circumstances in which it was

317CCM, Vol. I, p. 366, para. 8.62.
318Ibid, pp. 404-405, paras. 9.60-9.64.

222 agreed, and the Parties’ mutual respect of it in practice over a
considerable period of time, represen t key factors to be considered in

relation to a equidistance based boundary arrived at independently on

the basis of contemporary international law.” 319

7.12. Moreover, invoking Tunisia-Libya 32, Colombia points to “a total lack

of any Nicaraguan presence or cla im east of the 82º W meridian for

some 40 years after the 1928/ 1930 Treaty was concluded”, 321 which

would contrast with her own condu ct in the same zone during the

same period 322. These robust assertions call for three remarks.

7.13. First, it is important to distinguish the facts in the Tunisia-Libya case

from those of the present case. The line adopted by Tunisia and Libya

“was drawn by each of the two Stat es separately, Tunisia being the

first to do so, for purposes of delimiting the eastward and westward
323
boundaries of petroleum concessions.” By contrast, in the present

case, the 82º meridian was not adopted as a line related to activities in

the continental shelf in the 1928/1930s, but as a limit to the

archipelago that was the object of the 1928 Treaty. Therefore, it

cannot be considered as a releva nt circumstance in delimiting a

maritime boundary; unlike the situation in Tunisa/Libya there is no

evidence of the Parties’ mutual an d “de facto respect for a line drawn
324
from the land frontier” . Clearly these differences between the two

319
320CM, Vol. I, p. 404, para. 9.60.
See CCM, Vol. I, p. 374, para. 8.87.
32CCM, Vol, I, p. 375, para. 8.88.
32Ibid, pp. 371-373, paras. 8.78-8.84.
323Continental Shelf (Tunisia/Libya Arab Jamahiriya ), Judgment, I.C.J. Reports
1982, p. 84, para 118.
32Ibid. p. 84, para. 119.

223 cases preclude Colombia from relying on a case which, by no means,

can be considered a precedent.

7.14. Second, as the Court recalled in its Judgment of 8 October 2007 in the

case concerning Territorial and Maritime Dispute Between Nicaragua

and Honduras in the Caribbean Sea:

“Evidence of a tacit legal agreement must be
compelling. The establis hment of a permanent
maritime boundary is a matter of grave
importance and agreement is not easily to be

presumed. A de facto line might in certain
circumstances correspond to the existence of an
agreed legal boundary or might be more in the

nature of a provisional line or of a line for a
specific, limited purpose, such as sharing a
scarce resource. Even if there had been a
provisional line found convenient for a period

of time, this is to be dist325uished from an
international boundary.”

7.15. Third, in the present circumstances, it is obvious that no such line has

ever been recognized in practice or even contemplated. And it is

clearly not true that “Nicaragua fo r nearly 40 years, and Colombia

until the present time, fully respected the 82º W meridian in practice
326
as the limit of the exercise of their respective jurisdictions.” :

- it was not until 1969 that Colombia began to claim sovereignty

over the waters situated east of the 82 nd meridian 32. Her first

325
Territorial and Maritime Dispute ( Nicaragua v. Honduras), Judgment of 8
October 2007, p. 69, para. 253; see also:Maritime Delimitation in the Black Sea
(Romania v. Ukraine), Judgment of 3 February 2009, p. 59, para. 198.
326CCM, Vol. I, p. 371, para. 8.77.
327See NM, Vol. I, p. 153, para. 2.203.

224 claim in this respect was made on 4 June of that year 328and it

immediately met a firm opposition by Nicaragua 32;

- all subsequent attempts by Colombia to establish her claimed

rights through faits accomplis, were, similarly firmly opposed

by Nicaragua 330;

- Colombia’s most authoritative voices repeatedly recognized that

the respective maritime areas between the Parties were not
331
delimited.

7.16. Although Colombia attempts to portray a consistent exercise of
nd
sovereignty in the areas east of the 82 meridian since the 1930s,

there is no evidence that Colombia ever claimed or exercised

exclusive sovereignty east of that meridian before 1969 as indicated

above. What exists since that date is evidence th at the Colombian

military forces have imposed unlaw ful restrictions on Nicaragua’s
nd
exercise of her own sovereignty east of the 82 meridian.

7.17. Effectivités or State practice can have a role to play in territorial

delimitation. Thus, the Chamber, in Burkina Faso/Mali, considered

that effectivités must be taken into consideration when they do “not

co-exist with any legal title” 332. However, these rules have not been

generally accepted in cases of ma ritime delimitation; in practice,

effectivités have not had a significant influence on maritime

delimitation. The Chamber, in Burkina Faso/Mali emphasized that

“the process by which a court determines the line of a land boundary

32NM, Vol. II, pp. 101-105, Annex 28; see NM, Vol. I, p. 154, para. 2.204.
32See the Nicaraguan Note verbale of 22 September 1969 (NM, Vol. II, p. 154,
Annex 29); see NM, Vol. I, pp. 154-155, para. 2.204 and pp. 157-158, para. 2.212.
33See NM, Vol. I, pp. 157-163, paras. 2.212-2.223.
33See ibid, pp. 155-157, paras. 2.206-2.210.
332
Frontier Dispute Judgment, I.C.J. Reports 1986, p. 587, para. 65.

225 between two States can be clearly distinguished from the process by
which it identifies the principles and rules applicable to the

delimitation of the continental shelf” 333.

7.18. Exercise of sovereign activities in maritime areas cannot be taken into

account for delimitation purposes. In fact, both the Geneva

Convention on the Continental Sh elf and the 1982 Law of the Sea

Convention provide that “[t]he righ ts of the coastal State over the

continental shelf do not depe nd on occupation, effective or

notional” 334. The Court has endorsed the c ontent of those conventions

and affirmed in several cases that “[t]he delimitation of sea areas has

always an international aspect; it cannot be dependent merely upon the

will of the coastal State as expressed in its municipal law” 335.

7.19. In this context, Nicaragua’s supposed lack of exercise of sovereignty
nd
east of the 82 meridian must not be held against her. The Colombian
nd
claim that the 82 meridian was a line of delimitation was not only a

verbal claim but an imposition by fo rce. The first incident highlights

this situation; it concerned State practice in relation to oil.

7.20. In 1966, Nicaragua granted several exploration concessions in her
nd
continental shelf that covered areas east of the 82 meridian. This

occasioned the first protest by Colombia by note dated 4 June 1969,

333
334Frontier Dispute Judgment, I.C.J. Reports 1986, p. 578, para. 47.
Article 2 (3) of the Geneva Convention on the Continental Shelf ( UNTS, Vol.
335, p. 315); and Art. 77 (3) of tth UNCLOS (UNTS, Vol. 1834, p. 36).
Fisheries case, Judgment of 18 December 1951: I.C.J. Reports 1951, p. 132;
Fisheries Jurisdiction (United Kingdom v. Iceland), Merits, I.C.J. Reports 1974 , p.
22, para. 49; Fisheries Jurisdiction (Federal Republic of Germany v. Iceland),
Merits, I.C.J. Reports 1974 , p. 191, para. 41. See also Continental Shelf
(Tunisia/Libyan Arab Jamahiriya), Judgment, I.C.J. Reports 1982 , pp. 66-67, para.
87.

226 and her first assertion that this meridian was a maritime boundary to
which Nicaragua firmly replied contradicting this assertion 33. Since

then Colombia has imposed that limit by use of force or the threat of

force as can be seen in the multiple incidents of captures and

harassment of Nicaraguan vessels navigating or attempting to navigate

east of the 82ndmeridian .37

C.T HE ROLE OF THE M ERIDIAN IN A SSESSING THE E QUITABLE

C HARACTER OF THE L INE

7.21. For good measure, Colombia stresses, in several parts of her Counter-
Memorial, that the 82 nd meridian would be of particular importance in

assessing the equitable char acter of the delimitation line 338. It is

indeed extremely difficult to follow this reasoning from a legal

perspective since Colombia confuses

- the distinct, and now we ll defined stages of the

procedure to be followed for the delimitation of

maritime areas, as so clearly described by the Court in

its Judgment of 3 February 2009 in the case concerning

Maritime Delimitation in the Black Sea 33; and

- general considerations of equity and good faith, and

even more obscure cons iderations equating the

meridian with the equidistance line.

336
See generally NM, Vol. I, pp. 153-154, para. 2.204 and Vol. II, pp. 101-110,
Annexes 28 and 29.
337See NM, Vol. I, pp. 159-162, paras. 2.215-2.and above Intro. pp. 15-19,
paras. 34-43.
338See above, fn. 306 and 307.
339See e.g. Maritime Delimitation in the Black Sea (Romania v. Ukraine), Judgment
of 3 February 2009, pp. 37 and 39, paras. 115-122.

2277.22. Thus, in paragraph 8.91 of her Counter-Memorial, Colombia asserts

that:

“It was Nicaragua who, in 1930, demanded and

obtained the establishment of a limit along the
82° W meridian. It woul d be contrary to a
delimitation carried out in accordance with
equitable principles for Nicaragua now to be
permitted to acquire rights that it had never

claimed to the east, or on ‘the wrong side’, of
the 82° W meridian limit that Nicaragua itself
demanded.” 340

7.23. Here the argument seems to relate to the behaviour of Nicaragua. It

has nothing to do with the law of maritime delimitation and simply

implies that Nicaragua would be estopped (in the very general
meaning of the word) from claiming areas beyond the delimitation

line since she, herself, would have requested such a delimitation. This

begs the question. As shown above, it cannot be seriously sustained
nd
that the 82 meridian constitutes such a line, much less that Nicaragua

ever sought this line as a line of delimitation.

7.24. Even more disconcerting is the assertion made by Colombia in

Chapter 9 of her Counter-Memorial:

“While the two lines [the equidistance line and
the 82° W meridian] do not coincide – a fact
that is not surprising – they do lie in the same
general area between the San Andrés
Archipelago and the Nicaraguan islands. Both

340
CCM, Vol. I, p. 376, para. 8.91.

228 lines follow the same general north-south
orientation.” 341

And

“The result reflects a certain balance in the

situation that is broadly consistent with the past
conduct of the Parties relating to their maritime
presence and activities in the area of concern.
While the 82º W meridian may not represent a

delimited boundary in and of itself, an
equidistance based delimitation does not depart
disproportionately from the line and thus gives
it due effect as a relevant circumstance to be

taken in342account in ar riving at an equitable
result.”

7.25. Thus, it would appear that the meridian – which, as clearly established

by the Court, does not constitute “a general delimitation of the
343
maritime boundary between Colombia and Nicaragua” and only

concerns the extension of the “S an Andrés Archipelago” – would
confirm the equitable character of the provisional equidistance

boundary drawn between all the islands in the region.

7.26. This is pure fantasy. As explained above, the 82 ndmeridian has

absolutely no role to play in the delimitation of the respective

maritime areas over which the Parties have sovereignty or sovereign

rights, and does not reflect any voluntary practice by Nicaragua. Quite

the contrary, Colombia has imposed this limit by force and with a
straight face now offers it as a pa rameter for judging the equity of the

result of a delimitation.

341CCM, Vol. I, p. 404 , para. 9.61.
342Ibid, p. 405, para. 9.64.
343 Territorial and Maritime Dispute ( Nicaragua v . Colombia), Preliminary
Objections, Judgment of 13 December 2007, p. 36, para. 120.

229 nd
III. The 82 Meridian and Colombia’s Delimitation Treaties with

Third States

7.27. The Counter-Memorial submits that it “is striking that there is a

considerable body of State practic e in the form of bilateral

delimitation agreements along the limits of the area to be delimited in

the present case involving all of the other riparian States in the
344
immediate region” . What is really striking is the feigned surprise of
Colombia about this considerab le body of State practice since

Colombia herself was involved in the conclusion of these bilateral

treaties, which form part of her policy to hem in Nicaragua’s maritime

zones by the 82º W meridian.

7.28. Also striking is how Colombia completely ignores the jurisprudence

of the Court and arbitral tribunals, which have consistently held that

such practice is not relevant for the delimitation of maritime

boundaries with another St ate that is not a part y to these bilateral

treaties. The latest case in which a similar argument on the relevance
of regional practice was made will not have escaped the attention of

Colombia. It was made by Hondur as in the case concerning

Territorial and Maritime Dispute between Nicaragua and Honduras

in the Caribbean Sea ( Nicaragua v. Honduras). In this regard, in its

Judgment of 8 October 2007 the Court did not attach any significance
to that argument of Honduras. The only point the Court considered in

relation to this bilateral practice of third States was whether the

344
CCM, Vol. I, p. 363, para. 8.56.

230 interest of third States would be affected by the delimitation line the

Court adopted. 345The Court concluded that:

“The Court has thus considered certain
interests of third States which result from some
bilateral treaties betw een countries in the

region and which may be of possible relevance
to the limits to the maritime boundary drawn
between Nicaragua and Honduras. The Court
adds that its consideration of these interests is

without prejudice to any other legitimate third
party interests which may also exist in the area.
319. The Court may accordingly, without
specifying a precise endpoint, delimit the

maritime boundaryndnd state that it extends
beyond the 82 meridian without affecting
third-State rights.”346

7.29. The reference to the 82 nd meridian in these paragraphs is concerned

with the same line which Colombia has tried to impose unilaterally on

Nicaragua as a maritime boundary. Colombia and Honduras had used

this meridian in their 1986 delim itation treaty. The Judgment of the

Court not only rejected that this bilateral treaty had any relevance for

the delimitation between Nicaragua and Honduras, but the Court also

found that this bilateral bounda ry extended eastward beyond the
meridian of 82˚ W.

345Territorial and Maritime Dispute between Nicaragua and Honduras in the
Caribbean Sea (Nicaragua v. Honduras), Judgment of 8 October 2007 , pp. 87-90,
paras. 312-319.
346Ibid, p. 90, para. 319.

231 IV. Conclusions

7.30. If any pertinence for these procee dings is to be drawn from the
position of the Parties with respect to the 82 ndmeridian, it would be

the following:

i. Nicaragua has never accepted this meridian as a border line or

a limit to her rights over maritime areas or features lying to the
east of it.

ii. Colombia has attempted to impose this meridian as a border or

limit to Nicaragua’s sovereignty by use of force or threat of

force since 1969.

iii. In its Judgment of 13 December 2007 the Court considered
that this meridian did not constitute a line of delimitation.

iv. Nevertheless, since the Court’s Judgment Colombia has

continued physically enforcing the 82 nd meridian as her

maritime border with Nicaragua.

v. The conclusion from the above f acts should be that it would
discredit the sacrosanct principl e of good faith to attribute to

Colombia one centimetre of maritime area west of the 82 nd

meridian which has constituted her extreme claim and which

she has upheld by force since 1969. Although the principle of

estoppel is not directly appli cable to this situation since
Nicaragua has never recognized or accepted the 82 ndmeridian

as a line of delimitation, the more important and overriding

principle of good faith is applicable. In this respect, it is

undeniable that Colombia has drawn benefit from interpreting
nd
the 82 meridian as a line of de limitation by exploiting the
resources in the area and prohi biting and stopping Nicaragua

232 from doing so and, hence, should be prevented from obtaining
advantage from this illicit conduct.

vi. Finally, the mainstay of any mar itime delimitation is that the

result should be equitable. An equitable result can only be the
outcome of an exercise of good faith. If any limit were decided

that granted to Colombia areas beyond her most extreme

claims, which have been imposed on Nicaragua by force for

half a century, the result woul d certainly be disconcerting for
all Nicaraguans who expect an equitable solution.

233 DECLARATION

1. Nicaragua’s Application containe d a reservation of her rights

expressed as follows:

“Whilst the principal purpose of this
Application is to obtain declarations
concerning title and the determination of

maritime boundaries, the Government of
Nicaragua reserves the right to claim
compensation for elements of unjust
enrichment consequent upon Colombian

possession of the Island s of San Andrés and
Providencia as well as the keys and maritime
spaces up to the 82 meridian, in the absence of
lawful title. The Government of Nicaragua also
reserves the right to claim compensation for

interference with fishing vessels of Nicaraguan
nationality or vessels licensed by
Nicaragua.” 347

2. In her Memorial of 28 April 2003, Nicaragua described the methods

used by Colombia to block her from the use of the maritime areas east
nd
of the 82 meridian. A list of incidents was given and documented of

the many occasions in which Colombian naval patrols had harassed or
nd
captured Nicaraguan vessels th at ventured east of the 82 meridian
348
and some vessels that navigated n ear but not across this meridian.
This list of incidents was brought up to date when Nicaragua filed her

Written Statement to the Preliminary Objections on 26 January 2004.

In this Written Statement Nicaragua pointed out that since the filing of

347Nicaraguan Application, p. 8, para. 9
348NM, Vol. I, pp. 159-162, paras. 2.215-2.222.

235 the case the threats by Colombia made at the highest level had

increased. 349

3. Section IV of the Introduction to this Reply explains that in spite of

the Judgment of 13 December 2007 in which the Court considered that
nd
the 82 meridian is not a line of delimitation of the Parties’ respective

maritime spaces, Colombia continues to enforce it as a maritime
boundary against Nicaraguan vessels.

4. The Colombian authorities have publicly confirmed that they are

enforcing this meridian as a boundar y, and that they will continue to

do so. The clearest expression of this is contained in the letter sent by

Colombia to the Secretary General of the United Nations on 29

February 2008 in which is stated th at Colombia will “continue to take

routine measures designed to ensure that any fishing vessel that
nd
engages in activities to the east of that line (the 82 meridian) has
350
been licensed to do so by the competent Colombian authorities.”

5. At the present stage of the procee dings it is neither necessary nor

appropriate moment in which to enter into a detailed account of the

damage caused to Nicaragua by these Colombian “routine measures”

that are in fact a blockade against Nicaragua’s access to the natural
nd
resources located east of the 82 meridian. What is undisputed is that

Colombia since the late 1960s has prevented Nicaragua from granting
nd
concessions of exploration of pe troleum in areas east of the 82

meridian and has captured and hara ssed all Nicaraguan vessels that

349NWS, pp. 6-9, paras. 12-17.
350NR, Vol. II, Annex 6.

236 attempted to go about their lawful business to the east of this
meridian.

6. The maritime areas that are being i llicitly used by Colombia for her

unjust enrichment and to the de triment of Nicaragua extend over
100,000 square kilometers of maritime spaces.

7. These Colombian activities, especially with their continuing character

after the Judgment of the Court of 13 December 2007 , are in manifest
violation of Nicaragua’s rights to access and use her natural resources

located east of the 82 ndmeridian and an unjust enrichment of

Colombia by her unilateral and unlawful possession of the areas

located east of that meridian.

8. After due consideration of the impli cations of these violations having
flagrantly continued after the Judg ment of the Court, Nicaragua has

decided that it is necessary for the maintenance and respect of the rule

of law to request a declaration from the Court that:

- Colombia is not acting in acco rdance with her obligations

under international law by preven ting and otherwise hindering

Nicaragua from accessing and disposing of her natural
nd
resources to the east of the 82 meridian;
- Colombia immediately cease al l these activities which

constitute violations of Nicaragua’s rights;

- Colombia is under an obligati on to make reparation for the

damage and injuries caused to Nicaragua by the breaches of
the obligations referred to above; and,

237- The amount of this reparation shall be determined in a
subsequent phase of these proceedings.

238 SUBMISSIONS

Having regard to the legal considerations and evidence set forth in this
Reply:

I. May it please the Court to adjudge and declare that:

(1) The Republic of Nicaragua has sovereignty over all maritime

features off her Caribbean coast not proven to be part of the
“San Andrés Archipelago” and in particular the following

cays: the Cayos de Albuquerque; the Cayos del Este Sudeste;

the Cay of Roncador; North Cay, Southwest Cay and any other

cays on the bank of Serrana; Ea st Cay, Beacon Cay and any
other cays on the bank of Serranilla; and Low Cay and any

other cays on the bank of Bajo Nuevo.

(2) 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.

(3) The appropriate form of delimita tion, within the geographical
and legal framework constituted by the mainland coasts of

Nicaragua and Colombia, is a continental shelf boundary with

the following coordinates:

1. 13º 33′ 18″N 76º ′ 53″W

2. 13º 31′ 12″N 76º 33′ 47″W;

3. 13º 08′ 33″N 77º 00′ 33″W;

4. 12º 49′ 52″N 77º 13′ 14″W;
5. 12º 30′ 36″N 77º 19′ 49″W;

239 6. 12º 11′ 00″N 77º 25′ 14″W;
7. 11º 43′ 38″N 77º 30′ 33″W;

8. 11º 38′ 40″N 77º 32′ 19″W;

9. 11º 34′ 05″N 77º 35′ 55″W

(All coordinates are referred to WGS84).

(4) The islands of San Andrés and Providencia (Santa Catalina) be

enclaved and accorded a maritime entitlement of twelve

nautical miles, this being th e appropriate equitable solution
justified by the geographical and legal framework.

(5) The equitable solution for any cay , that might be found to be

Colombian, is to delimit a maritime boundary by drawing a 3-

nautical-mile enclave around them.

II. Further, the Court is requested to adjudge and declare that:

- Colombia is not acting in acco rdance with her obligations

under international law by stopping and otherwise hindering
Nicaragua from accessing and disposing of her natural

resources to the east of the 82d meridian;

- Colombia immediately cease al l these activities which
constitute violations of Nicaragua’s rights;

- Colombia is under an obligati on to make reparation for the

damage and injuries caused to Nicaragua by the breaches of
the obligations referred to above; and,

240- The amount of this reparation shall be determined in a

subsequent phase of these proceedings.

The Hague, 18 September 2009.

Carlos J. ARGÜELLO GÓMEZ
Agent of the Republic of Nicaragua

241 LIST OF ANNEXES

(VOLUME II, PART I)

DIPLOMATIC NOTES ...........................................................................................1

ANNEX 1

Note N E.D. 3/20 from the Prime Minister of Antigua and Barbuda to the
United Nations Secretary-General, 19 June 1997.............................................3

ANNEX 2

Note from the Permanent Mission of St. Kitts and Nevis to the United Nations

to the United Nations Secretary-General, 16 July 1997....................................5
ANNEX 3

Note from the Minister of Foreign Affairs, Tourism and Information of Saint

Vincent and The Grenadines to the United Nations Secretary-General, 7
August 1997 ....................................................................................................... 7

ANNEX 4

Diplomatic Note N. MRE/DM/152/02/08. From the Minister for Foreign
Affairs of Nicaragua to the Minister for Foreign Affairs of Colombia, 12

February 2008 ................................................................................................... 9

ANNEX 5
Letter (A/62/697) from the President of Nicaragua to the United Nations

Secretary-General, 14 February 2008............................................................11

ANNEX 6
Letter (A/62/733) from the Colombian Minister for Foreign Affairs replying

the note sent to the United Nations Secretary General by the President of

Nicaragua, 25 February 2008 ......................................................................... 15
ANNEX 7

Diplomatic Note N. MRE/DM-DGAJST/ghw/476/05/08. From the Minister for

Foreign Affairs of Nicaragua to the Minister for Foreign Affairs of Colombia,
20 May 2008 .................................................................................................... 19

ANNEX 8

Diplomatic Note N. MRE/DSF/CAM N. 33703. From the Colombian Vice-
Minister for Foreign Affairs to the Nicaraguan Minister for Foreign Affairs of,

9 July 2008......................................................................................................21

243 ANNEX 9
Diplomatic Note N. DSF.CCF.66624. From the Colombian Ministry of

Foreign Affairs of to the Nicaraguan Embassy to Bogotá, Colombia. 14

January 2009...................................................................................................23
ANNEX 10

Diplomatic Note from the Nicaraguan Embassy to Bogotá, Colombia to the

Colombian Ministry of Foreign Affairs. 12 February 2009............................25

PRESS COMMUNIQUÉ .......................................................................................27

ANNEX 11

Press Communiqué from the Ministry of Foreign Affairs of Colombia, 28

January 2008...................................................................................................29

SURVEYS AND REPORTS..................................................................................31

ANNEX 12

Bahamas, Yucatán E.C.: Honduras gulf; Mosquito Coast, islands & banks

adjacent; Jamaica; St. Domingo; Currents Positions by Capt. Richard Owen

R.N. H.M. Ships Blossom & Thunder 1830-7..................................................33
ANNEX 13

West India Pilot, Vol. I. Compiled by Captain E. Barnett, R. N. London, 1861

......................................................................................................................... 37
ANNEX 14

Report by an official of the Colombian Ministry of Foreign Affairs regarding

the cays of Roncador, Quitasueño and Serrana in the Archipelago of San
Andrés, 31 August 1937 ..................................................................................41

ANNEX 15

Report to the Maritime Safety Committee. 4 July 2005 (Doc. NAV/51/19) .....45

TECHNICAL DATA..............................................................................................47

ANNEX 16

Coordinates defining the outer limits of Nicaragua’s continental shelf..........49

ANNEX 17

Coordinates defining the outer limits of Colombia’s continental shelf...........51
ANNEX 18

Technical information related toNicaragua’s continental shelf.....................53

244 LIST OF FIGURES
(VOLUME II, PART II)

FIGURE TITLEPAGE

FIGURE 1 Regional bathymetry of the South West 1
Caribbean

FIGURE 1-1 O’Neille’s description of the Islands 2

FIGURE 1-2 Islands and cays off the mainland coast of 3
Nicaragua

FIGURE 3-1 The delimitation area according to Nicaragu4

FIGURE 3-2 Regional geomorphology of the South West 5
Caribbean

FIGURE 3-3 Regional geomorphology of the South West 6
Caribbean – perspective view

FIGURE 3-4 Bathymetric profile across the Nicaraguan R7se
and Colombian basin

FIGURE 3-5 Geological structure of the Caribbean 8

FIGURE 3-6 Example of one of the Nicaraguan foot of sl9pe
picks (FOS 3)

FIGURE 3-7 Construction details of the outer limit of 10e
Nicaraguan continental shelf

FIGURE 3-8 Example foot of slope and sediment thicknes11
calculations for the Colombian continental
margin

FIGURE 3-9 Outer limit of Colombian continental shelf 12

FIGURE 3-10 Area of overlapping continental margins 13

FIGURE 3-11 Delimitation of the continental shelf 14

245FIGURE 4-1 The insignificance of the “San Andrés 15
Archipelago”

FIGURE 4-2 Absence of a low-water line on Quitasueño 16
according to Colombian official charts

FIGURE 4-3 Low-water line and 12-nautical-mile territoria17

sea on Serranilla according to Colombian
official chart

FIGURE 4-4 Low-water line and 12-nautical-mile territoria18
sea on Bajo Nuevo according to Colombian
official chart

FIGURE 4-5 Nicaragua’s potential exclusive economic zone 19
entitlement

FIGURE 5-1 12-nautical-mile enclaves for Colombian 20
Islands

FIGURE 5-2 12 and 3-nautical-mile enclaves for Colombian 21
Islands

FIGURE 5-3 The Channel Islands case: Consequences of 22
full-effect for the Channel Islands

FIGURE 6-1 The insignificance of the “San Andrés 23

Archipelago”

FIGURE 6-2 Anglo French Arbitration: The Channel Islands 24
do not block the projection of the French
mainland coasts

FIGURE 6-3 Canada-France (St Pierre and Miquelon) 25

Maritime boundary established by the Award

FIGURE 6-4 St Pierre and Miquelon: their presence does no26
block the seaward extension of the maritime
projection of Canada’s coasts

FIGURE 6-5 Nicaragua’s potential exclusive economic zone 27

entitlement

246FIGURE 6-6 Colombia’s potential exclusive economic zone 28
entitlement

FIGURE 6-7 Area of overlapping potential exclusive 29
economic zone entitlements

FIGURE 6-8 The area of overlapping entitlements v. 30

Colombia’s claimed relevant area

FIGURE 6-9 Delimitation of the exclusive economic zone: 31
12-nautical-mile enclaves

FIGURE 6-10 Delimitation of the exclusive economic zone: 32

12 and 3-nautical-mile enclaves

FIGURE 6-11 Potential result of applying the St Pierre an33
Miquelon methodology to the Colombian
islands

FIGURE 6-12 The Dubai-Sharjah Award 34

FIGURE 6-13 The India-Maldives Agreement 35

FIGURE 6-14 The Australia-France (New Caledonia) 36
Agreement

FIGURE 6-15 The India-Thailand Agreement 37

247

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