Updated 24 April 2018


M.Z.N. 90. 2012. LOS of 10 October 2012: Deposit of a chart showing the the lines of delimitation of its territorial sea and the exclusive economic zone with Colombia

Relevant articles of UNCLOS: 16(2) and 75(2)

LOSIC No. 36


M.Z.N.126.2017 LOS of 21 March 2017: Deposit of a list of geographical coordinates of points describing the maritime boundaries of its exclusive economic zone and continental shelf with Costa Rica.

Relevant articles of UNCLOS: 75(2) and 84(2)

Law of the Sea Bulletin No. 93

Communications received by the Secretary-General in connection with the deposit of charts and/or lists of geographical coordinates of points




 Civil Code as amended by Decree No. 256-CLP of 27 February 1970
 Supreme Decree No. 959-A of 28 June 1971 prescribing straight baselines for the measurement of the Territorial Sea
 Regulations of 17 February 1973 for the granting of permits to foreign vessels to visit the territorial sea of Ecuador, its coasts or islands for the purpose of tourism or scientific research
 Declaration on the continental shelf, 19 September 1985
Executive Decree No. 450 of 2 August 2010 approving and ordering publication of Ministerial Agreement 0081 of 12 July 2010 and Nautical Chart IOA42, annexed thereto, which plots the maritime boundary between Ecuador and Peru and the outer maritime boundary - southern segment - of the Republic of Ecuador (Spanish | English translation | map)


National Legislation

Maritime boundary delimitation agreements
 and other material

with Chile and Peru

 Declaration on the maritime zone, 18 August 1952 (entry into force: 18 August 1952; registration #: 14758; registration date: 12 May 1976; link to UNTS)
 Agreement on the Special Maritime Boundary Zone, 4 December 1954 (entry into force: 21 September 1967; registration #: 40521; registration date: 24 August 2004; link to UNTS)

with Costa Rica

 Agreement between the Government of Costa Rica and the Government of Ecuador Relating to the Delimitation of the Maritime Areas between Costa Rica and Ecuador, 12 March 1985
 Agreement on Maritime Delimitation between the Republic of Ecuador and the Republic of Costa Rica of 21 April 2014 (entry into force: 9 September 2016; registration number I-54729; registration date: 25 October 2017 link to UNTS)

with Colombia

 Agreement concerning delimitation of marine and submarine areas and maritime co-operation between the Republics of Colombia and Ecuador, 23 August 1975 (entry into force: 22 December 1975; registration #: 14582; registration date: 13 February 1976; link to UNTS)

with Peru

Agreement by exchange of notes of identical content between the Republic of Peru and the Republic of Ecuador of 2 May 2011 (entry into force: 20 May 2011; registration number I-48631; registration date: 27 June 2011 link to UNTS)
  • Joint Declaration on the International Recognition of the Gulf of Guayaquil as a Historic Bay, made by Ecuador and Peru on 23 November 2012: Spanish | English


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