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This entry includes the following claims, the definitions of which are excerpted from the United Nations Convention on the Law of the Sea (UNCLOS), which alone contains the full and definitive descriptions:
territorial sea - the sovereignty of a coastal state extends beyond its land territory and internal waters to an adjacent belt of sea, described as the territorial sea in the UNCLOS (Part II); this sovereignty extends to the air space over the territorial sea as well as its underlying seabed and subsoil; every state has the right to establish the breadth of its territorial sea up to a limit not exceeding 12 nautical miles; the normal baseline for measuring the breadth of the territorial sea is the mean low-water line along the coast as marked on large-scale charts officially recognized by the coastal state; the UNCLOS describes specific rules for archipelagic states.
contiguous zone - according to the UNCLOS (Article 33), this is a zone contiguous to a coastal state's territorial sea, over which it may exercise the control necessary to: prevent infringement of its customs, fiscal, immigration, or sanitary laws and regulations within its territory or territorial sea; punish infringement of the above laws and regulations committed within its territory or territorial sea; the contiguous zone may not extend beyond 24 nautical miles from the baselines from which the breadth of the territorial sea is measured (e.g. the US has claimed a 12-nautical mile contiguous zone in addition to its 12-nautical mile territorial sea).
exclusive economic zone (EEZ) - the UNCLOS (Part V) defines the EEZ as a zone beyond and adjacent to the territorial sea in which a coastal state has: sovereign rights for the purpose of exploring and exploiting, conserving and managing the natural resources, whether living or non-living, of the waters superjacent to the seabed and of the seabed and its subsoil, and with regard to other activities for the economic exploitation and exploration of the zone, such as the production of energy from the water, currents, and winds; jurisdiction with regard to the establishment and use of artificial islands, installations, and structures; marine scientific research; the protection and preservation of the marine environment; the outer limit of the exclusive economic zone shall not exceed 200 nautical miles from the baselines from which the breadth of the territorial sea is measured.
continental shelf - the UNCLOS (Article 76) defines the continental shelf of a coastal state as comprising the seabed and subsoil of the submarine areas that extend beyond its territorial sea throughout the natural prolongation of its land territory 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; the continental margin comprises the submerged prolongation of the landmass of the coastal state, and consists of the seabed and subsoil of the shelf, the slope and the rise; wherever the continental margin extends beyond 200 nautical miles from the baseline, coastal states may extend their claim to a distance not to exceed 350 nautical miles from the baseline or 100 nautical miles from the 2500 meter isobath; it does not include the deep ocean floor with its oceanic ridges or the subsoil thereof.
exclusive fishing zone - while this term is not used in the UNCLOS, some states (e.g., the United Kingdom) have chosen not to claim an EEZ, but rather to claim jurisdiction over the living resources off their coast; in such cases, the term exclusive fishing zone is often used; the breadth of this zone is normally the same as the EEZ or 200 nautical miles.
Australia, Chile, and Argentina claim Exclusive Economic Zone (EEZ) rights or similar over 200 nm extensions seaward from their continental claims, but like the claims themselves, these zones are not accepted by other countries; 21 of 28 Antarctic consultative nations have made no claims to Antarctic territory (although Russia and the US have reserved the right to do so) and do not recognize the claims of the other nations; also see the Disputes - international entry
territorial sea: 12 nm in the north, 3 nm in the south; note - from the mouth of the Sarstoon River to Ranguana Cay, Belize's territorial sea is 3 nm; according to Belize's Maritime Areas Act, 1992, the purpose of this limitation is to provide a framework for negotiating a definitive agreement on territorial differences with Guatemala
exclusive economic zone: 200 nm
measured from claimed archipelagic straight baselines
territorial sea: 12 nm
exclusive economic zone: 200 nm
continental shelf: 200 m depth or to the depth of exploitation; rectilinear shelf claim added
territorial sea: 12 nm (in the Gulf of Finland - 3 nm)
contiguous zone: 24 nm
exclusive fishing zone: 12 nm; extends to continental shelf boundary with Sweden
continental shelf: 200 m depth or to the depth of exploitation
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm (does not apply to the Mediterranean)
continental shelf: 200 m depth or to the depth of exploitation
territorial sea: 12 nm
exclusive economic zone: 200 nm from Iles Kerguelen and Iles Eparses (does not include the rest of French Southern and Antarctic Lands); Juan de Nova Island and Tromelin Island claim a continental shelf of 200-m depth or to the depth of exploitation
Israeli-occupied with current status subject to the Israeli-Palestinian Interim Agreement - permanent status to be determined through further negotiation
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: bilateral agreements or median lines in the Persian Gulf
continental shelf: natural prolongation
territorial sea: 12 nm; between 3 nm and 12 nm in the international straits - La Perouse or Soya, Tsugaru, Osumi, and Eastern and Western Channels of the Korea or Tsushima Strait
contiguous zone: 24 nm
exclusive economic zone: 200 nm
territorial sea: 12 nm
exclusive economic zone: 200 nm
note: military boundary line 50 nm in the Sea of Japan and the exclusive economic zone limit in the Yellow Sea where all foreign vessels and aircraft without permission are banned
territorial sea: 12 nm; between 3 nm and 12 nm in the Korea Strait
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: not specified
territorial sea: 12 nm
exclusive economic zone: 200 nm
continental shelf: 200 m depth or to the depth of exploitation; specified boundary in the South China Sea
measured from claimed archipelagic straight baselines
territorial sea: 12 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or to the edge of the continental margin
measured from claimed archipelagic baselines
territorial sea: 12 nm
continental shelf: 200 m depth or to the depth of exploitation
exclusive fishing zone: 200 nm
territorial sea: irregular polygon extending up to 100 nm from coastline as defined by 1898 treaty; since late 1970s has also claimed polygonal-shaped area in South China Sea up to 285 nm in breadth
exclusive economic zone: 200 nm
continental shelf: to depth of exploitation
territorial sea: 12 nm (adjustments made to return a portion of straits to high seas)
exclusive economic zone: agreed boundaries or midlines
continental shelf: 200 m depth or to the depth of exploitation
territorial sea: 6 nm in the Aegean Sea; 12 nm in Black Sea and in Mediterranean Sea
exclusive economic zone: in Black Sea only: to the maritime boundary agreed upon with the former USSR
territorial sea: 12 nm
exclusive fishing zone: 200 nm
continental shelf: as defined in continental shelf orders or in accordance with agreed upon boundaries
measured from claimed archipelagic baselines
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or to the edge of the continental margin
a variety of situations exist, but in general, most countries make the following claims measured from the mean low-tide baseline as described in the 1982 UN Convention on the Law of the Sea: territorial sea - 12 nm, contiguous zone - 24 nm, and exclusive economic zone - 200 nm; additional zones provide for exploitation of continental shelf resources and an exclusive fishing zone; boundary situations with neighboring states prevent many countries from extending their fishing or economic zones to a full 200 nm
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