| Rank | Country | Maritime claims |
| Uganda | none (landlocked) |
| Ukraine | territorial sea: 12 nm
exclusive economic zone: 200 nm
continental shelf: 200-m or to the depth of exploitation |
| United Arab Emirates | 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 |
| United Kingdom | territorial sea: 12 nm
exclusive fishing zone: 200 nm
continental shelf: as defined in continental shelf orders or in accordance with agreed upon boundaries |
| United States | territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: not specified |
| United States Pacific Island Wildlife Refuges | territorial sea: 12 nm
exclusive economic zone: 200 nm |
| Uruguay | territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or edge of continental margin |
| Uzbekistan | none (doubly landlocked) |
| Vanuatu | 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 |
| Venezuela | territorial sea: 12 nm
contiguous zone: 15 nm
exclusive economic zone: 200 nm
continental shelf: 200-m depth or to the depth of exploitation |
| Vietnam | 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 |
| Virgin Islands | territorial sea: 12 nm
exclusive economic zone: 200 nm |
| Wake Island | territorial sea: 12 nm
exclusive economic zone: 200 nm |
| Wallis and Futuna | territorial sea: 12 nm
exclusive economic zone: 200 nm |
| West Bank | none (landlocked) |
| Western Sahara | contingent upon resolution of sovereignty issue |
| World | 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 |
| Yemen | 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 |
| Zambia | none (landlocked) |
| Zimbabwe | none (landlocked) |
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