Turks and Caicos Islands
territorial sea: 12 nm
exclusive fishing zone: 200 nm

Tuvalu
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm

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)