Jamaica
measured from claimed archipelagic straight baselines
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: 200 nm or to edge of the continental margin
Jan Mayen
territorial sea: 4 nm
contiguous zone: 10 nm
exclusive economic zone: 200 nm
continental shelf: 200-m depth or to the depth of exploitation
Japan
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
Jarvis Island
territorial sea: 12 nm
exclusive economic zone: 200 nm
Jersey
territorial sea: 3 nm
exclusive fishing zone: 12 nm
Johnston Atoll
territorial sea: 12 nm
exclusive economic zone: 200 nm
Jordan
territorial sea: 3 nm
Juan de Nova Island territorial sea: 12 nm exclusive economic zone: 200 nm continental shelf: 200-m depth or to the depth of exploitation
Kazakhstan
none (landlocked)
Kenya
territorial sea: 12 nm
exclusive economic zone: 200 nm
continental shelf: 200 m depth or to the depth of exploitation