NAME DESIG. LAT. LONG. 
Sedna Fracture Zone fracture zone 47°30'N 145°00'W 
Sedna Ridges ridges 47°30'N 143°16'W 
Seewarte Seamount Chain: 
see Seewarte Seamounts seamounts 30°00'N 28°30'W 
Seewarte Seamounts seamounts 30°00'N 28°30'W 
Sefsaf Canyon canyon 36°49'N STS SIE 
Seguam Canyon canyon 52°40'N 172°36'W 
Segula Basin basin 50°31'N 178°00'E 
Segula Canyon canyon 52°12'N 177°54'E 
Segula Knoll knoll 50°28'N 177°58’E 
Segundo Seamount seamount 13°00'N 165°05'W 
Seiko Seamounts: see Takuy6-daini Seamount seamount 34°17'N 143°52’E 
Seine, Banc dela; see Seine Seamount seamount 33°45'N 14°25'W 
Seine Abyssal Plain: see Seine Plain plain 34°00'N 12°15'W 
Seine Bank: see Seine Seamount seamount 33°45'N 14°25'W 
Seine Plain plain 34°00'N 12°15'W 
Seine Seamount seamount 33°45'N 14°25'W 
Sekvoyya, Kan'on: see Soquel Canyon canyon 36°48'N 122°00'W 
Selkirk Rise rise 37°00'S 82°00'W 
Semboeni Reef: see Sembuni Reefs reefs 2°17'N 109°11'E 
Sembuni Reefs reefs 2°17'N 109°11'E 
Seminole Seamount seamount 49°46'N 129°50'W 
Sen, Gora: see Seine Seamount seamount 33°45'N 14°25'W 
Sengfeller Seamount seamount 49°50'N 157°45'W 
Sentry Bank reef 5°40'N 119°18'E 
Seram Trench: see Ceram Trough trench 2°25'S 129°30'E 
Seranilla Seaknoll: see Serranilla Bank bank 15°50'N 79°50'W 
Seringapatam Reef reef 13°38'S 122°05'E 
Sermilik Valley valley 64°30'N 36°30'W 
Serrana, Banco de: see Serrana Bank bank 14°23'N 80°12'W 
Serrana Bank bank 14°23'N 80°12'W 
Serranilla, Banco: see Serranilla Bank bank 15°50'N 79°50'W 
Serranilla Bank bank 15°50'N 79°50'W 
Serrano Seamount Range: 
see Serrano Seamounts seamounts 11°10’N 163°00'W 
Serrano Seamounts seamounts 11°10'N 163°00'W 
Serrano Tablemount tablemount 9°15'N 158°05'W 
Serveyor, Gora: see Surveyor Seamount seamount 56°05'N 144°20'W 
Setubal Canyon canyon 38°15'N 9°15'W 
Setubal Submarine Canyon: see Settiibal Canyon canyon 38°15'N 9°15'W 
Severnaya Strath: see Voronin Trough trough 80°00'N 85°00’E 
Severo-Amerikanskaya Kotlovina: 
see North American Basin basin 30°00'N 60°00'W 
Severo-Atlanticheskiy Khrebet: 
see Mid-Atlantic Ridge cordillera 0°00’ 20°00'W 
Severo-Australiyskaya Kotlovina: 
see North Australian Basin basin 14°30'S 116°30'E 
Severo-Fidzhiyskaya Kotlovina: 
see North Fiji Basin basin 16°00'S 174°O0'E 
Severo-Vostochnaya Kotlovina: 
see Northeast Pacific Basin basin 20°00'N 140°00'W 
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