Tench-Class Specifications

Lead Boat: SS-417, U.S.S. Tench
Length: 312′
Beam: 27′
Draft: 16′ 5″ (Surface trim)
Displacement: 1,570 tons (surfaced); 2,414 tons (submerged)
Speed: 20 knots (surfaced); 9 knots (submerged)
Diving Depth: 400′ (test depth)
Range: 11,000 miles
Crew: 10 officers, 71 enlisted
Deck Gun: 1 or 2-5″/25-calibre
Anti-Aircraft Weapons: 2-40mm
Light Weaponry: 2 to 6 .50-calibre heavy machineguns
Torpedoes: 6-21″ torpedo tubes (bow); 4-21″ torpedo tubes (stern); 24 torpedoes
Engines: 4-GM-Winton V-16, or 4-Fairbanks-Morse 10-cylinder opposed diesels
Motors: 2-2,700 hp direct drive DC variable speed
Radar: SD/SK air search radar, SJ surface search, ST periscope radar
Sonar: JP hydrophones, JK/QC, QB sonar
Wartime Modifications: Little or none. Many underwent extensive modification post-war, including GUPPY conversions.

 

Hull NumberNameCommission DateFateClass
SS-417Tench1944Peru for spares 1976Tench-Class
SS-418Thornback1944Turkey 1973, renamed TCG Uluçalireis; Museum, Istanbul, 2001Tench-Class
SS-419Tigrone1944Sunk as target 1976Tench-Class
SS-420Tirante1944Stricken 1973Tench-Class
SS-421Trutta1944Turkey 1972Tench-Class
SS-422Toro1944Scrapped 1965Tench-Class
SS-423Torsk1944Museum, Baltimore, MDTench-Class
SS-424Quillback1945Scrapped 1974Tench-Class
SS-475Argonaut (2)1945Canada 1968Tench-Class
SS-476Runner (2)1945Scrapped 1973Tench-Class
SS-478Cutlass1945Taiwan 1973Tench-Class