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 Number | Name | Commission Date | Fate | Class |
|---|---|---|---|---|
| SS-417 | Tench | 1944 | Peru for spares 1976 | Tench-Class |
| SS-418 | Thornback | 1944 | Turkey 1973, renamed TCG Uluçalireis; Museum, Istanbul, 2001 | Tench-Class |
| SS-419 | Tigrone | 1944 | Sunk as target 1976 | Tench-Class |
| SS-420 | Tirante | 1944 | Stricken 1973 | Tench-Class |
| SS-421 | Trutta | 1944 | Turkey 1972 | Tench-Class |
| SS-422 | Toro | 1944 | Scrapped 1965 | Tench-Class |
| SS-423 | Torsk | 1944 | Museum, Baltimore, MD | Tench-Class |
| SS-424 | Quillback | 1945 | Scrapped 1974 | Tench-Class |
| SS-475 | Argonaut (2) | 1945 | Canada 1968 | Tench-Class |
| SS-476 | Runner (2) | 1945 | Scrapped 1973 | Tench-Class |
| SS-478 | Cutlass | 1945 | Taiwan 1973 | Tench-Class |
