SS-420 USS Tirante

Namesake. The Tirante, a silvery, elongated "cutlass fish" found in waters off Cuba
Builder. Portsmouth Naval Shipyard, Kittery, ME
Laid down. 28 Apr 1944
Launched. 9 Aug 1944
Commissioned. 6 Nov 1944
Decommissioned. 20 Jul 1946
Recommissioned. 26 Nov 1952
Decommissioned. 1 Oct 1973
Stricken . 1 Oct 1973
Fate. Sold for scrap, 21 Mar 1974
Class and type. Tench-class diesel-electric submarine
Displacement:
1,570 tons (1,595 t) surfaced
2,414 tons (2,453 t) submerged
Length. 311 ft 8 in (95.00 m)
Beam. 27 ft 4 in (8.33 m)
Draft. 17 ft (5.2 m) maximum
Propulsion
4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines driving electrical generators
2 × 126-cell Sargo batteries
2 × low-speed direct-drive General Electric electric motors
two propellers
5,400 shp (4.0 MW) surfaced
2,740 shp (2.0 MW) submerged
Speed. 20.25 knots (38 km/h) surfaced; 8.75 knots (16 km/h) submerged
Range. 11,000 nautical miles (20,000 km) surfaced at 10 knots (19 km/h)
Endurance. 48 hours at 2 knots (3.7 km/h) submerged; 75 days on patrol
Test depth. 400 ft (120 m)
Complement. 10 officers, 71 enlisted
Armament:
10 × 21-inch (533 mm) torpedo tubes
6 forward, 4 aft)
28 torpedoes
1 × 5-inch (127 mm) / 25 caliber deck gun
Bofors 40 mm and Oerlikon 20 mm cannon