Tench class submarine

Tench class attack submarine
Class Overview
Class Type	Fast Attack Submarine
Class Name	Tench (a type of fish)
Preceded By	Balao-class attack submarine
Succeeded By	Barracuda-class submarine
Ships of the Class:	See below for a complete list of Tench-class submarines

Tench class submarines were an evolutionary improvement over the Gato and Balao classes, only about 35 to 40 tons larger, but more strongly built and with a slightly improved internal layout. Further improvements were made to SS-435 and subsequent boats, so those advanced Tenches are sometimes referred to as the Corsair class.

Initial plans called for 146 hulls to be built, but 115 of those orders were cancelled in 1944 and 1945 when it became apparent that they would not be needed to defeat Japan. The remaining 31 were commissioned between October 1944 (Tench) and February 1951 (Grenadier).

General characteristics

Displacement: 1826 tons surfaced, 2391 tons submerged
Length: 312 ft (95 m)
Beam: 27 ft (8.2 m)
Draft: 15 ft (4.6 m)
Test Depth: 400 ft (122 m)
Speed: 20.75 knots (38 km/h) surfaced, 8.75 knots (16 km/h) submerged
Armament: 1 x 5 in (127 mm) 25 caliber gun, 2 x 40 mm cannon, 6 x 21 in (533 mm) torpedo tubes forward, four aft
Crew: 75 to 80 officers and men
Powerplant: 4 x 6500 hp (4.8 MW) diesel engines, 4 x 2740 hp (2.0 MW) electric motors
Range: 12,000 nautical miles (22,000 km) at 10 knots (19 km/h) surfaced

Boats

† These hulls were named but cancelled before commissioning.

Submarine classes | Tench class submarines

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General characteristics

Boats