USS Trigger (SS-237)

	USS Trigger (SS-237) underway off Mare Island Navy Yard, 6 April 1942
History
United States
Name	Trigger
Builder	Mare Island Naval Shipyard
Laid down	1 February 1941
Launched	22 October 1941
Sponsored by	Mrs. Walter N. Vernou
Commissioned	31 January 1942
Fate	Sunk 28 March 1945
Stricken	11 July 1945
General characteristics
Class & type	Gato-class diesel-electric submarine
Displacement	1,525 long tons (1,549 t) surfaced; 2,424 long tons (2,463 t) submerged;
Length	311 ft 9 in (95.02 m)
Beam	27 ft 3 in (8.31 m)
Draft	17 ft (5.2 m) maximum
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 9-cylinder opposed piston diesel engines driving electrical generators; 2 × 126-cell Sargo batteries; 4 × high-speed General Electric electric motors with reduction gears; two propellers; 5,400 shp (4.0 MW) surfaced; 2,740 shp (2.0 MW) submerged;
Speed	21 kn (39 km/h; 24 mph) surfaced; 9 kn (17 km/h; 10 mph) submerged;
Range	11,000 nmi (20,000 km) surfaced at 10 kn (19 km/h)
Endurance	48 hours at 2 kn (4 km/h) submerged; 75 days on patrol;
Test depth	300 ft (90 m)
Complement	6 officers, 54 enlisted
Armament	10 × 21-inch (533 mm) torpedo tubes; 6 forward, 4 aft; 24 torpedoes; 1 × 3-inch (76 mm) / 50 caliber deck gun; Bofors 40 mm and Oerlikon 20 mm cannon;

USS Trigger (SS-237) was a Gato-class submarine, the first ship of the United States Navy to be named for the triggerfish.

History
USS Trigger (SS-237) underway off Mare Island Navy Yard, 6 April 1942
United States
Name	Trigger
Builder	Mare Island Naval Shipyard
Laid down	1 February 1941
Launched	22 October 1941
Sponsored by	Mrs. Walter N. Vernou
Commissioned	31 January 1942
Fate	Sunk 28 March 1945
Stricken	11 July 1945
General characteristics
Class & type	Gato-class diesel-electric submarine
Displacement	1,525 long tons (1,549 t) surfaced 2,424 long tons (2,463 t) submerged
Length	311 ft 9 in (95.02 m)
Beam	27 ft 3 in (8.31 m)
Draft	17 ft (5.2 m) maximum
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 9-cylinder opposed piston diesel engines driving electrical generators 2 × 126-cell Sargo batteries 4 × high-speed General Electric electric motors with reduction gears two propellers 5,400 shp (4.0 MW) surfaced 2,740 shp (2.0 MW) submerged
Speed	21 kn (39 km/h; 24 mph) surfaced 9 kn (17 km/h; 10 mph) submerged
Range	11,000 nmi (20,000 km) surfaced at 10 kn (19 km/h)
Endurance	48 hours at 2 kn (4 km/h) submerged 75 days on patrol
Test depth	300 ft (90 m)
Complement	6 officers, 54 enlisted
Armament	10 × 21-inch (533 mm) torpedo tubes 6 forward, 4 aft 24 torpedoes 1 × 3-inch (76 mm) / 50 caliber deck gun Bofors 40 mm and Oerlikon 20 mm cannon