USS Trout (SS-202)

History
United States
Name	USS Trout
Builder	Portsmouth Naval Shipyard, Kittery, Maine[1]
Laid down	8 August 1939[1]
Launched	21 May 1940[1]
Commissioned	15 November 1940[1]
Fate	Lost northwest of the Philippines around 29 February 1944[2]
General characteristics
Class and type	Tambor-class diesel-electric submarine[2]
Displacement	1,475 long tons (1,499 t) standard, surfaced[3] 2,370 tons (2,408 t) submerged[3]
Length	307 ft 2 in (93.62 m)[3]
Beam	27 ft 3 in (8.31 m)[3]
Draft	14 ft 7+1⁄2 in (4.458 m)[3]
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 9-cylinder opposed piston diesel engines driving electrical generators[4][5] 2 × 126-cell Sargo batteries[6] 4 × high-speed General Electric electric motors with reduction gears[4] two propellers[4] 5,400 shp (4.0 MW) surfaced[4] 2,740 shp (2.0 MW) submerged[4]
Speed	20.4 knots (38 km/h) surfaced[3] 8.75 knots (16 km/h) submerged[3]
Range	11,000 nautical miles (20,000 km) at 10 knots (19 km/h)[3]
Endurance	48 hours at 2 knots (3.7 km/h) submerged[3]
Test depth	250 ft (76 m)[3]
Complement	6 officers, 54 enlisted[3][7]
Armament	10 × 21-inch (533 mm) torpedo tubes 6 forward, 4 aft 24 torpedoes[6] 1 × 3-inch (76 mm) / 50 caliber deck gun[6] Bofors 40 mm and Oerlikon 20 mm cannon

USS Trout (SS-202) was the fifth Tambor-class submarine commissioned in the United States Navy, serving in the Pacific from 1941 to 1944. She received 11 battle stars for World War II service and Presidential Unit Citation for her second, third, and fifth war patrols. Trout also delivered ammunition to the besieged American forces on Corregidor and brought out 20 tons of gold bars and silver pesos from the Philippine currency reserve to Pearl Harbor. During 1941, she was used as a target by a series of tests determining the vulnerability of submarines to depth charge attacks.^[8]

Trout is credited with sinking 12 enemy ships for 37,144 tons according to JANAC records. During her first ten war patrols she made 32 torpedo attacks, firing 85 torpedoes, including 34 hits, 5 confirmed premature detonations, 5 confirmed duds, and 25 suspected duds. She was also involved in six battle surface actions and was attacked with depth charges eight times.

She was reported overdue on 17 April 1944 and presumed lost with all hands on her eleventh war patrol. Of the twelve Tambor-class submarines, only five survived the war.