USS Skipjack (SS-184)

USS Skipjack (SS-184) off Provincetown, Massachusetts during sea trials, 14 May 1938
History
United States
Name	Skipjack
Builder	Electric Boat Company, Groton, Connecticut[1]
Laid down	22 July 1936[1]
Launched	23 October 1937[1]
Commissioned	30 June 1938[1]
Decommissioned	28 August 1946[1]
Stricken	13 September 1948[2]
Fate	Sunk in Operation Crossroads atomic bomb test, 25 July 1946; raised 2 September 1946; sunk as a target off southern California, 11 August 1948[1][2]
General characteristics
Class and type	Salmon-class composite diesel-hydraulic and diesel-electric submarine[2]
Displacement	1,435 long tons (1,458 t) standard, surfaced[3] 2,198 long tons (2,233 t) submerged[3]
Length	308 ft 0 in (93.88 m)[3]
Beam	26 ft 1+1⁄4 in (7.957 m)[3]
Draft	15 ft 8 in (4.78 m)[3]
Propulsion	4 × Hooven-Owens-Rentschler (H.O.R.) 9-cylinder diesel engines (two hydraulic-drive, two driving electrical generators)[2][3][4] 2 × 120-cell batteries[3] 4 × high-speed Elliott electric motors with reduction gears[2] two shafts[2] 5,500 shp (4.1 MW) surfaced[2] 2,660 shp (2.0 MW) submerged[2]
Speed	21 knots (39 km/h) surfaced[3] 9 knots (17 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	5 officers, 54 enlisted[3]
Armament	8 × 21 inch (533 mm) torpedo tubes  (four forward, four aft)  24 torpedoes [3] 1 × 3 in (76 mm) / 50 caliber deck gun [3] four machine guns

USS Skipjack (SS-184), was a Salmon-class submarine, the second ship of the United States Navy to be named after the skipjack tuna. She earned multiple battle stars during World War II and then was sunk, remarkably, by an atomic bomb during post-World War II testing in Operation Crossroads. Among the most "thoroughly sunk" ships, she was refloated and then sunk a second time as a target ship two years later.