4 × General Motors Model 16-248 V16 Diesel engines driving electric 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
21 knots (39 km/h) surfaced[3]
9 kn (17 km/h) submerged[3]
Range
11,000 nautical miles (20,000 km) surfaced at 10 kn (19 km/h)[3]
Endurance
48 hours at 2 kn (4 km/h) submerged[3]
75 days on patrol
Test depth
300 ft (90 m)[3]
Complement
6 officers, 54 enlisted[3]
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 Grouper (SS/SSK/AGSS-214), a Gato-class submarine, was the only ship of the United States Navy to be named for the grouper.
^ abcdefFriedman, Norman (1995). U.S. Submarines Through 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 285–304. ISBN 1-55750-263-3.
^ abcdefgBauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 271–273. ISBN 0-313-26202-0.
^ abcdefU.S. Submarines Through 1945 pp. 305–311
^ abcdeBauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 270–280. ISBN 978-0-313-26202-9. OCLC 24010356.
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