USS Grayback (SS-208)

	Grayback in 1941
History
United States
Builder	Electric Boat Company, Groton, Connecticut
Laid down	3 April 1940
Launched	31 January 1941
Commissioned	30 June 1941
Fate	Sunk by Japanese aircraft south of Okinawa, 27 February 1944
General characteristics
Class and type	Tambor class diesel-electric submarine
Displacement	1,475 long tons (1,499 t) standard, surfaced; 2,370 long tons (2,410 t) submerged;
Length	307 ft 2 in (93.62 m)
Beam	27 ft 3 in (8.31 m)
Draft	14 ft 7+1⁄2 in (4.458 m)
Propulsion	4 × General Motors Model 16-248 V16 Diesel engines driving electric 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	20.4 knots (38 km/h) surfaced; 8.75 knots (16 km/h) submerged;
Range	11,000 nautical miles (20,000 km) at 10 knots (19 km/h)
Endurance	48 hours at 2 knots (3.7 km/h) submerged
Test depth	250 ft (76 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 Grayback (SS-208), a Tambor-class submarine, was the first ship of the United States Navy to be named for the lake herring, Coregonus artedi. She ranked 20th among all U.S. submarines in total tonnage sunk during World War II, with 63,835 tons, and 24th in number of ships sunk, with 14. She was sunk near Okinawa on 27 February 1944. Her wreck was discovered in June 2019.

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