Grayback preparing to launch a Regulus II missile, c. 1960
|Operators:||United States Navy|
|In commission:||1958–1964, 1969–1984|
|Tonnage:||Surfaced: 2712 tonnes (2670 tons) Submerged: 3708 tonnes (3650 tons)|
|Displacement:||2,768 long tons (2,812 t) full|
|Length:||317 ft 7 in (96.80 m)|
|Beam:||27 ft 2 in (8.28 m)|
|Draft:||19 ft (5.8 m)|
|Propulsion:||3 Fairbanks-Morse Diesel engines, 2 Elliott electric motors|
15 knots (28 km/h; 17 mph) surfaced,|
12 knots (22 km/h; 14 mph) submerged
Grayback class submarine was a class of two guided missile carrying submarines of the United States Navy.
These submarines carried the short-lived (1955–64) Regulus I and Regulus II nuclear cruise missiles that were quickly phased out by Polaris Submarine Launched Ballistic Missiles (SLBMs). They and the USS Halibut (SSGN-587) were the sole submarines designed specifically to carry Regulus.
- Grayback (SSG-574), launched 1957, served as a missile submarine 1958-1964, converted to an amphibious transport submarine and served as such 1969-1984. Sunk as a target, 1986.
- Growler (SSG-577), launched 1958, served 1958-1964. Museum ship at the Intrepid Sea-Air-Space Museum in New York City from 2009.
- Jackson, Robert. "Fighting Ships of The World." London: Amber Books Ltd, 2004 Pg.314 ISBN 9781840136470
- Gardiner, Robert. "Conway's All the World's Fighting Ships 1947-1995." London: Conway Maritime Press, Ltd, 1995 Pg. 609-610
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