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fighting ships of the world

UNITED STATES NAVY (UNITED STATES OF AMERICA)

SUBMARINES

GRAYBACK missile submarine (1958)

Grayback 1963

Grayback 1974

Grayback 1979

No Name Yard No Builder Laid down Launched Comm Fate
SSG574, 8/1968- LPSS574, 6/1975- SS574 Grayback   Mare Island N Yd, Vallejo 1/7/1954 2/7/1957 7/3/1958 amphibious transport submarine 8/1968, stricken 1/1984

 

Displacement standard, t

2287

Displacement normal, t

2670 / 3638

Length, m

98.3

Breadth, m

9.10

Draught, m

5.30

No of shafts

2

Machinery

3 Fairbank Morse diesel-generators, 2 Elliott electric motors

Power, h. p.

4500 / 5600

Max speed, kts

15 / 12

Fuel, t

diesel oil

Endurance, nm (kts)  

Armament

2 x 1 Regulus I SSM launchers (4 SSM-N-8), 8 - 533 TT (6 Mk 52 bow, 2 Mk 53 stern)

Sensors

BPS-12 radar, BQS-4, BQR-2 sonars, BLR-1 ECM suite

Complement

84

Diving depth operational, m

210

   

Ship project history: Grayback and Growler were laid down as sisters to Darter, then cut in two and lengthened by ~15m to accommodate two cylindrical hangars for Regulus missiles.

Modernizations: 1964: - 2 x 1 Regulus I SSM launchers (4 SSM-N-8)

(11/1967-5/1969, Mare Island N Yd): length was increased to 101.8m (2670st/3650t); missile hangars were converted to 'lock out' swimmers and swimmer delivery vehicles (SDV), fin was raised; + BQG-4 PUFFS sonar

Naval service: Both were decommissioned in May 1964 when Regulus was retired. However, Grayback was converted to amphibious transport (LPSS). She was reclassified as on attack submarine in 1975, apparently without any further changes. A similar planned conversion of her sister ship was cancelled in view of the high cost of die first conversion.

Grayback 1969

Ivan Gogin, 2015