NAVYPEDIA

Photo

Grayback (left) and Growler (right) 1964

Ships

No	Name	Yard No	Builder	Laid down	Launched	Comm	Fate
SSG577	Growler		Portsmouth N Yd, Kittery	15.2.1955	5.4.1958	30.8.1958	stricken 9.1980

Technical data

Displacement standard, t	2174
Displacement normal, t	/ 3387
Length, m	96.6
Breadth, m	8.30
Draught, m	5.20
No of shafts	2
Machinery	3 Fairbank Morse diesel-generators, 2 Elliott electric motors
Power, h. p.	4600 / 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), 6 - 533 TT (4 Mk 54 bow, 2 Mk 55 stern)
Electronic equipment	BPS-12 radar, BQS-4, BQR-2 sonars, BLR-1 ECM suite
Complement	84
Diving depth operational, m	210

Standard scale images

Graphics

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 (4 SSM-N-8)

Naval service

Both were decommissioned in May 1964 when Regulus was retired.