USS Grayback (SSG-574)
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USS Grayback, the lead ship of her class of submarine, was the second ship of the United States Navy to be named for the grayback.
Grayback (LPSS-574), underway, c. 1968
Grayback prior to launch
Grayback preparing to launch a Regulus II missile
1982 view
SSM-N-9 Regulus II
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The SSM-N-9 Regulus II was a guided supersonic cruise missile armed with a nuclear warhead, intended for launching from surface ships and submarines of the U.S. Navy.
USS Grayback (SSG-574)
…armed with the Regulus nuclear cruise missile. Grayback represented a new class of SSG guided missile submarines, and was to be the first to carry the Regulus II sea-to-surface missile. In 1958, Grayback conducted tests and shakedown along the West Coast. While operating out of Naval Base Ventura County in Port…
Regulus II test launch in 1957. The swept-forward Ferri-style intake can be seen.
The hangar for the supersonic Regulus II cruise missile being installed aboard USS King County (AG-157), a Landing Ship, Tank (LST) converted to an experimental guided-missile testing ship, on 5 April 1957. USS YD-33 is doing the lifting.