A History of the Submarines Built at the
Mare Island Naval Shipyard

Exhibit by Steve Shay
Frame 2, Page 13

USS Grayback SSG-574
Grayback class (No reported postmarks)
Launched July 2, 1957

Upper: Launch cover, design by Lloyd Piller, sponsored by Mare Island Naval Shipyard Supervisors Association, shipyard machine postmark.
Lower: Cover commemorating first anniversary Official US missile mail via Regulus II launched from USS Grayback. Note misspelling of Grayback on cachet. Commemorative cancel.

Cover 680: Grayback SSG-574, July 2, 1957

Cover 681: Grayback SSG-574, March 7, 1964

First submarine designed at Mare Island and first submarine built to carry missiles. Fitted with two Regulus II nuclear missiles housed in large hanger on deck, required to surface to fire the missiles. Length of 318', displacement of 3,650 tons. After sixteen patrols in the Pacific, decommissioned at Mare Island May 1964.

 

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