The U.S. Navy submarine USS Rock (SS-274/SSR-274). The Rock was modified in the 1950s and was commissioned with the SSR-274 designator. Photo dated 22 March 1955.
Categories: Ships and Submarines
 
 
Thank you to the Mario Family Foundation for enabling the digitization of the U.S. Naval Institute’s Photo Archive. The physical photos in the Photo Archive are stored in the Mildred M. Mario Photo Archive Room located at the U.S. Naval Institute’s Headquarters in Annapolis, MD.

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