USS Rock (SS/SSR/AGSS-274), a Gato-class submarine, was a ship of the United States Navy to be named for the rock, a striped bass found in the Chesapeake Bay region and elsewhere along the Atlantic Coast. Rock (SS-274) was laid down by the Manitowoc Shipbuilding Co., Manitowoc, Wisc., 23 December 1942; launched 20 June 1943; sponsored by Mrs. B. O. Wells, and commissioned 26 October 1943, Comdr. John Jay Flachsenhar in command.