USS G-3, a 393-ton Lake-type submarine, was built at Bridgeport, Connecticut. Originally named Turbot, she was renamed G-3 in November 1911 and commissioned in March 1915. She was thereafter employed in experimental and training work in the vicinity of Long Island Sound, based at the New London Submarine Base, Groton, Connecticut. During the First World War, G-3 also was used for anti-submarine patrols in the same area. She was decommissioned in May 1921 and sold for scrapping in April 1922.