USS Flasher (SS-249) was a Gato-class submarine which served in the Pacific during World War II. She received the Presidential Unit Citation and six battle stars, and sank 21 ships for a total of 100,231 tons of Japanese shipping, making her one of the most successful American submarines of the War. She was the first ship of the United States Navy to be named for the flasher. Construction and commissioning Flasher′s keel was laid down 30 September 1942 by Electric Boat Company, Groton, Connecticut. She was launched on 20 June 1943, sponsored by Mrs. Eleanor Saunders — wife of Lieutenant Commander Willard Saunders, commanding officer of the submarine — and commissioned 25 September 1943, Lieutenant Commander Reuben T. Whitaker in command. First and second war patrols, January – May 1944 Flasher arrived at Pearl Harbor from New London 15 December 1943 to prepare for her first war patrol, for which she sailed 6 January 1944. Bound for her patrol area off Mindoro, she sank her first target 18 January, sending a 2,900-ton former gunboat Yoshida Maru to the bottom. Adding to what would be the greatest total of enemy tonnage credited to an American submarine in World War II, she sank the freighter Taishin Maru(1,723 tons) off Manila 5 February, and sank two cargo ships of the same convoy on 14 February. Flasher arrived at Fremantle, Australia 29 February to refit. The 2 vessels sunk 14 February 1944 were the Minryo Maru(1,679 tons) and the Hokuan Maru(3,712 tons). See . (The Hokuan Maru probably rammed and sunk the 9 September 1943.) Action-bound once more, the submarine departed Fremantle 4 April 1944 for the coast of French Indochina on her second war patrol. On 29 April she contacted the French aviso Tahure guarding a freighter (Song Giang Maru, 1065 grt) off the Hon Doi Islands, and sank both. After sinking a large cargo ship (Teisen Maru) in the Sulu Sea 9 May, Flasher set course for Fremantle, arriving 28 May for refit until 19 June. Third and fourth war patrols, June – October 1944 Flasher made her third war patrol in the South China Sea, where on 28 June 1944 she contacted a heavily escorted convoy of 13 ships. She made a cautious approach, undeterred by the escort, and shortly after midnight 29 June, broke into the convoy to sink a freighter (Nippo Maru 6,079 tons) and badly damage a large