USS Razorback (SS-394), a , was the only ship of the United States Navy to be named after the razorback, a species of whale (Balaenoptera physalus) found in the far southern reaches of the Pacific Ocean. She is arguably the longest-serving combat front-line submarine still existing in the world, having been commissioned by two different countries for 56 years of active duty. She was in Tokyo Bay during the surrender of Japan. In 2004, the state of Arkansas adopted the submarine (although she was not named after the University of Arkansas Razorbacks mascot) and she is now a museum ship at the Arkansas Inland Maritime Museum. Construction and commissioning Razorback′s keel was laid down by the Portsmouth Navy Yard in Kittery, Maine on 9 September 1943. She was launched, sponsored by Hazel DuMont (Grant) Davis, wife of Captain H.F.D. Davis, manager of the Portland Navy Yard from June 1940 to June 1944, on 27 January 1944 along with and . was launched a few hours later, making 27 January 1944 the only time the U.S. Navy has launched four submarines at one shipyard in a single day. Razorback was commissioned on 3 April 1944, Lt. Comdr. A.M. Bontier, commanding. Service history U.S. Navy World War II During shakedown exercises off New London, Connecticut in late April 1944, Razorback ran aground on Race Point Ledge between Fisher Island's Race Point and Race Rock in Block Island Sound. A board of inquiry removed the captain and replaced him with Commander Roy S. Benson. The executive officer, Lt. Commander Haynes was also replaced, by Lt Commander C. Donald Brown. After shakedown off New England, Razorback proceeded to Pearl Harbor, Hawaii. Her first war patrol, commencing 25 August, was conducted east of Luzon as a member of an offensive group in support of the mid-September Palau landings. After sighting only enemy antisubmarine planes, she headed northeastward, arriving at Midway Island on 19 October. On 15 November Razorback sailed from Midway Island on her second war patrol in company with and . Operating with these submarines in the Luzon Straits, Razorback damaged 6933 ton freighter Kenjo Maru on 6 December and sank the old 820 ton destroyer Kuretake and damaged another freighter on 30 December. She arrived at Guam for refit on 5 January 1945. On 1 February Razorback set out for the East China Sea for her third war patrol, this time accompanied by