En Route to the USS Requin Published 12 Aug 2012 at 2816 × 2112 in U.S.S. Requin — Extended Tour of the Cold War Submarine at the Carnegie Science Center← PreviousNext → Soon after the war, the USS Requin began serving as a training target for sonar crews. After several refits during the Cold War, she eventually came to rest in Pittsburgh as a museum exhibit in 1990.