USS Grampus (SS-523)

Built to the Tench-class standard, USS Grampus (SS-523) represented the pinnacle of American wartime submarine engineering. The Tench design refined the Balao-class with improved internal arrangement and better machinery, producing submarines that served effectively from the Pacific war through the early Cold War. The Grampus collection brings this submarine's service record to life through apparel and memorabilia built for submarine veterans, active duty crews, and military families. Every item is a connection to the real history of American undersea warfare.