 was decommissioned at Mare Island in 1980, then rigged for towing back to Groton, Connecticut to serve as a museum of naval history.In 1966, during the Vietnam War, the U.S. Navy transferred their Brown Water Navy Riverine Training Operations from Coronado, California to Mare Island.Motorists traveling along Highway 37 could often see U.S. Navy River Patrol Boats, among other river assault type boats, maneuvering through the sloughs of what is now the Napa-Sonoma State Wildlife Area, which borders the north and west portions of Mare Island.