USS United States (CC-6) was a Lexington-classbattlecruiser canceled and scrapped when the vessel was only 12 percent complete.
USS United States (CVA-58) was an aircraft carrier canceled five days after her keel was laid down in 1949. The ship would have been the lead ship under the United States-class aircraft carrier.
SS United States, an ocean liner designed to operate as USS/USNS United States as a troop transport or hospital ship.