The first, and so far only, ship to have been sunk by a nuclear submarine in conflict was the ARA Belgrano, a cruiser belonging to the Argentine Navy. She was sunk on 2 May 1982 by the nuclear hunter-killer submarine HMS Conqueror, using three Mk 8 torpedoes, each with an 362-kg (800-lb) warhead, during the Falklands War between the United Kingdom and Argentina. Two of these warheads actually struck the Belgrano, and she sank with a loss of 323 crewmembers. Originally built as the USS Phoenix, for the US Navy, she survived WW2 and was sold to Argentina in October 1951 and was renamed General Belgrano in 1956. She was sunk because she and the two destroyers keeping company in her Task Group represented a significant threat to the British forces, although the incident has been surrounded by political controversy ever since.