One of the most famous of all cruise ships, the Queen Mary - now a HOTEL AND tourist attraction - is said to be host to several ghosts. One may be the spirit of John Pedder, a 17-year-old crewman who was crushed to death by a watertight door in 1966 during a routine drill. Unexplained knocking has been heard around this door, and a tour guide reported that she saw a darkly dressed figure as she was leaving the area where Pedder had been killed. She saw his face and recognized that it was Pedder from his photographs.