The Queen Mary was Dubbed the "Grey Ghost" because of her stealth and stark color, the Queen Mary was the largest and fastest troopship to sail, capable of transporting as many as 16,000 troops at 30 knots. After the end of WWII, the Queen Mary began a 10-month retrofitting process, which would return the ship to her original glory. The Queen Mary, is  full Royal Mail Ship (RMS) Queen Mary, British passenger ship of the Cunard Line that was the epitome of the transatlantic ocean liner. The Queen Mary was in service from 1936 to 1967, and it later became a hotel and tourist attraction, docked at Long Beach, California.