The Queen Mary ship is a retired ocean liner that sailed for the Cunard Line between 1936 and 1967. Launched on September 26, 1934, the Queen Mary traveled 13 feet to the gallon, contained 40,000 hp turbine steam engines, 4 propellers weighing 35 tons each, and a 140 ton rudder weighing 81, 234 tons. Not only did the Queen Mary ship sail for three decades across the Atlantic entertaining its passengers, but also was used during World War II to escort over 800,000 troops more than 600,000 miles. Carrying on average 1957 passengers serviced by a crew of 1174, the Queen Mary ship has been recorded as one of the largest passenger liners ever built.