<P> Queen Mary 2 is the flagship of Cunard Line . The ship was constructed for eventual replacement of the aging Queen Elizabeth 2, the Cunard flagship from 1969 to 2004 and the last major ocean liner built before the construction of Queen Mary 2 . Queen Mary 2 had the Royal Mail Ship (RMS) title conferred on her, as a gesture to Cunard's history, by Royal Mail when she entered service in 2004 on the Southampton to New York route . </P> <P> Queen Mary 2 is not a steamship like many of her predecessors, but is powered primarily by four diesel engines, with two additional gas turbines used when extra power is required; this integrated electric propulsion configuration is used to produce the power to drive her four electric propulsion pods as well as powering the ship's hotel services . The spaces for these prime movers are also split, and controls are also backed up, with the intention of preventing a single failure from disabling the ship . </P> <P> Like her predecessor Queen Elizabeth 2 she is built for crossing the Atlantic Ocean, though she is regularly used for cruising; in the winter season she cruises from New York to the Caribbean on twelve - or thirteen - day tours . Queen Mary 2's 30 - knot (56 km / h; 35 mph) open ocean speed sets the ship apart from cruise ships, such as MS Oasis of the Seas, which has a service speed of 22.6 knots (41.9 km / h; 26.0 mph); QM2's normal service speed is 26 knots (48 km / h; 30 mph). While the hull of a cruise ship will typically have a block coefficient of 0.73 (1.0 would represent a rectangular block) Queen Mary 2 is more fine - lined, with a block coefficient of 0.61 . </P> <P> Cunard completed a design for a new class of 84,000 GT, 2,000 passenger liners on 8 June 1998, but revised them upon comparing those specifications with Carnival Cruise Line's 100,000 GT Destiny - class cruise ships and Royal Caribbean International's 137,276 GT Voyager class . </P>

Where does the queen mary 2 sail to