RMS Queen Mary 2 (also referred to as the QM2) is a transatlantic ocean liner. She is the only major ocean liner built for Cunard Line since Queen Elizabeth 2 in 1969, the vessel she succeeded as flagship of the Cunard Line.
The new ship was named Queen Mary 2 by Queen Elizabeth II in 2004 after the first 1936 namesake ship RMS Queen Mary. With the retirement of Queen Elizabeth 2 in 2008, Queen Mary 2 is the only transatlantic ocean liner in line service between Southampton and New York, which operates for part of each year. The ship is also used for cruising, including an annual world cruise.
Queen Mary 2 has a maximum speed of just over 30 knots (56 km/h; 35 mph) and a cruising speed of 26 knots (48 km/h; 30 mph), much faster than a contemporary cruise ship. Instead of the diesel-electric configuration found on many ships, Queen Mary 2 uses integrated electric propulsion to achieve her top speed. This uses gas turbines to augment the power generated from the ship's diesels.
Queen Mary 2's facilities include fifteen restaurants and bars, five swimming pools, a casino, a ballroom, a theatre, and the first planetarium at sea. There are also kennels and a nursery on board.