' RMS Queen Mary 2 is a transatlantic ocean liner . She was the first major ocean liner built since Queen Elizabeth 2 in 1969, the vessel she succeeded as flagship of the Cunard Line . The ship was named Queen Mary 2 by Queen Elizabeth II in 2004 after the first RMS Queen Mary , completed in 1936. Queen Mary was in turn named after Mary of Teck , consort of King George V . With the retirement of Queen Elizabeth 2 from active duty in 2008, Queen Mary 2 is currently the only transatlantic ocean liner in operation as a liner (in scheduled service between Southampton and New York ), although the ship is often used for cruising, including an annual world cruise.[ 6 ]
Queen Mary 2 was intended primarily to cross the Atlantic Ocean, and was therefore designed differently from many other passenger ships. The ship's final cost was approximately $300,000 US per berth, nearly double that of many contemporary cruise ships. This was due to the size of the ship and her unique design, which reduced the economies of scale achieved with other Carnival ships. Costs were also increased by the high quality of materials and the fact that, having been designed as an ocean liner, she required 40% more steel than a standard cruise ship.[ 7 ] She 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 contemporary cruise ships , such as Oasis of the Seas , which has a top speed of 22.6 knots (41.9 km/h; 26.0 mph). Instead of the diesel-electric configuration found on many ships, Queen Mary 2 uses a CODLAG configuration ( Combined diesel-electric and gas ) in order to achieve her maximum speed. This uses additional gas turbines to augment the power given by the diesel generators on board, and allow the ship to reach a higher maximum speed.