Traditionally, an ocean liner for the transoceanic trade will be built to a higher standard than a typical cruise ship, including stronger plating to withstand ocean voyages, most commonly crossing the North Atlantic. The only dedicated transatlantic ocean liner in operation as a liner, as of September 2009, is the Queen Mary 2 of the Cunard fleet. The liner Queen Mary is in service as a hotel in Long Beach, USA, the Queen Elizabeth 2 is slated for similar duty in Cape Town, and the United States is currently stored in Philadelphia, USA, with long-standing plans to return it to service, although this appears increasingly unlikely given her age and condition. Some former ocean liners currently operate as cruise ships, however this number is ever decreasing. The MS Marco Polo is an example.