Royal Caribbean has a cruise ship that's almost that size. It's about 190 feet shoter, and 23 feet narrower.
http://www.royalcaribbean.com/findacruise/ships/class/ship/home.do;jsessionid=00004_6NE4cJxCldU0rwPjwO0tM:12h dhuaq2?br=R&shipClassCode=FR&shipCode=FR
Freedom of the Seas
Ship Facts
Maiden Voyage: June 4, 2006
Passenger Capacity: 3,634 double occupancy
Godmother: Katherine Louise Calder
Gross Tonnage: 160,000
Length: 1,112'
Max Beam: 184'
Draft: 28'
Cruising Speed: 21.6 knots