<Tr> <Td> Crew: </Td> <Td> 1,300 (average) </Td> </Tr> <Tr> <Td> Notes: </Td> <Td> </Td> </Tr> <P> MS Liberty of the Seas is a Royal Caribbean International Freedom - class cruise ship which entered regular service in May 2007 . It was initially announced that she would be called Endeavour of the Seas, however this name was later changed . The 15 - deck ship accommodates 3,634 passengers served by 1,360 crew . She was built in 18 months at the Aker Finnyards Turku Shipyard, Finland, where her sister ship, Freedom of the Seas, was also built . Initially built at 154,407 gross tonnage (GT), she joined her sister ship, Freedom of the Seas, as the largest cruise ships and passenger vessels then ever built . She is 1,111.9 ft (338.91 m) long, 184 ft (56.08 m) wide, and cruises at 21.6 - knot (40 km / h; 25 mph). </P> <P> Liberty of the Seas is the second of the Freedom class vessels . A third ship, Independence of the Seas, was delivered in April 2008 . In 2009, the first in a new Oasis Class of ships measuring 220,000 gross tons displaced the Freedom class as the world's largest passenger ships . </P>

When was royal caribbean liberty of the seas built