<Li> 5,479 passengers at double occupancy </Li> <Tr> <Td> Crew: </Td> <Td> 2,300 </Td> </Tr> <P> MS Harmony of the Seas is an Oasis - class cruise ship built by STX France at the Chantiers de l'Atlantique shipyard in Saint - Nazaire, France for Royal Caribbean International . With a gross tonnage of 226,963 GT, she is the largest passenger ship in the world, surpassing her older sisters Oasis of the Seas and Allure of the Seas . </P> <P> The success of the first two Oasis - class ships led Royal Caribbean Cruises to order a third ship of the type in December 2012 . Harmony of the Seas was floated out on 19 June 2015, began her first sea trials on 10 March 2016, and was delivered to Royal Caribbean on 12 May 2016 . After a construction time of 32 months, the ship first set sail on 15 May 2016 from the STX France docks in Saint - Nazaire, viewed by some 70,000 people . Her first destination was Southampton, England, although her home port was Barcelona until 23 October 2016 when she crossed the Atlantic . </P>

Royal caribbean largest ship harmony of the seas