<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>
<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>
when did harmony of the seas set sail
when did harmony of the seas set sail
15 May 2016
15 May 2016