The 6,000-passenger ship, which weighs 227,000 tonnes and cost almost £0.8 billion to build, is on her first-ever sea trial. The purpose of trial is to test the ship's engine and manoeuvre.
Harmony of the Seas, which is nearly 330 ft longer than Titanic, has 500 of her maximum 2,000 crew aboard for tests. The vessel stretches to 1,187 feet and is 165 feet longer than the Eiffel Tower.
Yesterday (March 10), Harmony of the Seas was helped from Saint-Nazaire port by 6 tug boats. The ship continues its sea trial until Sunday. 3 pilots who have trained on a simulator in Nantes for the past one year, helped the captain in the manoeuvres needed to guide the ship out of Saint-Nazaire estuary.
Even when the 210 feet tall ship was miles away from western France, Harmony could be seen from the shore line as thousands of spectators gathered to see her on the water for the first time.
Guests will be entertained in luxury staterooms and suites across the 18 decks of the enormous ship. There are several promenades, two FlowRiders and two rock-climbing walls on the vessel.
There is also an ice-skating rink and state-of-the-art theatre with Broadway-style productions and aerial acts. The ship boasts The Ultimate Abyss that flings thrill-seekers down 10 decks, at over 150 feet above the waves.
Harmony of the Seas is more than 3 feet wider than the previous 2 biggest ships in the world, Allure of the Seas and the Oasis of the Seas. Work on Harmony started in September 2013. Her next trial will take place before the end of April. The delivery is set for May 12.