World’s largest cruise ship begins sea trials with tests on everything from engines to dining

The Legend of the Seas, the third vessel in the Icon-class series, departed from Meyer Turku shipyard on Sunday for sea trials, with final delivery expected in May, reports Finnish broadcaster Yle.

The trials, lasting eight to ten days, focus on testing the ship’s new, more energy-efficient power plant—equipped with six dual-fuel engines—as well as maneuverability in deep water and emergency systems. “We’re simulating different load and fault scenarios to ensure everything meets the contract specifications,” said Sami Kouvonen, the ship’s project manager.

Crew members are also evaluating onboard services, including dining. “The main kitchen is operational, and we’re eating at the buffet—no one’s going hungry here,” Kouvonen noted, describing a menu featuring Caribbean and Asian dishes alongside classic steaks. Specialty restaurants will open only after the ship’s completion.

The 365-meter Legend of the Seas, capable of carrying 5,600 passengers, is the third Icon-class vessel built for Royal Caribbean. Two more ships in the series are under construction, with options for a sixth and seventh. Each vessel supports roughly 13,000 person-years of employment, according to Meyer Turku.

While the exterior closely resembles its sister ships, interior spaces include updated functions, colors, and materials. Final touches to cabins and public areas will continue during the trials, Kouvonen said, with the ship scheduled to return to Turku by May Day.