The world's largest cruise ship is getting ready to set sail. Hear about it at Urban Legends and Stranger truths. Royal Caribbean's record breaking Icon of the Seas is drawing closer to its debut in January of 2024 after completing its first phase of sea trials in Europe. Set to be the world's worlds largest cruise ship launch company's first Icon class ship, the vessel has been under construction at the Meyer Turku shipyard in Finland that according to their official release