The Edge-class party won’t be done with the debut of Celebrity Xcel later this year as a sixth ship in the popular class was just ordered by Celebrity Cruises’ parent company Royal Caribbean Group. The agreement,

That makes each vessel slightly smaller than the world’s largest cruise ship, Icon of the Seas, which has a gross tonnage of 250,800 – though the giant Royal Caribbean ship has a maximum passenger capacity of 7,600, or 5,610 based on double occupancy.