One of Royal Caribbean’s largest cruise ships, Allure of the Seas, is getting ready to welcome passengers on board in Europe this summer with a major $100 million (£77 million) revamp.

Gross tonnage: 225,282 While Oasis has the same gross tonnage as Allure, she has a slightly shorter length of 361m, although her width is also 66m.

New staterooms An extra 111 cabins are being added to Allure of the Seas, giving it a total of 2,859. This includes two new ‘Ultimate Panoramic Suites’ above Allure’s bridge.