The 180,000-gt giants to be built at Turku, Finland, add to a sister pair placed by Carnival for its AIDA Cruises arm at Meyer Werft in June.

Arnold Donald, chief executive of Carnival, said: “Above all, these strategic investments are designed to exceed the vacation needs of our guests.

“But it is also important to note that these next-generation ships are an important part of our measured growth strategy, which includes replacing less efficient ships with newer, larger and more efficient vessels over a very specific period of time."

Turku