P&O Cruises will announce the name of its new ship on Thursday on its Facebook page.
The cruise line has invited members of the public to suggest a suitable name for the ship and has received over 30,000 submissions.
A panel of experts will make the final decision, which will be revealed at 4pm on May 24.
The first piece of steel has now been cut for the ship which is being built at the Meyer Werft shipyard in Papenburg.
A steel cutting ceremony was attended by P&O Cruises senior vice president Paul Ludlow, Carnival UK president Josh Weinstein and managing director of Meyer Werft, Tim Meyer.
Ludlow said: "Our new ship will be the largest ship ever operated by the brand and the largest ever to be dedicated exclusively to the UK cruise industry
"It will also be the first ship in our market to be powered by LNG, the most environmentally-friendly power source yet for large-scale cruise ships.
"With UK passengers numbers set to top two million for the first time this year, we are confident in cruising’s future and believe that there will be an exceptionally positive UK response to this ship and the innovations it will bring. We also expect this ship to persuade many UK consumers to take that all important first cruise."
