The Queen and the Duke of Edinburgh will name the new P&O Cruises ship Britannia on March 10.
The naming ceremony is due to take place at Ocean Terminal at Southampton.
Carnival UK chairman David Dingle said: "We are honoured and proud that Her Majesty will name Britannia almost 20 years after she named the P&O Cruises ship Oriana.
"Britannia, a ship for the nation, will be the embodiment of contemporary Britain, and with her Union Jack livery she will fly the flag for Britain across the Globe."
