Cruise ship Britannia: Queen names P&O luxury vessel Published duration 10 March 2015

media caption Britannia is the fifth cruise ship The Queen has officially named

The Queen has officially named the new cruise ship Britannia.

The 3,600-passenger vessel is the largest cruise ship designed for the British holiday market, operator P&O has said.

Its home port will be Southampton for the summer months, after being built in Italy at a cost of almost £0.5bn.

The ceremony, which Prince Philip also attended, started at about midday and marked the fifth official naming of a cruise ship by Her Majesty.

image copyright Getty Images image caption A ceremony with celebrities and performances preceded the Queen naming the ship

image copyright P&O image caption The pomp and ceremony began with fireworks and a gala dinner on Monday evening

media caption Duncan Kennedy takes a look around the cruise ship Britannia

Captain Paul Brown, who gave the Queen a tour of the ship, said: "It is my great honour after 33 years at sea to show the Queen around.

"I will be showing her the atrium and the bridge then heading down to the restaurant for lunch."

Britannia bears the same name as the Queen's former Royal Yacht Britannia, which was decommissioned in 1997 after more than 40 years of service.

image copyright European Photopress Agency image caption The ship can hold up to 3,600 passengers and 1,500 crew

image caption Britannia is the fifth ship the Queen has named

The 141,000-tonne ship features a 94m (308ft) union jack on its bow and will make its maiden voyage to Spain, Italy and France on 14 March.

At 330m (1,082ft), the ship is longer than the Shard is tall.

British Brut NV from the Wiston Estate Winery at Pulborough in West Sussex is being used for the naming ceremony in Britannia's home port of Southampton.

Analysis: Paul Clifton, BBC South Today transport correspondent

image caption Paul Clifton took a tour of the ship before its official naming ceremony

In style this is all about looking and feeling British, even though the parent company is American and the ship itself has been built in Italy.

There are 15 passenger decks, 13 places to eat and 13 bars, four swimming pools and nine places to enjoy the entertainment.

The days of cruising as a holiday exclusively for the rich are long gone.

One in nine British people cruise - and that makes it more popular than skiing.

The ship is being hailed as a boost to Southampton's cruise industry, which the city council said had doubled in the past 10 years.

In 2004 there were 203 cruise ship visits, bringing 532,501 passengers. In 2014 Southampton received more than 430 cruise ships, with passenger numbers exceeding 1.5 million.

Stewart Dunn, chief executive of Hampshire Chamber of Commerce, said: "It is great that Britannia will be based in Southampton.

"There was a survey a few years ago which showed that every turnaround of a cruise ship in the city is worth £2m to the local economy.

"It is also good for 'brand Southampton' indirectly as it is great publicity for the city with the Queen coming here and having the word Southampton on the side, it is promoting us wherever it goes."

image copyright PA image caption Britannia's namesake, the royal yacht, was in service from 1954 to 1997 and is now a tourist attraction in Edinburgh

image copyright Getty Images image caption Prince Philip also attended the event with the Queen in Southampton

The Queen has previously christened the Royal Yacht Britannia and four cruise ships Queen Elizabeth 2, Oriana, Queen Mary 2 and the Queen Elizabeth.

The Britannia cruise ship will sail from Southampton during the summer and from the Caribbean in the winter.

David Dingle, CEO of Carnival UK, the company which owns P&O said at the ceremony: "The naming of a new ship is a proud moment for any shipping line but today holds a special significance for P&O and our shared past and future.

"We are honoured the Queen is naming Britannia."

image copyright P&O image caption Bands, dancers and singers performed at the naming ceremony of the Britannia