Actor Russell Crowe joined Prince Charles at the royal charity première of his movie Master and Commander.
Prince Charles shared a joke with the film's star Russell Crowe
Crowe arrived with pregnant wife Danielle Spencer to the screening in aid of the Cinema and Television Benevolent Fund.
The Australian actor's co-star Paul Bettany also attended the gala in London's Leicester Square.
The naval epic, adapted from a novel by Patrick O'Brian, is set against the backdrop of the Napoleonic wars.
Crowe, who plays British naval Captain Jack Aubrey, introduced the stars of the film to Prince Charles, himself a Vice Admiral in the Royal Navy, ahead of the screening.
The prince was presented with a souvenir brochure by Max Pirkis, a 13-year-old schoolboy who stars as Lord Blakeney in the film.
Sea blue carpet
Other guests at the premièred include Honor Blackman, Jerry Hall, Richard E Grant and violinist Vanessa Mae.
Master and Commander: The Far Side of the World is primarily based on one of 20 seafaring stories by popular British author Patrick O'Brian, who died in 2000.
It sees Russell Crowe plays a naval hero, leading a crew of 197 men into battle against the French.
Crowe arrived at the screening with pregnant wife Danielle Spencer
Organisers of the première gave it a nautical theme, swapping the traditional red carpet for a sea blue one, and erecting flame-firing cannons and water
The typical British winter weather also helped with the water theme, but the rain did not stop hundreds turning out to cheer Crowe and the cast.
James D'Arcy, who plays Lt Tom Pullings, commented the weather was "reminiscent" of what the cast endured during filming.
"We were soaked, we were absolutely soaked for about 11 days. They had
massive dump tanks, which were like big barrels on a slide. They opened
themselves up and you saw the water about half a second before it came.
"I have to say that the costumes were not exactly water resistant so once you
were wet at about 9 o'clock in the morning, that was it. You just stayed wet for
the rest of the day."
Much of the film was shot in a six-and-a-half acre tank in Mexico where director James Cameron sunk the Titanic.
The film is already attracting Oscar interest, with Crowe and
Bettany winning US critics' plaudits, and cinematographer Russell Boyd praised for the lush visuals.
It is released in London on 21 November and nationwide on 28 November.