Her Majesty's Yacht Britannia, also known as the Royal Yacht Britannia, is the former royal yacht of the British monarch, Queen Elizabeth II, in service from 1954 until 1997. She was the 83rd such vessel since King Charles II acceded to the throne in 1660, and is the second royal yacht to bear the name, the first being the racing cutter built for the Prince of Wales in 1893. During her 43-year career, the yacht travelled more than a million nautical miles around the globe.