Stamps charting two centuries of Royal Navy uniforms - from flamboyant frock coats to high visibility jackets - will go on sale today.
The Royal Navy Fleet Diving Squadron launched the special edition release with an underwater photo-shoot at its training tank in Horsea Island, Portsmouth.
Each of the six stamps charts the development of the British naval uniform, beginning with the gold-crested frock coat of an Admiral from 1795, through to the high visibility uniform of a 2009 Flight Deck Officer.
They also feature an 1805 Royal Marine, an Able Seaman from 1880, a 1918 Women's Royal Navy Service Officer and a Second World War Captain.
The new Royal Navy edition is part of the military uniforms stamps series, first issued in 2007 when it featured the British Army and continued last year with the Royal Air Force.