Seaplane Tender 1502 was built in 1942 and saw active wartime service. She was decommissioned in the mid 1950s and bought by a private owner for whom she was operational for several years. Having fallen into disrepair in the late 1990s she was bought and restored by British Military Powerboat Trust and has been based at Portsmouth Historic Dockyard since 2009. The vessel astern is Harbour Launch (Diesel) D49.