HMSML Gleaner (H86) is the smallest commissioned vessel in the Royal Navy with a length of just under 15 metres and a ship's company of just 8 (2 officers and 6 ratings). She is currently based in Devonport, Plymouth. The ship prefix "HMSML" stands for Her Majesty's Survey Motor Launch. She is the sixth ship to bear the name Gleaner and was commissioned on 5 December 1983. With a top speed of , Gleaner was designed to conduct inshore surveys along the south coast of England, though she has since surveyed all around the coastline of Great Britain and visited various ports in Europe.