MGB (Motor Gun Boat)-81 was commissioned and accepted in 1942.Capable of 42 Knots,she and her sisters were involved in action in the English Channel,attacking enemy torpedo boats and landing secret agents on occupied soil.She was later involved in D-Day operations.She is owned and operated by the Portsmouth Naval Base Property Trust.
ML1387, HMS Medusa, is a Harbour Defence Motor Launch built in Poole in 1943, one of 480 vessels designed to provide an offshore anti-submarine screen for harbours. Entirely built of wood, and powered by diesel engines, they were not fast but had huge endurance. The orginal concept was for them to be transported to where they were needed as deck cargo but soon they were making the passages themselves from the UK to the Mediterranean, West Indies, South Africa and the Far East.