HMS "Gnat" was a Royal Navy . She was built by Lobnitz and launched in 1915. "Gnat" saw service during the First World War as part of a flotilla operating on the Tigris and Euphrates rivers. After the war, the vessel was transferred to China, where in 1927, "Gnat" took part in the Nanking Incident. "Gnat" began the Second World War still in China, but was towed to the Mediterranean Sea in 1940. There, the gunboat took part in an assault on Tobruk before being torpedoed by a German submarine. Though "Gnat" did not sink, and was beached at Alexandria, Egypt where the vessel was used as an anti-aircraft platform. The vessel was declared a constructive total loss and scrapped in 1945.