Sopwith Admiralty Type 137

The Sopwith Admiralty Type 137, described in the same article as the larger Type 138, was one of a pair of single-engine, two-seat naval biplane floatplanes that Sopwith built to a British Admiralty order in 1914. The contract asked for two similarly laid out aircraft with engines of very different power, so the Type 137 was the smaller, with a two-bay wing and an inline water-cooled Austro-Daimler engine, while the Type 138 carried a radial Salmson. Both were handed over in August 1914 and flew from the Solent area for early torpedo-dropping experiments until they were withdrawn from use in January 1916. The Type 137 was badly damaged in September 1914 and later re-engined to match the Type 138.