Heinkel HD 16

The Heinkel HD 16 was a single-engine biplane torpedo aircraft developed by the German company Ernst Heinkel Flugzeugwerke in the 1920s and built under licence by Svenska Aero in Stockholm, Sweden. It was an improved version of the earlier Heinkel HD 14. Two examples were built and sold to the Swedish Navy, which designated them T 1. They were fitted with an Armstrong Siddeley Leopard radial engine of 666 horsepower and carried a Swedish-built 45 centimetre torpedo of about 800 kilograms, together with a 7.7 millimetre machine gun. The pilot and observer originally sat side by side, but the cockpit was later rearranged into a tandem layout to give the observer a better view. The aircraft had a crew of three, a length of 13 metres and a wingspan of 18 metres.