Heinkel He 6
By 1927 the German authorities were becoming less intimidated by the restrictions imposed by the Versailles Treaty, and in that year Heinkel produced the He 6 reconnaissance seaplane. This incorporated much navigational and wireless equipment obviously with a view to future military use. The He 6 was a three/four-seat long-range monoplane, with an enclosed cockpit for the pilot, navigator and radio operator. Powerplant was an 800-hp Packard engine.