Grumman JF Duck

The Grumman JF Duck was an American single-engine amphibious biplane built by Grumman for the United States Navy in the 1930s, whose main pontoon was part of the fuselage so that it almost counted as a flying boat. The XJF-1 prototype first flew on 24 April 1933, and the first production aircraft were delivered from May 1934. Ducks served as general utility amphibians for photographic, target-towing, scouting and rescue work, with variants for the United States Coast Guard and an armed export version for Argentina. The JF was built from 1934 until 1936, when production switched to the improved J2F Duck and later variants.