Grumman G-65 Tadpole


The Grumman G-65 Tadpole was an American prototype light amphibian designed and built by Grumman.[1] Only one was built and it did not enter production. It was later developed into a family of amphibious aircraft by David Thurston.[1]

G-65 Tadpole
Grumman G-65 Tadpole.jpg
Role Recreational amphibian
Manufacturer Grumman
First flight 7 December 1944
Number built 1
Variants Colonial Skimmer

Design and developmentEdit

Part of a project by Grumman to find types to produce once World War II had ended, the G-65 Tadpole was designed by a team under the direction of Hank Kurt.[1] The Tadpole was a two or three-seat shoulder-wing cantilever monoplane with retractable tricycle landing gear.[1] It was powered by a 125 hp (93 kW) Continental C125 engine above the rear fuselage driving a pusher propeller.[1] Kurt first flew the Tadpole on 7 December 1944.[1] The G-65 Tadpole postwar was not put into production for numerous reasons, those to include; the over anticipation of a private aviation market, less costly military surplus aircraft, and the inability to compete in the amphibious aircraft market.[2] Although not developed by Grumman, one of the design team, David Thurston, later developed the design into a family of amphibians including the Colonial Skimmer and Lake Buccaneer.[1]


Data from Grumman Aircraft since 1929[3]

General characteristics

  • Crew: 1
  • Capacity: 2 passengers
  • Length: 23 ft 6 in (7.16 m)
  • Wingspan: 35 ft 0 in (10.67 m)
  • Height: 8 ft 3 in (2.51 m)
  • Wing area: 155 sq ft (14.4 m2)
  • Empty weight: 1,450 lb (658 kg)
  • Gross weight: 2,100 lb (953 kg)
  • Powerplant: 1 × Continental C125-3 air-cooled six-cylinder horizontally-opposed engine, 125 hp (93 kW)


  • Maximum speed: 125 mph (201 km/h, 109 kn)
  • Cruise speed: 103 mph (166 km/h, 90 kn)

See alsoEdit

Related development

Related lists



  1. ^ a b c d e f g Orbis 1985, p. 2037
  2. ^ Visschedijk, 2013
  3. ^ Francillon 1989, pp. 260–262


  • Francillon, René J. (1989). Grumman Aircraft since 1929. London: Putnam. ISBN 0-85177-835-6.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.

  • Visschedijk, Johan. "No. 12042. Grumman G-65 Tadpole (NX41828)". 1000 Aircraft Photos.