The Grumman G-21 Goose is an amphibious flying boat designed by Grumman to serve as an eight-seat "commuter" aircraft for businessmen in the Long Island area. The Goose was Grumman's first monoplane to fly, its first twin-engined aircraft, and its first aircraft to enter commercial airline service. During World War II, the Goose became an effective transport for the US military, as well as serving with many other air forces. During hostilities, the Goose took on an increasing number of combat and training roles.
Grumman G-21 Goose
Preserved ex-British JRF-6B Goose in U.S. Navy JRF-1 markings
McKinnon G-21G Turbo Goose conversion with 680 shp (510 kW) Pratt & Whitney Canada PT6A-27 turboprops
Royal Canadian Air Force Goose
An amphibious aircraft or amphibian is an aircraft that can take off and land on both solid ground and water. They are typically fixed-wing, though amphibious helicopters do exist as well. Fixed-wing amphibious aircraft are seaplanes which are equipped with retractable wheels, at the expense of extra weight and complexity, plus diminished range and fuel economy compared to planes designed specifically for land-only or water-only operation. Some amphibians are fitted with reinforced keels which act as skis, allowing them to land on snow or ice with their wheels up.
A Canadair CL-415 amphibian with retractable wheels
Vickers Viking - an early amphibian.
replica of Osa's Ark - a Sikorsky S-38 used to explore Africa in the 1930s.
Italian Air Force Piaggio P.136 during takeoff retracting the wheels that make it an amphibian.