Built in the USA, R. R. Grant’s Aerostable hydroplane of 1913 featured a device whereby the angle of incidence could be changed while in flight. The operator turned a small wheel when changing or adjusting for the proper angle. The wing framework was built of white ash and steel tubing covered with Goodrich alumina cloth. The floats were of the catamaran type, each two ft wide by 21 ft long. Each pontoon was divided into five watertight compartments.

 

Engine: Emerson two-cycle, 100 hp

Wingspan: 42 ft

Length: 41 ft

Weight: 1600 lb