The Gyro-Boat is a further variant of the Gyro-Glider, in which the basic free-turning rotor system, known as the Roto-sail, is mounted on any standard small dinghy. The result is literally a flying boat, intended to be towed above water by a motor boat.

The two-blade steel and plywood rotor has a diameter of 6.10m and disc area of 29.2m². Each blade has an area of 1.0m². When fitted to a 3.66m aluminium dinghy weighing 45kg, the complete Gyro-boat has an empty weight of 68kg and a loaded weight of 147kg carrying one person or 227kg carrying two people.

It takes off when towed at a forward speed of 37km/h, cruises at 55-110km/h and lands at 11km/h.

The prototype Gyro-Boat flew for the first time on April 25, 1956, and the first production model on July 8, 1956. The 1959 version can be fitted with stabilizing pontoons on outriggers for rough water operation.

Jane's All the World's Aircraft, 1959-60

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