ISTEC’s redeveloped Parasailor is a breakthrough in sail design and has set a new standard in downwind sailing.

The special features of the Parasailor means that it is a replacement for both traditional spinnakers and also gennakers.

The sail is divided into an upper and a lower section. This allows a profiled, three-dimensional, pressure–filled wing to be positioned into the air current of the opening between the two sections. This wing was developed in a similar way to a paraglider or kite surfer ram air kite using a special profile and it creates considerable forward motion (1) and lift (2) – see diagram . This decreases the horizontal force (3) on the spinnaker head and the resulting moment, and relieves considerably the pressure on the bow. Because of the internal force, the wing part of the Parasailor acts as lateral support and stabilizes the sides.

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