초록 ▼

A windsurfing board with a hull, a mast and a wishbone or other spar for winging out the sail has side fin plates with lower stabilizing faces and an adjustment system for steplessly changing the level of such fin plates, or only producing two positions of adjustment so that such fin plates are unde

A windsurfing board with a hull, a mast and a wishbone or other spar for winging out the sail has side fin plates with lower stabilizing faces and an adjustment system for steplessly changing the level of such fin plates, or only producing two positions of adjustment so that such fin plates are under or clear of the water. The lower position under the water is designed for producing better planing properties of the windsurfer while the top position is used for sailing under only a light wind.

대표청구항 ▼

In a windsurfing board comprising a surfboard-like hull, means for joining a sail to the hull, fin plate means with stabilizing faces on at least two sides and the stern part of said hull, and single foot operated adjusting means for adjusting the level of said fin plate means by a person on top of

In a windsurfing board comprising a surfboard-like hull, means for joining a sail to the hull, fin plate means with stabilizing faces on at least two sides and the stern part of said hull, and single foot operated adjusting means for adjusting the level of said fin plate means by a person on top of the hull; wherein said fin plate means are substantially horizontal when viewed in the direction normal to a median line of said hull and form a smooth-unbroken outline with said hull; and wherein said adjustment means has a lever extending upwardly through a portion of said hull; said adjusting means further has two limiting end positions, an upper position for placing the fin plate means above the water line in a loaded condition and a lower position for placing the fin plate means below the water line, thereby enabling the hull shape to be changed between a displacement hull and a gliding hull.