| 摘要 |
A hull construction for a board useful in water sports, and a board incorporating such a hull, the hull incorporating a pair of air intake chambers extending from the forward end thereof, in the nature of parallel grooves which are mirror images of each other in the axis of symmetry of the hull, to beyond the hull center in the direction of the following end of the hull, a pair of following end grooved vacuum chambers and a strip of ungrooved hull between the ends of the air intake chambers and the vacuum chambers.
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