| 摘要 |
High-performance extra-wind sail system. Mast having a circular cross-section. Its diameter at the base, taken as unity, decreases linearly down to 0.6 at the head. The sail is bent onto the mast. It is cut flat according to the figure. Camber width = its length exponent 3/2. Its two edges are stitched together. Rotary mast for furling. <IMAGE>
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