| 摘要 |
The invention relates to a device for supporting a sail with a variable effective area; for sailboards and boats. It is made up of a main mast 1, on the side of which a secondary mast 5 is mounted on hinges 4. Fixed on the sides of these masts are two polygonal rigid frames 7, 8, over which the sails will be stretched. The assembly unfolds or folds back on itself around the articulation 4. The device according to the invention is intended, in particular, for reducing the effective surface when going about and to increase it during the tacks. <IMAGE>
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