| 摘要 |
<p>The invention relates to a device including flexible, wind-inflatable canvas structures (2) applied onto both surfaces of a sail (1), which makes it possible, during navigation, to change the profile of the sails by extending the upper surface thereof, thereby increasing the sailing force of said sail. The structures (2) are provided in the form of compartments associated with the sail (1) and have openings that enable air to be drawn in and the compartments to be inflated.</p> |
