| 摘要 |
PURPOSE:To reduce the weight of a post, increase the available area of a deck and prevent a triangular sail from being turned by the wind, by erecting posts as a gate, using stays to fix the posts, and providing a boom swinger under the triangular sail. CONSTITUTION:Posts 11, 11a erected on a hull are conjoined to each other at the upper ends by a coupling member 13 and disposed as a gate. Stays 12a, 12b are tightly laid forward and backward from the upper ends of the posts 11, 11a. A boom swinger 41 is provided under a triangular sail 61 so that a boom 21 can be swung by low torque and that the triangular sail is kept from being turned when the direction of the wind changes.
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