| 摘要 |
PURPOSE:To firmly support booms regardless of the direction of the wind, by erecting two posts on a hull, using a connecting bar to couple the booms to each other, anchoring guys to the ends of the booms, crossing the guys with each other, and winding the guys on winches. CONSTITUTION:When winches 15, 15a are rotated in directions shown by arrows, a guy 16a is wound by the winch 15a and another guy 16b is unwound from the winch 15 so that a connecting bar 18 is moved in a direction C and booms 13, 13a and triangular sails 14, 14a are swung in directions (a). When the winches 15, 15a are rotated inversely to the directions shown by the arrows, the triangular sails 14, 14a are swung in directions (b). When a wind blows on the triangular sails 14, 14a in a direction A, a tension acts to the guy 16b. When the wind blows on the triangular sails in another direction B, a tension acts to the other guy 16a. For these reasons, the booms 13, 13a are not turned by the wind.
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