| 摘要 |
PURPOSE:To prevent a drainage device from being protruded from the hull side by providing a swollen and molded recess facing the lower side of a deck floor on the hull side and forming a drainage hole that is opened to the deck floor at the upper side of the recess, then providing a float valve mechanism. CONSTITUTION:A recess 10 that is protruded to the lower side of a deck floor 1 is swollen and molded at the side of the hull 2. The bottom wall 11 of the recess 10 is slantly molded obliquely downward facing the outboard side and a drainage port 13 that penetrates through an upper wall 12 and the deck floor 1 is formed at the upper side. The outboard water is prevented from invading inboard by providing a float valve mechanism 14 at this drainage port 13 and discharging the water on the inboard deck floor 1 outward. As a result, the drainage device section can be arranged inboard and can be prevented from being protruded from the hull side. In addition, the interference of a boat with a quay when the boat comes alongside the quay can be prevented and the sailing resistance can be reduced.
|
