| 摘要 |
PURPOSE:To alleviate the force of tidal wave by providing constriction parts to support a lower hull and an upper hull in such a way as to submerge them into water at the draft line position of the hulls for the waiting period in preparation of rough weather. CONSTITUTION:In a marine structure in which an upper hull 1 is supported through plural columns 2 and 3 on a lower hull 4, constrictions 6 are provided for the columns 2 and 3 in such a way as to submerge them in water at the draft position during the waiting period in preparation of rough weather. By this, the upward force of tidal wave is balanced with the downward force of tidal wave and the tidal wave forces are greatly alleviated, so that the reduction in weight and volume, as well as safety, of the marine structure can be enhanced. |
