| 摘要 |
PURPOSE:To perform appropriate moorage for the freezing season and channeling season respectively by forming the bow, as a waterline surface shape, into the arc-like shape, and connecting, in channeling season, an additional buoyant body to the bow of a mooring structure main body which is moored in swiveling configuration around the center of said bow as the waterline surface shape. CONSTITUTION:The bow, at least as a waterline surface shape, of a mooring structure main body 1 is formed like an arc, while the stern is reduced toward the rear and moored in swiveling configuration around the center of an arc at the bow. During the freezing season, the main body can sufficiently stand the force of floating ice by its arc-shaped bow. In channeling season, through being connected by an additional buoyant body 2, the tip part of which is so shaped as to have small resistance to the waves, not only the length of a hull as a whole mooring structure is enlarged but also the cycle of keeping up with the waves is lengthened so that its rolling and pitching can be alleviated.
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