ホタテ貝養殖漁船における漁労作業用係留装置の動揺軽減効果に関する研究

摘要

ホタテ貝養殖業は北海道渡島半島内浦湾（通称噴火湾）で盛んである。ホタテ貝養殖に従事する漁船は10GT未満で、生産時期が厳冬期なので時化た時でも漁労作業を余儀なくされる。そのため、船体には漁労作業を安全に行うために十分な復原力が要求される。%Fishing boats for the scallop cultivation in Hokkaido, Japan are small less than 10GT and harvest time of scallop is in winter season. As the fishing boats are moored to the big scale scallop cultivation facilities to do fishing work, the ship inclines about 6-10 degrees into mooring side. Then, we aimed to develop the mooring device to reduce ship motion. If the large amplitude motion would generate under such inclining condition, the ship would be dangerous for capsize. In this study, we made the mooring device model for the fishing operation, that installed oil damper as absorber for ship motions. And we conducted model experiments under regular waves. As a result, the effect of the motion reduction was suggested by the use of the proposed mooring device.