漁船の荷役における許容動揺量と許容波浪条件について

抄録

A rate of effective working days is calculated by frequency of wave height which is lower than the allowable value. The allowable ship motions are necessary for calculating the allowable wave height. Both allowable values for cargo ship and tanker are proposed by Ueda, but those for fishing boat are not proposed.
The purpose of this study is to propose the allowable ship motions for fishing boats by questionnaire for fisherman, and the allowable wave height for fishing boats by simulation of ship motions. The investigation of questionnaire shows that the allowable ship motions of fishing boats in Hokkaido are ±0.5m for surging, +0.5m for swaying and ±0.5m for heaving. And the simulation result of ship motion shows that the allowable wave height depends on size of ships and wave period.