旅客船設計における耐航性能評価に関する研究(第5報) : 長期航海を含む実船実験による船酔率の計測とパラメトリック横揺れの出現

抄録

The authors measured ship motions and the vomiting ratio of passengers on a cruise ship in three months voyage and on a small ship in short voyage. The results demonstrate that it is possible to estimate the vomiting ratio in fairly good accuracy by the authors' estimation method on the bases of O'Hanlon's experimental data. In the measured data of the small ship, it is observed that the period of rolling is twice as long as that of encounter in following and head seas. Using a numerical simulation using the database of restoring moment varying in wave, the occurrence of parametric resonance is confirmed numerically.