The termination of cargo loading and unloading often occurs in Tsurga harbor in winter. One of these causes is induced to the rolling motion of ship caused in the jet flow from slit caisson, and one of others is the sympathizing motion of the roll of ship in the swell.
The paper shows the countermeasure for termination of cargo loading and unloading.In the study, the reduction of jet flow form theslit caisson is considered. The rolling motion of ship decreased by a part ofslits covered in rigid wall. The cover of the slit of caisson found out the effective method to protect the termination of cargo loading and unloading.