Abstract
In the sea partically covered by ice, ice pieces are swaied by waves propagating from the open sea area, and hit the structures with the speed of order of wave motion. To evaluate this impact ice force, the experiments were performed using plastic plate instead of real ice to examine the followings. 1) Wave attenuation under the ice cover. 2) Wave velocity under the ice cover. 3) Transportation of ice pieces caused by wave propagetion.
