Abstract
It is cralified that doubly placed submerged break waters reduce the incident wave height effectively where the tidal range is small.
Coastal structures constracted in Ohotuku Sea coast of Hokkaido have been attacked by water waves and drifting ice floes. In this paper, the authors cralified the stability of armor stones on doubly placed submerged breakwaters whitch are attacked by waves and ice floes through systematic experiments.
