Abstract
Several fishing ports in Sado Island, especially on its east part, were damaged extensively by high waves on February, 2008. This study investigates high waves disaster damage of fishing ports in Sado from conditions of the weather and numerical simulation by energy balance equation . As a results, it became clear that high and long period waves attacked from NNE with little sheltered area of capes, and impulsive wave pressure acted under the influence of submarine topography around damaged fishing ports. Moreover, it was suggested that cautions are required for a future high waves from NNE on some fishing ports designed by waves from N.
