Extraordinary high waves associated with Typhoon No. 1721 hit the Shimizu coast in Suruga Bay on October 2017, resulting in severe damage of No. 2 breakwater out of four breakwaters placed along the shoreline. Severe erosion also occurred along with wave overtopping over the seawall and the deposition of gravel to the backward of the seawall. Concrete blocks composed of No. 1 breakwater upcoast of the L-shape groin which was under construction at that time were widely scattered. In this study, the wave condition during Typhoon No. 1721, and topographic changes before and after the typhoon waves were investigated. Furthermore, the Narrow Multi-beam survey was carried out to study the damage of the breakwaters.