A soft landing breakwater was originally proposed for the site where ground condition is not good but wave condition is rather mild. First design method was proposed in 1991. It was much simplified and suited for limited conditions. That isthe reason why the structure is used only in Kumamoto Port. Nowadays even in Kumamoto Port, the wave condition of the construction site is severer and the limitation of existing method is clarified. In this paper, the results of field loading test done in 2002 are examined to discuss the characteristics of lateral resistance of soft landing breakwater with piles and new design method is proposed.
