This report presents the system and the design method of the automatic design system for curtain wall type breakwater.
　Using this system, we are able to design curtain wall type breakwater.
　This system has two functions as follows:
(1) To calculate stresses of piles, bearing capacities of piles, deflections of superstructures and the costs required for the structures.
(2) To calculate the dimension of piles which minimize the costs of structures being given allowable stresses and deformations.