1) Arai, S., Takagi, M., Nakamura, S. and Matsunaga, K. : On the hydrodynamic forces acting on a box-type vessel (1st report), JSNA of Japan 137 (1975).
2) Bessho, M. and Mizuno, T. : On the oscillation among waves of some types of ocean plat-form, JSNA of West 53 (1976).
3) Glendenning, I. : Energy from waves, Oceanology International '78 (1978).
4) Kim, C. H. and Chou, F. : Motions of a semi-submersible drilling platform in head seas, Davidson Laboratory, Stevens Institute of Technology OE-71-8 (1971).
5) Maeda, H. and Eguchi, S. : On the hydrodynamic forces for shallow draft ships in shallow water (2nd report), JSNA of Japan 139 (1976).