1. Technical Development Center, Ube Industries, Ltd., 1-6 Okinoyama Kogushi, Ube, 7558633, Japan.
2. Structural Engineering Field, Port and Airport Research Institute, National Institute of Maritime, Port and Aviation Technology.
3. Department of Marine Electronics and Mechanical Engineering, Tokyo University of Marine Science and Technology.
4. Department of Mathematical Science and Advanced Technology, Japan Agency for Marine-Earth Science and Technology.
5. Research Institute for Marine Resources Utilization Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology.
6. Department of Civil and Environmental Engineering, Tokyo Institute of Technology.