*Yusuke Yokota¹, Basara Miyahara³, Toshimichi Otsubo⁴, Yasuhiro Murayama⁵, Hiroshi Munekane³, Tadashi Ishikawa² (1.Institute of Industrial Science, The University of Tokyo, 2.Hydrographic and Oceanographic Department, Japan Coast Guard, 3.Geospatial Information Authority of Japan, 4.Hitotsubashi University, 5.National Institute of Information and Communications Technology)

*Shun-ichi Watanabe¹, Yusuke Yokota², Tadashi Ishikawa¹, Yuto Nakamura¹ (1.Hydrographic and Oceanographic Department, Japan Coast Guard, 2.Institute of Industrial Science, University of Tokyo)

*Tadashi Ishikawa¹, Yusuke Yokota², Shun-ichi Watanabe¹, Yuto Nakamura¹ (1.Hydrographic and Oceanographic Department, Japan Coast Guard, 2.Institute of Industrial Science, the University of Tokyo)

*Yusuke Yokota¹, Tadashi Ishikawa², Shun-ichi Watanabe², Yuto Nakamura² (1.Institute of Industrial Science, The University of Tokyo, 2.Hydrographic and Oceanographic Department, Japan Coast Guard)

*Yusuke Yokota¹, Tadashi Ishikawa², Shun-ichi Watanabe², Yuto Nakamura² (1.Institute of Industrial Science, The University of Tokyo, 2.Hydrographic and Oceanographic Department, Japan Coast Guard)

*Yusuke Yokota¹, Tadashi Ishikawa², Shun-ichi Watanabe², Yuto Nakamura² (1.Institute of Industrial Science, The University of Tokyo, 2.Hydrographic and Oceanographic Department, Japan Coast Guard)

*Yuto Nakamura¹, Yusuke Yokota², Tadashi Ishikawa¹, Shun-ichi Watanabe¹ (1.Hydrographic and Oceanographic Department, Japan Coast Guard, 2.Institute of Industrial Science, University of Tokyo)

*Yusuke Yokota¹, Tadashi Ishikawa², Basara Miyahara³, Toshimichi Otsubo⁴ (1.Institute of Industrial Science, The University of Tokyo, 2.Hydrographic and Oceanographic Department, Japan Coast Guard, 3.Geospatial Information Authority of Japan, 4.Hitotsubashi University)

*Tadashi Ishikawa¹, Yusuke Yokota², Shun-ichi Watanabe¹ (1.Hydrographic and Oceanographic Department, Japan Coast Guard, 2.Institute of Industrial Science, the University of Tokyo)