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M. Sato
Hydrographic Department, Japan Coast Guard
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A. Aasada
Institute of Industrial Science, the University of Tokyo
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M. Mochizuki
Institute of Industrial Science, the University of Tokyo
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M. Katayama
Hydrographic Department, Japan Coast Guard
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K. Koyama
Hydrographic Department, Japan Coast Guard
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N. Sasahara
Hydrographic Department, Japan Coast Guard
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K. Kawai
Hydrographic Department, Japan Coast Guard
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S. Toyama
Hydrographic Department, Japan Coast Guard
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K. Fukano
Hydrographic Department, Japan Coast Guard
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T. Hatagami
Hydrographic Department, Japan Coast Guard
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T. Yabuki
Hydrographic Department, Japan Coast Guard
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H. Nakagawa
Hydrographic Department, Japan Coast Guard
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A. Sengoku
Hydrographic Department, Japan Coast Guard