Japan, Kaijō Hoanchō., Suirobu. and Great Britain, Admiralty. Compiled from the United States chart, 1933. Depths shown by soundings; relief by form lines and spot heights. 1939 variation compasses. Includes t... Japan Hydrographic Office],.
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Japan, Kaijō Hoanchō., Suirobu. Compiled from the United States charts, 1922 & 32. Depths shown by soundings and lines; relief by spot hachures. 1940 magnetic variation compasses.... Japan Hydrographic Office ],.