United States, Hydrographic Office. From the latest information to 1923. Coordinates approximate and based on Greenwich meridian. Depths shown by soundings; relief by form lines. 1940... U.S. Navy Hydrographic Office,.
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United States, Hydrographic Office. From the latest information to 1923. Depths shown by soundings. 1935 variation compasses. Shows low water areas. References larger scale charts. No... U.S. Navy Hydrographic Office,.
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],.