1. Indian Ocean
United States, Hydrographic Office. Depths shown by soundings. Compasses. Magnetic variation curves are for 1940. Includes longitudinal and latitudinal lines, variation and revision c... U.S. Navy Hydrographic Office,.
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United States, Hydrographic Office. Compiled from the latest information. Depths shown by soundings. 1935 variation compass. Includes tidal information. Shows low water areas, small i... U.S. Navy Hydrographic Office,.
3. Indian Ocean
United States, Hydrographic Office. Depths shown by soundings. Compasses. Magnetic variation curves are for 1935. Includes longitudinal and latitudinal lines, variation and revision c... U.S. Navy Hydrographic Office,.
United States, Hydrographic Office. Depths shown by soundings; relief by hachures and spot heights. Compass rose. 1938 variation. Includes longitudinal and latitudinal lines. Shows pe... U.S. Navy Hydrographic Office.
United States, Hydrographic Office. From British surveys between 1854 and 1882 with additions from United States and Fiji Govt. surveys. Depths shown by soundings; relief by hachures ... U.S. Navy Hydrographic Office,.
United States, Hydrographic Office. From British surveys between 1878 and 1881 (with additions from Fiji Govt. surveys to 1915). Depths shown by soundings; relief by hachures and spot... U.S. Navy Hydrographic Office,.
United States, Hydrographic Office. From all available authorities. Depths shown by soundings; relief by hachures and spot heights. Compass rose. Magnetic variation curves are for 193... U.S. Navy Hydrographic Office,.
United States, Hydrographic Office. From a survey by the U.S. Ex. Ex. [sic] in 1839. Depths shown by soundings; relief by hachures and spot heights. 1940 variation compasses. Shows sm... U.S. Navy Hydrographic Office,.
United States, Hydrographic Office. Compiled from the latest information. Depths shown by soundings. 1935 variation compasses. Includes Tidal Information table. Textual descriptions, ... U.S. Navy Hydrographic Office,.
10. Australia
United States, Hydrographic Office. and Great Britain, Admiralty. From British surveys to 1913. Depths shown by soundings; relief by hachures and spot heights. 1915 variation compasses. Shows coasts, low water are... U.S. Navy Hydrographic Office,.