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Okinotorishima was added under “Nakanotorishima,” which had been placed under the jurisdiction of Ogasawara Branch Office, Tokyo Prefecture in 1926 (Ref. 1), thus bringing Okinotorishima also under the jurisdiction of Ogasawara Branch Office (Ref. 2). Through this designation, by the time of the publication of Nautical Chart No. 2101 in 1938, the island was identified on the chart as Okinotorishima (Ref. 3).
“Nakanotorishima” was discovered by Yamada Teizaburo, which corresponded to “Ganges Island.” It had been placed under the jurisdiction of Ogasawara Island of Tokyo Prefecture in 1908. (Ref. 4) However, subsequent precision measurement made clear that Nakanotorishima did not actually exist, and in 1946 it was deleted from charts. (Ref. 5)
“Nakanotorishima” was discovered by Yamada Teizaburo, which corresponded to “Ganges Island.” It had been placed under the jurisdiction of Ogasawara Island of Tokyo Prefecture in 1908. (Ref. 4) However, subsequent precision measurement made clear that Nakanotorishima did not actually exist, and in 1946 it was deleted from charts. (Ref. 5)
Ref. 1: “Ministry of Home Affairs Notification No. 82 of 1926,” Official Gazette (June 5, 1926; No. 4134)
Ref. 2: “Ministry of Home Affairs Notification No. 163 of 1931,” Official Gazette (July 6, 1931; No. 1354)
Ref. 3: “Hydrographic Department Nautical Chart No. 2101: Tokyo Bay to Truk Islands” (1938)
Ref. 4: “An uninhabited island situated 560 nautical miles away from the Ogasawara Islands being named Nakanotori-shima and was placed under the jurisdiction of the Ogasawara Islands Office, Tokyo Prefecture,” Kobun Ruishu (Various Official Records Compilations), 32nd ed. (1908)
Ref. 5: “Hydrographic Notification No. 46,” Official Gazette (November 22, 1946; No. 5959)
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