Charts. Naoetsu Harbor (Naoetsu Ko), northwest coast of Honshu, Japan, from Japanese survey in 1892, scale naut. m.=3 in., natural scale 1:24,944; Niigata Harbor (Niigata Ko), northwest coast of Honshu, Japan, from Japanese surveys to 1930, scale naut. m.=2.9 in., natural scale 1:25,648; chart 1886.

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