Charts. Anbetu Hakuti, Karahuto, west coast, Nippon, surveys of Imperial Japanese Navy, 1920 & 1939; scale 1:25,000; Nisisakutan Hakuti, Karahuto, west coast, Nippon, survey of Imperial Japanese Navy, 1939, scale 1:30,000; H. O. Miscel. no. 10,010-145.