Charts. Avacha Bay and approaches, Kamchatka Pena., east coast, Asia, original survey by U. S. S. Vincennes in 1855 and from English and Russian authorities, scale 1° lat.=14.4 in.; with Enlarged plan of Avacha Bay, scale naut. m.=1 in.; and Petropavlovsk Harbor, from Russian survey in 1896, scale 1,000 yds.=3.95 in.; chart 54.