NOTE.—Contains, on reverse, Highest velocity of wind, 1900-10.—Distribution of wireless telegraph stations on Great Lakes.—Approximate location of submarine signal bell stations, Mar. 1911.—U. S. wireless telegraph regulations.—Location of storm warning towers and flagstaffs.
The meteorological charts of the north Atlantic, north Pacific, and Indian oceans, and the Great Lakes, monthly, and of the south Atlantic and south Pacific oceans, quarterly, are issued by the Weather Bureau for gratuitous distribution to cooperating shipmasters and others interested in ocean meteorology.