The pilot charts were released as series C of Maury's "Wind and current charts", series A-F. These charts were designed for sailing ships and recorded wind direction observations made by mariners on previous voyages. For complete discussion, see "The wind
Publisher:
United States Hydrographical Office,
Subject (Geographic):
Indian Ocean--Maps
Subject (Name):
Carter, J. H, Guthrie, John Julien, United States. Bureau of Ordnance and Hydrography, United States. Hydrographic Office, and West, Wm. C. (William C.)
Subject (Topic):
Nautical charts--Indian Ocean and Winds--Indian Ocean--Maps