Pilot chart for Cape Horn nautical chart

Shows prevailing wind direction by month.
"Series C."
The pilot charts were released as series C a part 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 and current chart series produced by Matthew Fontaine Maury," by Marc I. Pinsel, in Navigation : Journal of the Institute of Navigation, v. 28, no. 2 (Summer, 1981), p. 123-137.
Copy imperfect: Sheets 1 and 2 torn and repaired along fold-line on tracing paper.
Includes diagrams and a note in map area with signature of M.F. Maury.
Each sheet numbered in upper left margin, e.g.: 117, 118.
Available also through the Library of Congress Web site as a raster image.