Pilot chart of the South Indian Ocean / by M.F. Maury, L.L.D. Comdr. U.S. Navy, Superin'dt. of U.S.N. Observatory, Washington ; compiled from materials in the Bureau of Ordnance and Hydrography by Lieuts. J.J. Guthrie, W.C. West & J.H. Carter, U.S.N.Maury, Matthew Fontaine, 1806-18731859The 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 windcartographic