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Pat Shingleton: "The Wind Rose-Part I"

3 years 6 months 1 week ago July 12, 2013 Jul 12, 2013 Friday, July 12 2013 July 12, 2013 3:00 AM in Pat Shingleton Column
By: Pat Shingleton


Without charts, the only means to determine a sailor or explorer's location was celestial navigation. As noted in a previous column, the captain's chart was little more than the ship's log. On old maps, a circular directional emblem is a "wind rose." Mariner's in Homer's time identified direction with wind and early cartographers were part artist, part astronomer, combining wind direction into the "wind rose." Once nautical charts were initiated in the fourteenth century, the four primary winds were schematically positioned around a circle that represented the horizon. Always present was the "wind-rose," that contained a radial set of points, such as a star, directed into each wind position. The rhumb lines radiated from the central point of the rose, connected to each directional point. More Saturday.

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