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File:Portolan windrose (plain).jpg

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Description Detail of a plain unadorned 32-point wind rose (or compass rose) on an anonymous Genoese portolan chart, c.1325-50 (held by the Library of Congress, Washington DC). As is standard on portolan charts, the rhumb lines emanating from the center are color-coded: black for the eight primary winds (N, NE, E, SE, S, SW, W, NW),green for the eight half-winds (NNE, ENE, etc.) and red for the sixteen quarter-winds.
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This is a retouched picture, which means that it has been digitally altered from its original version. The original can be viewed here: Mediterranean chart fourteenth century2.jpg: .


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This image is a derivative work of the following images:

  • File:Mediterranean_chart_fourteenth_century2.jpg licensed with Cc-pd-mark-footer, PD-old
    • 2009-01-18T02:53:17Z Durova 5486x4009 (18079272 Bytes) {{Information |Description=Anonymous nautical chart in portolan style probably drawn in Genoa. Covers Mediterranean Sea from the Balearic Islands to the Levantine coast; also covers western part of Black Sea. Oldest origi

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Date/TimeThumbnailDimensionsUserComment
current15:01, 28 June 2011Thumbnail for version as of 15:01, 28 June 2011397 × 447 (87 KB)wikimediacommons>WalrasiadBetter compass rose from the same anonymous Genoese map (132-50).

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