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| Keywords: Portolan windrose (plain).jpg 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 Mediterranean_chart_fourteenth_century2 jpg 2011-06-23 18 11 UTC Mediterranean_chart_fourteenth_century2 jpg anonymous probably Genoan derivative work Walrasiad <span class signature-talk >talk</span> Mediterranean_chart_fourteenth_century2 jpg PD-old Original upload log 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 <nowiki> 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</nowiki> Uploaded with derivativeFX Portolan charts made in the 14th century Compass roses on maps | ||||
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