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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Old charts and traditional navigation methods
From: Greg Rudzinski
Date: 2014 Aug 13, 04:37 -0700
From: Greg Rudzinski
Date: 2014 Aug 13, 04:37 -0700
Jackson,
The lines look like compass rose extensions (32 points) from key points about the chart. All that is needed is a pair of dividers to plot a parallel course off any of the 32 points of the compass anywhere on the chart.
http://en.wikipedia.org/wiki/Points_of_the_compass#32_cardinal_points
Greg Rudzinski
