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Ok, I picked uo some plotting sheets (always nice to learn something new), and also found a chart that covers the S.E. Coast of USA including the bhahmas, Bermuda, and Geater Antilles. So my whole trip is on one sheet, plus I have all the local charts for my potential landfalls. Now I'm playing with actual courses. Using my GPS plotter, I plot a course from Marker #4 at the southern tip of Cape Lookout to S.W. Breaker at the southern tip of Hamilton Island,Bermuda. The GPS shows the heading as 110 degrees (true). When I plot the same course on the large chart, it shows the heading as 104 degrees (true). My GPS (garmin gpsmap 276c) is only using the base map not the chip for the Atlantic/Bermuda. Could the base map be this incorrect? Or, is a paper chart covering this large an area just not precise enough? I'd appreciate any of you with chart plotters letting me know what course heading you get between these to points. By the way, I'll be ordering the Garmin MUSO28R Bermuda chip as backup.
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