I posted this also in the Atlantic/Caribbean sectioin but since it pertains to navigation
, I figured I'd post it here also...
Ok, I picked up some plotting sheets
(always nice to learn something new), and also found a chart that covers the S.E. Coast of USA including the bahamas
, 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 two points. By the way, I'll be ordering the Garmin
chip as backup.