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Old 06-20-2012, 09:10 AM
bmar444 bmar444 is offline
Minnow
 
Join Date: Jun 2012
Location: Royal Oak, MI
Posts: 5
Default GPS positioning matching base map

I am running an HDS-7 Gen-1 on my boat and have a 2009 LakeMaster chip. Problem I am finding is that my location rarely if ever matches up to the contour lines and it is not even close. I can run perpendicular to the contour lines and it can be 50 - 100 ft, before I reach the depth change.

Any ideas?
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