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chart upgrade
I recently got a new navionics chart chip for my plotter. my units are 4 years old and figured I was due. and holy s#^&#^&#^&#^& there is so much more detail. countour lines by the 1' when u zoom in. I've found so much new structure and drop offs I've never knew of. on every trip ive marked locations worthy of exploring. do yourself a favor if its been awhile and spend the $100
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