Thanks: 
HaHa: 
Lowrance base maps don't have lake depth off set. To my knowledge the Navionic's chip/chips and C-maps don't ether,I think bird has some patent on it or something,surprisingly the Navionic's app has it for smart phones and such.
Crappie Wall Hanger II
Lowrance base maps don't have lake depth off set. To my knowledge the Navionic's chip/chips and C-maps don't ether,I think bird has some patent on it or something,surprisingly the Navionic's app has it for smart phones and such.
Rustyhunter LIKED above post
Reply With Quote