Here is how:www.navionics.com/en/plotter-tutorial/lowrance. You can print these instructions before you go to your boat or read them on your phone while you are onboard next to your sonar.
Only Navionics accepts sonar logs from all major brands including most models of Humminbird (DAT and GPX on all models, GPX only on ION and Onix),Raymarine (SDF, NMEA, GPX) and Garmin (ADM). Check Plotter Sync feature embedded in Navionics mobile apps for iPhone and iPad. Learn more abouthow to record sonar logs.
View SonarCharts™ on most any device: • On GPS plotter, it’s included with Platinum+, and HotMaps Platinum for compatible plotters. Owners of any Gold, Silver, Marine & Lakes USA, and HotMaps Premium cards can have it with Navionics Updates. • On mobile, SonarCharts™ is included in Navionics+. Now available with iPhone, iPad,, Android phone and tablet, and on Windows tablet and PC. • View on ourWebApp any time. It’s free and convenient!