Download the coverage you need. Get
detailed charts for lakes and offshore areas, plus
receive 12 months of Freshest Data updates for
your charts. Includes new SonarCharts (high
definition bathymetry maps), Community Edits,
and more. Simply plug the Navionics+ PLUS
chip into your PC or Mac. Choose Compact
Flash (CF) or Micro Secure Digital (MSD) format.