Navionics Platinum cartridges feature electronic chart data with the familiar appearance of a paper chart plus much, much more. 

3D and photographic chart views with satellite-derived cartography allows panoramic viewing.  The best bathymetric chart plotting brings the ocean floor to life. 

Enhanced port and service guides make the most of your landfalls along with detailed road and highway maps.  An extended wrecks database plus a geo-referenced Coast Pilot helps you navigate to some of the best fishing data there is.

Navionics uses the largest scale charts available to provide accuracy and best detail of a given area.  All navigation aids available are included as well as detailed depth contours.  "Local knowledge" is routinely added to enhance even the most detailed cartography.