Navionics Platinum Plus 646P+ Lake Michigan Marine and Lake Charts on SD/MSD review and price compare 2025

Platinum Plus provides the most content so you can take full advantage of your chartplotters functionality. Dynamic 3D View allows you to customize exaggeration of key features and adjust pitch to highlight subtle depth changes or better visualize your approach through shallow or narrow channels. Satellite overlay is extremely helpful for improving situational awareness, especially in congested ports and marinas. Find hidden features such as backwater channels that might hold fish. Panoramic port photos let you head into new ports with the confidence of a local with a clear view of marina entrances, dock layouts, and more. View detailed shorelines with marinas, docks and boat ramp locations. Increase your awareness of shallow waters and hazardous areas at any depth level. Consult tides and currents. Fish smarter with up to 1 foot HD contours, you will find the best fishing spots such as wrecks, reefs and fish attractors. Enhance your favorite areas. SonarChartTM becomes more precise every day with sonar logs contributed by the Navionics Community from all major plotter/sounder brands and mobile devices. And with SonarCharTM Live, you can use your plotter/sounder to create real time personal HD bathymetry maps and upload sonar logs to Navionics. Keep your GPS charts up to date with around 2,000 edits per day. You willl have the latest Nautical Chart, Sonar ChartTM and Community Edits enriched with information from official sources, our own surveys and research, and contributions from fellow boaters. Additional features including Plotter Sync, Dock to dock Autorouting, SonarChart Live display on plotter and Advanced Map Options are available with select Raymarine models. Nautical Chart and SonarChartTM are preloaded and ready to use. Download Community Edits along with daily updates for one year.