Navionics Platinum+ NPUS004R Canada & Alaska
.It features Nautical Charts that are derived from multiple private, government, and official sources, presented in a familiar look and feel. With SonarChart™ 1’ (0.5 meters) HD bathymetry maps, you also get a few advanced features like Dock-to-Dock Route Guidance Technology that suggests you the path to follow through marina entrances, channels, inlets, and more, Plotter Sync that enables wireless access to up to 5,000 daily updates, Live Mapping with access to the freshest available chart data every time, and Advanced Map Options that allows customization of your view so that you can prioritize the details that matter the most.