Multi-dimensional marine charts including the comprehensive Nautical Chart, incredible fishing detail with the SonarChart™ HD bathymetry map, and Community Edits. Plus exclusive Platinum features: 3D View, high-resolution photo/chart overlay, port photos, and georeferenced coast pilots. Register online for free daily updates for one year. Saltwater and the Great Lakes: One foot contours inshore and nearshore; 3' and 6' contours offshore beyond 90'Daily updatesHuge regions - the most detail
