Navionics Platinum+ Canada, West & Alaska -Lakes, Rivers and Coastal Marine Chart. Platinum+ additional features include: High resolution relief shading and satellite imagery, sonar imagery, aerial photography and 3D view.Includes a one-year subscription to Daily Updates and advanced features. After a year, renew at a discounted price.Visit Navionics website for full feature list, coverage details and compatibility of Navionics+ content and features with your GPS chartplotter.**NOT COMPATIBLE with GARMIN GPS chartplotters*