Garmin Canada Lake Vu Ultra HD chart G3Coverage on over 13,500 total lakes, of which 4,800 are HD maps with up to 1' contours to provide a clearer view of the lake bottom to catch more fish and navigate with confidence. Auto Guidance feature shows the best route to a destination High resolution Relief Shading makes it easier to see contours and find fish holding structure Displays detailed shorelines and coastlines as well as underwater features like riverbeds, fish attractors and