C-MAP REVEAL Lakes charts bring powerful C-MAP features to freshwater anglers including inland Shaded Relief, 1-foot contours on 15,000+ US lakes and 9.400+ lakes in Canada, Custom Depth Shading, Satellite Overlay and more. Full-Featured Vector Charts. High-Res Bathymetry. Dynamic Raster Charts. Subscription-Free Easy Routing. Online Updates – 12 months’ free updates. Compatible with Lowrance, Simrad and B&G Chartplotters.