C-MAP REVEAL:TWEED HEADS TO WEIPA High-definition C-MAP Reveal layer on selected areas. Reduces search time with immediate high-definition display of bottom structure, wrecks, isolated reefs and ledges. C-MAP Reveal charts contain full C-MAP MAX-N+ vector navigation data, including new features like High Resolution Bathy, Custom Depth Shading, Genesis layer and satellite imagery. Easy to use – just turn on Shaded Relief setting in chartplotter