Garmin adds high-resolution relief shading to its premium BlueChart g3 Vision and LakeVü g3 Ultra cartography - Panbo
Garmin Marine - Upgrade your maps to BlueChart g3 Vision and get amazing new features like high-resolution relief shading. Just purchase a new accessory card or download. Learn more here: http://ms.spr.ly/6180TyhEq
Garmin Charts - BlueChart g3 Vision HD Digital Charts– Page 17 – American Nautical Services