Maptech Waterproof Compact ChartKits for today’s smaller boats. At half the size of the original ChartKit, each title covers approximately one-third the area of a full-size version. These titles are printed on tough, tear-resistant plastic pages that are also totally waterproof. All coastal U.S. titles include FREE Digital Companion Charts for the region which may be downloaded to your PC. Compact 12”x 17” size; Waterproof, tear-resistant pages; Pre-plotted courses and GPS waypoints for quick reference; Free digital charts and software for your PC for home planning and onboard navigation.