MARINE NAVIGATION Find your road on the sea! GPS chartplotter for boating. An easy-to-use offline GPS tracker and route planner featuring worldwide offline maps. Navigate with your favorite device around the world, turn your smartphone or tablet into a GPS navigator with an offline map, ideal for sea, rivers and lakes, for boaters, fishermen and water sports. This application is dedicated to the sea and the people who love it and live it with passion. WHAT MAKES IT A BEST GPS TRACKER OR NAVI