I have used this program as the primary navigation program for almost 4000 miles of cruising. I have found the features very useable including setting up a course with preset waypoints and following to destination. The ability to quickly determine distance and bearing to various points along the route is excellent. Finally, the dashboard showing distance, SOG, COG, and how far your COG is off the projected course is very helpful. I have had use of a chart plotter on the boats for all trips but this program is much easier to use. Boatload
Off road hike about iNavX: Marine Navigation, v5.0.3