This application is designed to help sailing clubs, Race Offices and support vessels, lay yacht racing courses. The Race Officer sets a course from the start boat and shares this course with their support boats. The support boats can see the course on a map, get course updates in real-time and all support boats can been seen on a map. Any boats laying marks can zoom in on the map and see exactly where to lay their marks, or tap on a mark for realtime compass direction and distance.