【Tutorial: Using Helm Function】 A quick demonstration via your compatible smartphone or tablet on how to utilize the Helm function on the ActiveCaptain app to control your chartplotter. Mastering the maritime routes starts with your smartphone or tablet! Garmin's free comprehensive app connects your mobile device with chartplotters, marine charts, maps, and communities, keeping you closely linked no matter where you are. Try the OneChart feature now and have navigation at your fingertips anytime