Whenever you are out on the water sailing, the SailTies app will create a GPS real-time track of your every movement and display it on a map. You can see every tack, gybe, knock, and lift. The guys at SailTies did such an amazing job of creating a user-friendly app for GPS tracking that we decided to hook up with them and allow their data to directly feed right into the student NauticEd logbook.