Even consumer level boats are starting to get this technology. You can get nav systems now which have fully autonomous control (I believe via garmin). They are

Even consumer level boats are starting to get this technology. You can get nav systems now which have fully autonomous control (I believe via garmin). They are extremely useful when fishing. You can set a waypoint and have the boat drive you there while you take care of your tackle, live well, etc. Then, once you arrive, the nav system will keep you in the same spot without having to drop anchor.