Advanced Tiller Pilot for sailing vessels up to 10,000lbs(4,500kg). Invented by Autohelm in 1973, tiller pilots have consistently been the worlds most popular pilot ever since, setting the standard for performance, reliability and ease of use. Advanced features are standard. AutoTack lets you handle the sheets, while the pilot tacks the boat and AutoSeastate intelligently keeps the boat on course while conserving power. Whether used as a stand-alone pilot or with a SeaTalk/NMEA GPS, the clear backlit LCD and 6-button keypad make these pilots safe and easy to use.