Description: Raymarine SmartPilot S1000 suits powerboats up to 25' (8m) equipped with SeaStar hydraulics. Engineered to achieve the greatest accuracy without a rudder reference, the S1000 has a standard steer to heading mode which puts you on the most direct course while reducing the amount of fuel consumed. Raymarine's proprietary SmartSteer technology intelligently calculates the rate of turn relative to the boat speed. With minimal wiring and no complicated compass or rudder reference to install, you can have your autopilot running in record time!!