The ST2000 Plus from Raymarine is a tiller autopilot for tiller steered sailing vessels to 10,000 lbs (4,500 kg)*Note: Always take the fully laden displacement weight of the vessel into account; this is often 20% above the designed displacement. Raymarine ST2000 Plus Tiller Pilot Includes: Instruction ManualPlus Tiller Pilot 12V SocketTiller PinMounting Socket