ST1000 Plus Tiller Pilot. ST1000 Plus tiller autopilot for tiller steered sailing vessels up to 6,600 lbs (3,000 kg). *Note: Always take the fully laden displacement weight of the vessel into account; this is often 20% above the designed displacement.. Includes:. Instruction Manual. Plus Tiller Pilot 12V Socket. Tiller Pin (sold in packages of 5). Mounting Socket (sold in packages of 5)