ST1000 Plus Tiller PilotST1000 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 ManualPlus Tiller Pilot 12V SocketTiller PinMounting Socket Specifications:Steering Type: TillerBox Dimensions: 5″H x 7″W x 21″L WT: 5 lbsUPC: 023193100098Quick Guide (pdf)