Type 1 Linear Drive – 12V. Linear drive for mechancically steered vessels up to 22,000lb (10,000kg),Designed for boats with existing mechanical steering systems. The mechanical linear drive provides powerful thrust, fast hardover times and quiet operation. Features: Low backdrive force, to minimize the drives effect on the boats steering when the autopilot is in standby, A powerful electric motor controlled by an electromagnetic fail-safe clutch, using a high tensile belt drive and epicyclic gearbox, High performance for minimum current consumption.