Raymarine EV-100 p70 Wheel Pilot Pack Designed for smaller wheel steered sailboats with maximum vessel displacement: 16,000 lbs. Precision monitoring of heading, pitch, roll and yaw allowing the autopilot to evolve instantly as sea conditions and vessel dynamics change No calibration required; The autopilot automatically evolves and adapts to your vessels steering characteristics without any user adjustments Flexible installation options; Waterproof housing allows for installation above or below deck Wheel Pilot Pack Includes: EV1 - Sensor Core, ACU-100 Actuator Control Unit, p70 control head, wheel drive, evolution cable kit