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 The Raymarine EV-100 p70 Wheel Pilot Pack comprises a fully enclosed wheel-drive that fits most types of wheels and provides superb autopilot performance for small to medium sized sailboats. Quick and easy installation makes it the ideal autopilot for do-it-yourselfers. Specifically designed to complement Raymarine’s unique wheel-drive and tiller-drive applications, the ACU-100 provides a powerful and secure interface between steering systems and the revolutionary EV-1 course computer and 9-axis sensor. The EV-100 wheel pilot comprises a fully enclosed wheel-drive for simple installation and superb autopilot performance. The EV-1 is designed for Evolution mechanical and hydraulic autopilot systems.