Raymarine ACU-300 Actuator Control Unit

The Raymarine ACU-300 Actuator Control Unit is a precision marine autopilot component engineered for vessels requiring robust, reliable helm control in demanding maritime environments. Built for professional operators and serious recreational boaters, this control unit manages actuator systems that automatically steer vessels based on navigational inputs, eliminating manual helm fatigue on extended passages. The ACU-300 serves as the brain of modern marine autopilot installations, integrating with Raymarine's navigation suite to deliver hands-free directional command across a wide range of sea states and heading references.

This control unit operates as a closed-loop feedback system, continuously reading vessel heading from gyrocompass or GPS inputs and commanding hydraulic or electric actuators to maintain course within tight tolerances. The ACU-300 processes navigational data and environmental inputs to execute smooth, economical steering corrections that reduce fuel consumption and wear on mechanical systems compared to manual helmsmanship. Its integration with Raymarine's multifunction displays allows operators to program waypoint sequences, set wind-relative or current-compensated headings, and monitor system performance in real time. The unit's sealed architecture and marine-grade construction ensure dependable operation in salt-spray, high-vibration, and temperature-variable deck environments typical of commercial and offshore applications.

The Raymarine ACU-300 is essential for professional fishing vessels, superyachts, naval auxiliaries, and long-range cruising sailboats where fatigue reduction and course stability directly impact mission effectiveness and crew safety. Installation requires integration with compatible Raymarine autopilot sensors, actuators, and display networks; consult system documentation or a certified marine electronics technician to ensure proper configuration for your vessel class and propulsion type. Weighing 5 lbs, the compact control unit mounts in weatherproof enclosures aboard, away from direct saltwater exposure, while maintaining short signal runs to remote helm stations and deck-mounted actuators.