Take command on every voyage with the Garmin Reactor 40 Autopilot Corepack for Yamaha Helm Master Without GHC. This steer-by-wire autopilot delivers precise course control, exceptional responsiveness, and efficient operation for both powerboats and sailboats. Designed as a complete corepack, it integrates seamlessly with Yamaha Helm Master systems lacking GHC, bringing advanced Garmin marine technology to your cockpit.

• Solid-state 9-axis AHRS enables flexible mounting and accurate heading reference, reducing heading error and course deviation while conserving power for a smoother ride.
• Exceptional responsiveness reacts to sea state so you stay on your intended course even as the hull pitches and rolls.
• Minimal commissioning and calibration process—get on the water faster with simple setup designed for quick, reliable operation.
• Versatile steering modes include heading hold, wind hold, tack/jibe, and step turns, plus preprogrammed trolling and search procedures for versatile control on both power and sail craft.
• Remote control via Garmin network—with a compatible chartplotter you can monitor and steer Reactor 40 from anywhere on the boat for safer, more convenient piloting.
• Auto Guidance (with BlueChart g2 Vision charts, sold separately) provides GPS-path steering for planning routes; note that Auto Guidance is for planning purposes and does not replace safe navigation.
• Durable, marine-ready design features a fully gasketed, high-impact enclosure and IPX7 waterproofing, built to withstand demanding conditions on deck.
• Designed to work with powerboats and sailboats, offering a scalable solution that grows with your Garmin network and chartplotter setup.

Compatibility and integration are straightforward: Reactor 40 is powered via the NMEA 2000 bus (9–16 VDC) and includes robust cabling for reliable, long-lasting performance on the water. For reference, related specifications include the CCU and GHC 20 components, with documented dimensions, temperature ranges and NMEA outputs to support easy installation and diagnostics.

Specifications overview

• Model: 010-00705-91 (Reactor 40 Autopilot Corepack for Yamaha Helm Master Without GHC)
• Corepack type: Steer-by-wire Corepack for Yamaha Helm Master (No GHC)
• AHRS: Solid-state 9-axis for flexible mounting and precise attitude reference
• Temperature range: 5°F to 131°F (-15°C to 55°C) for both CCU and control components
• Water protection: IPX7-rated enclosure for demanding marine use
• CCU cable length: 9.5 ft (3 m); NMEA 2000 power input 9–16 V
• NMEA outputs: NMEA 2000, with additional NMEA 0183 compatibility via compatible displays
• GHC 20 compatibility: Display/controller specs available for reference (not included with the “Without GHC” configuration); features include a 4.3 × 4.4 × 1.9 in form factor, 320 × 240 px resolution, 9–16 VDC power, operating range up to 70 °C, and a wide viewing angle
• Auto Guidance: Optional when used with Garmin networked chartplotters and BlueChart g2 Vision charts (sold separately); designed for route planning and autopilot interfacing rather than sole navigation authority