Description
The Reactor 40 Steer-by-Wire Autopilot Corepack, Without GHC is part of Garmin’s Reactor 40 marine autopilot system for steer-by-wire. Reactor 40 uses a solid-state attitude and heading reference system to maintain course while reducing the amount of manual steering required on longer runs.
Main Features
- Reactor 40 solid-state autopilot architecture
- Designed for the specified vessel steering system
- Garmin Shadow Drive and heading/control integration where supported
- NMEA 2000 connectivity for compatible Garmin chartplotters and instruments
- Commissioning and steering-system compatibility must be verified before installation
Course keeping
A properly installed and commissioned Reactor 40 can hold heading, follow navigation commands from compatible Garmin chartplotters and reduce steering workload. Autopilot performance depends on vessel setup, sea conditions and correct calibration.
Steering compatibility
This package is intended for steer-by-wire. Pump capacity, steering cylinder displacement, engine configuration and control interface are critical selection factors; do not select an autopilot corepack by display preference alone.
Garmin integration
NMEA 2000 allows compatible chartplotters and GHC control displays to exchange heading, navigation and autopilot data. Depending on the package, a GHC 50 or chartplotter may be used for control.
Installation and commissioning
Autopilot installation is a safety-critical job involving steering, electrical and sensor components. Follow Garmin’s installation instructions and perform dockside and sea-trial commissioning before relying on the system.
What’s in the Box
Package contents vary by Reactor 40 corepack. They may include CCU/AHRS, ECU, pump or steering actuator, Shadow Drive components, cables, NMEA 2000 hardware and documentation. Refer to the exact Garmin package list for this part number.
Specifications
- System: Garmin Reactor 40
- Application: steer-by-wire
- Network: NMEA 2000
- Control: Compatible Garmin chartplotter and/or GHC control head, package dependent
- Installation: Requires steering-system verification and commissioning
- Part number: 010-00705-90

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