Our Most Responsive Autopilot System on the Water
Solid-state 9-axis Attitude Heading Reference System (AHRS)
Minimizes heading error, course deviation, rudder movement and power
consumption while providing a comfortable ride
Minimal commissioning and calibration
Reactor 40 for steer-by-wire provides robust autopilot capabilities for
SeaStar Optimus systems, Yanmar Marine ZT 370 stern drive electronic power
steering systems and ZF 2800 Pod drives.
With a complete package designed for powerboats and sailboats, Garmin brings
an advanced marine technology to the boating public that was once only
available for commercial boats. The Reactor 40 autopilot series is simply the
most responsive autopilot system we have ever offered.
Reactor 40 autopilots are very versatile. Both powerboat and sailing features
are available in all corepacks, including heading hold, wind hold, tack/jibe,
step turns and more; simply pick the autopilot that’s compatible with your
existing steering system.
Solid-state 9-axis AHRS
With its advanced solid-state 9-axis AHRS, you can mount Reactor 40 nearly
anywhere, in any orientation. In addition, this new system greatly minimizes
heading error, course deviation, rudder movement and power consumption while
providing a comfortable ride for all on board.
Reacts to Sea Conditions
This amazing autopilot actually reacts to the sea to hold your course. Even
when the boat is pitching and rolling, you can remain confident that the
Reactor 40 autopilot will keep you on your desired course.
Minimal Commissioning and Calibration
All autopilots require commissioning and calibration — all of them. We know
you just want to get on the water, so we made this process as fast and easy as
possible. That’s the power of simple.
Full Integration with Garmin Chartplotters
Combined with our compatible networked chartplotter, you can have full control
of Reactor 40 from wherever you are on the boat. In addition to holding its
course in virtually all weather and wind conditions, the system can smoothly
perform a variety of preprogrammed trolling and search procedures. Plus, with
a compatible Garmin networked chartplotter and BlueChart® g2 Vision® charts
(sold separately), you gain optional features such as Auto Guidance¹, which
automatically steers GPS paths.
Connect to Networked Devices
The Reactor 40 autopilot is operated using up to 3 GHC™ helm control units.
GHC communicates with the autopilot system via your NMEA 2000® network, so
autopilot heading data can be shared easily with other devices. This enables
MARPA and chart overlay when connected to a Garmin chartplotter. An optional
handheld wireless remote control is also available; however, for the highest
level of convenience, control GHC using a compatible quatix® 3 or
5 marine multisport smartwatch.
¹Auto Guidance is for planning purposes only and does not replace safe
Dimensions: 3 19/32 in. diameter (91.4 mm)
Weight: 5.6 oz. (159 g)
Temperature range: From 5°F to 131°F (from -15°C to 55°C)
Case material: Fully gasketed, high-impact plastic, waterproof to IEC 529 IPX7
CCU cable length: 9.5 ft. (3 m)
NMEA 2000 power input: 9-16V
NMEA 2000 LEN: 3 (150 mA)
Dimensions (L × Diameter): 29/32 in. × 1 in. (23 mm × 25 mm)
Weight: 2.4 oz. (68 g)
Temperature range: from 5°F to 131°F (from -15°C to 55°C)
Cable length: 10 ft. (3.0 m)
GHC™ 20 Marine Autopilot Control Unit
Take Control of Your Autopilot
Compatible with legacy Garmin autopilots as well as newer
Garmin autopilots; can be controlled with quatix® marine watch
Large, bright 4-inch color glass-bonded display with anti-glare
Easy to read from a distance and 170 degree viewing angle
Enhanced night time readability with backlight dimmer and full
color or new red/black or green/black color schemes
Enhanced daylight readability with new high-contrast color
The GHC 20 autopilot helm controller is compatible with newer Garmin
autopilots as well as legacy models on both power and sail vessels.
It's large, bright 4-inch color display is easy to read at a distance and 170
degree viewing angle. Glass-bonded anti-glare lens prevents fogging and
increases contrast. Daylight readability is enhanced with a high-contrast
color scheme. For enhanced night visibility, you have a choice of red/black,
green/black or the normal night mode color scheme along with a dimmer control.
An optional handheld wireless remote control is available; however, for the
highest level of convenience, control the GHC 20 using quatix, the world’s
first marine GPS navigation watch featuring ANT® wireless technology. Power is
supplied by the NMEA 2000® network. Included are 2 trim snap piece cover
options which allow you to match the GHC 20 with the new GPSMAP® 500/700
series, GPSMAP 8000 Glass Helm series or legacy Garmin chartplotters.
Unit dimensions, WxHxD: 4.3 " x 4.4 " x 1.9 " (10.9 x 11.2 x 4.8 cm)
Display resolution, WxH: 320 x 240 pixels
Display type: QVGA color LCD display
NMEA output: NMEA 0183, NMEA 2000®
Supply voltage: Powered by NMEA 2000 bus, 9-16 VDC, units operate up to 32 VDC
Operating temperature: -15° C to 70 C° (5° F to 158° F)
Max power consumption: 3W
Viewing angle: 170°
Brightness: 1200 cd/m2 (NIT)
Water rating: IPX7
NMEA 2000 LEN (Load Equivalency Number): 7 (350 mA at 9VDC)
In the box
Reactor 40 CCU (Course Computer Unit)
GHC™ 20 helm control display
NMEA 2000® drop cables (2 meters)
NMEA 2000 power cable
NMEA 2000 T-connectors
Male and female terminators
Installation Instructions (PDF)