Overview

The Garmin 010-12117-20 is a masthead wind transducer that reports wind speed and wind angle into a NMEA 2000 network through a Garmin GND 10 interface.

It uses a twin-fin vane and a 3-bladed propeller with optical sensing to keep wind readings steady, especially in lighter air. Wind speed range is 0.8 to 90 knots, and the unit is rated IPX6 with an overall mounted size of 345 mm (H) x 610 mm (L).

This is the transducer-only configuration for replacing an existing gWind sensor when your cabling and network hardware are already in place.

Key features

• Twin-fin and 3-bladed propeller layout for stable wind angle readings and better response in light air.
• Optical sensing for consistent wind speed measurement across a 0.8 to 90 knot range.
• Connects through a Garmin GND 10 to share wind data on a NMEA 2000 backbone.
• IPX6 water resistance rating for masthead exposure and heavy-sea spray.
• Low electrical load (0.33 W typical, 28 mA at 12 VDC) with a lightweight 260 g sensor.

What's included

• gWind transducer
• Propeller installation instructions

Compatibility and fit

The transducer connects to a Garmin GND 10, which then shares wind speed and wind angle data on your NMEA 2000 network for compatible instruments and displays. For a full installation you will need the appropriate mast cable run, a powered NMEA 2000 backbone, and correct network termination.

If you are upgrading from a Nexus wind sensor, the mast cable connection at the Nexus server is handled differently than a traditional wind port connection, so plan on re-terminating the cable per your server layout.

Installation and setup

Mount the sensor on a horizontal surface at the masthead and align it to the bow, parallel with the boat centerline. If the masthead cap is not level, add a shim so the unit sits flat.

Once connected through the GND 10, wind-angle offset can be set from your NMEA 2000 device settings if the sensor cannot be pointed exactly forward. Wind speed and wind angle filtering can also be adjusted to match how quickly you want the display to react.

Maintenance and care

Clean with mild soap and rinse with fresh water as needed. Avoid detergents and high-pressure spray, and remove and store the transducer in a dry location when the boat will sit unused for long periods.

Use on board

This sensor is a good match for sailboats running a Garmin instrument network where wind data is displayed at the helm and logged for sailing performance. It also makes sense as a masthead replacement after salt exposure, UV aging, or an impact has taken a sensor out of service.