Overview

The Garmin 010-12117-30 is a masthead wind transducer that measures wind speed and wind angle and feeds that data to a NMEA 2000 network when connected through a Garmin GND 10. It uses a 3.3 ft (1 meter) straight pole to raise the sensor above the masthead, helping reduce turbulence effects at the rig.

The twin-fin layout keeps the sensor stable as the boat moves, and the 3-bladed propeller is built for responsive wind-speed pickup in lighter air. This is the masthead transducer assembly only, meant for replacement or refits where the rest of the system is already in place.

Key features

• 3.3 ft (1 meter) straight pole lifts the sensor above the masthead to help reduce wind shadow and turbulence.
• Twin-fin sensor body for steadier wind-angle behavior as the rig pitches and rolls.
• 3-bladed propeller format for responsive wind-speed readings, especially in lighter air.
• Wind data is carried to the boat network through a Garmin GND 10, then shared on NMEA 2000.
• Supports orientation correction through a wind-angle offset setting if the sensor cannot be aligned perfectly with the bow.

Compatibility and fit

This transducer is intended for masthead mounting on sailing rigs and interfaces through a Garmin GND 10 to place wind speed and wind angle onto an onboard NMEA 2000 backbone. Plan for a mast cable run from the masthead down to the GND 10 location, and confirm you have the network hardware needed for your existing instruments or chartplotter to see the wind data.

Installation and setup

Mount the sensor so the cable exit faces the front of the boat and stays parallel to the centerline. If the masthead geometry forces an offset, you can correct the displayed wind angle using the wind-angle offset setting on a connected marine instrument.

On racing and performance cruising boats, a clean masthead install matters as much as the sensor itself. Take the time to secure the pole and cable against vibration, keep chafe points protected, and leave service slack so the unit can be removed during rig work.

Maintenance and care

The propeller and sensor body live in a high-UV, high-salt location. Rinse with fresh water after heavy salt spray and check the propeller for free rotation during routine rig inspections. If the boat will sit unused for an extended period, removing the transducer and storing it in a dry place helps reduce wear from weather exposure.

What’s included

• gWind Race transducer
• Propeller installation instructions