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Raymarine

R28171

Long masthead alone

Designed as a spare part, the Raymarine R28171 long masthead unit is a critical mechanical component for existing Raymarine wind sensors. Its "long" design allows for optimal measurement by reducing masthead interference. It is intended for repair and maintenance of Raymarine wind transducer/vane anemometer systems, particularly for ST290 series transducers. No information on included accessories is specified.

Retail priceBenefit from the professional rate

$593.94 USD

$593.94 USD ~~$654.19 USD~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

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Installers near you

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Support service

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Technical specifications

Wired network	N/A (mechanical part)
Compatible systems	Raymarine ST290, Raymarine wind measurement systems compatible
Anemometer type	With cups and vane
Cup assembly material	UV-stabilized plastic
Housing material	UV-stabilized plastic
Product height	803.5
Operating voltage	N/A (mechanical part)
Max power consumption	N/A (mechanical part)
Cable length	N/A (spare part, no cable supplied)
Wind vane / anemometer compatibility	Raymarine ST290
Product width	345.5
Product depth	68
Warranty period	2 years
Vertical shaft length	0.6
Typical power consumption	N/A (mechanical part)
NMEA 2000 Load Equivalency Number (LEN)	N/A (mechanical part)
Operating temperature	-15°C to +55°C
Recommended fuse rating	N/A (mechanical part)
IP rating	IPX6
Compass safe distance	N/A (mechanical part)
Mounting type	Masthead
Certifications	CE, IEC 60945

Detailed description

The Raymarine R28171 long masthead is a mechanical replacement component designed for wind measurement systems. It provides the functions of a vane anemometer, capturing apparent wind direction and speed. Its "long" design is specifically adapted to optimize measurement at height, reducing potential interference from mast-mounted equipment or structures.

Essential Component for Wind Measurement

This masthead is a critical spare part for maintaining Raymarine wind sensors, particularly those associated with older systems such as the ST290, which require modular components. Unlike newer integrated units (e.g., Raymarine i60 or i70s wind sensors, which are complete assemblies), the R28171 is intended for users wishing to replace only the upper mechanical section of their wind sensor without replacing the entire electronic transducer. It restores system functionality without the cost of a full replacement.

Optimizing Apparent Wind Accuracy

The advantage of a long masthead lies in its ability to position sensors (vane and anemometer cups) further from turbulence generated by the mast itself or other equipment installed at the masthead (VHF antennas, navigation lights). This elevation contributes to more accurate and stable apparent wind readings, essential for sailboat navigation and performance optimization. The R28171 is therefore a technical choice for sailors seeking to maintain or improve the fidelity of wind data in their Raymarine installation.

Documentation

Type	Nom
	EN - Technical Drawing - Long Masthead Alone

Expert opinion

Pol CONIN

Digital Manager

« Raymarine R28171 long masthead unit: a critical spare part for wind measurement »

The Raymarine R28171 long masthead fitting is not a complete wind measurement system, but a critical mechanical spare part. Its value lies in its ability to keep existing Raymarine wind transducer systems operational—potentially for models like the ST290—without requiring a costly full electronics replacement. The "long" aspect is a significant technical advantage, particularly for performance sailboats or mid-sized to large units. It allows the wind transducer and vane anemometer sensors to be raised above turbulent zones created by the mast, antennas, or navigation lights.

Installing this masthead fitting requires working at height, often on the mast itself, which involves specific safety precautions and potentially professional intervention. While the electrical connection to the existing transducer is typically straightforward, the mechanical mounting demands precision to ensure correct orientation and durable fastening. This component is best suited for targeted repairs rather than new installations, where complete integrated solutions (e.g., NMEA 2000 masthead units) may be preferable.

It is important to note that this part is a passive mechanical component and does not replace the electronic transducer that converts movements into digital signals. It is chosen to replace a damaged element (broken vane, missing cups) on a compatible Raymarine installation, rather than to enhance the wind measurement system's intrinsic electronic functionality.

Durabilité

Facilité d'installation

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Long masthead alone

$593.94 USD

$593.94 USD ~~$654.19 USD~~

Frequently Asked Questions

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What is the Raymarine R28171 long mast head unit used for?

The Raymarine R28171 long mast head unit is a critical mechanical spare component for wind measurement systems. It provides the wind transducer and vane anemometer functions, accurately capturing apparent wind direction and speed.

What is the advantage of the "long" design of this masthead?

The "long" design of this masthead is specifically adapted to optimize height measurement. It allows positioning the sensors (wind transducer and anemometer cups) farther from the turbulence generated by the mast itself or by other equipment installed at the masthead (such as VHF antennas or navigation lights). This elevation contributes to more accurate and stable apparent wind readings.

Is the R28171 masthead unit a complete wind sensor?

No, the Raymarine R28171 long masthead unit is a mechanical spare part. It is designed to specifically replace the upper section (vane and anemometer) of an existing wind sensor, without including the full electronic transducer or the connection cable.

Which Raymarine systems is this masthead unit compatible with?

This masthead unit is primarily designed for servicing wind sensors associated with older Raymarine systems, particularly those requiring modular components such as the ST290 system. It restores functionality to an existing system by replacing the upper mechanical section.

Is this masthead compatible with Raymarine i60 or i70s wind sensors?

No, the long masthead R28171 is not compatible with newer integrated wind sensors such as Raymarine i60 or i70s. These systems are complete units and are not designed to use modular components like the R28171.

Which wind data does this masthead sensor measure?

Once correctly installed and connected to a compatible Raymarine system, this masthead sensor measures apparent wind direction and speed. This data is essential for sailboat navigation and performance optimization.

Is the installation of the R28171 masthead unit difficult?

The R28171 long masthead unit is a mechanical spare part. Its installation typically involves replacing the old masthead unit on the existing transducer. It is recommended to follow the specific instructions provided in your Raymarine system installation manual to ensure correct and secure installation.

What is included in the R28171 product packaging?

The R28171 product corresponds to the "tall masthead alone". The packaging contains only the upper mechanical part of the wind sensor, i.e., the wind vane and the cups of the anemometer. The electronic transducer, connection cable, or other accessories are not included.