The wireless boom angle sensor

SailSensor BoomAngle measures the boom angle in real time, completely wirelessly, and transmits the value to the SailSensor app while you sail. It is the data that describes the mainsail opening moment by moment, making trim readable and repeatable.

€590 VAT included

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SailSensor BoomAngle wireless boom angle sensor on board

«Knowing the boom is at 14 degrees is information; knowing that at those 14 degrees, in that wind and that heel, the boat is performing better or worse than usual is practical knowledge.»

— attributed to Fare Vela

On its own, the boom angle is just a number. Cross-referenced with the wind, the heel and the boat's performance, that number becomes useful, repeatable knowledge: it tells you not only where the boom is, but whether that setting is really making the boat go better than usual.

That is why SailSensor BoomAngle was designed as a module within a system: providing the boom angle accurately is the first step, but the real value emerges when that data is read together with the rest. Discover SailSensor technology and patents ›

How it works

A wireless sensor fitted to the boom detects its angle and transmits it in real time to the SailSensor app. No cabling to run along the deck: the data reaches the smartphone directly and adds to the readings from the other modules in the system.

Angle in real time

Reads the boom angle moment by moment and transmits it wirelessly to the app, so you can follow the mainsail opening as you sail.

Integrates with Pressure

Together with SailSensor Pressure, the boom angle is cross-referenced with the sail's aerodynamic load for a complete trim picture.

Ready for NMEA 2000

With SailSensor Bridge the boom angle data can be brought onto the boat's NMEA 2000 network.

From the sensor to the app

The boom angle data flows into the SailSensor app for Android (iOS version in development), where it is displayed in real time alongside the navigation telemetry. Sessions can be stored to review your outings and compare settings over time.

With SailSensor Bridge the same data can be brought onto the boat's NMEA 2000 network.

A patented system

The BoomAngle system is the subject of a patent application filed with the UIBM (the Italian Patent and Trademark Office), no. 102026000006115. Learn more about SailSensor technology and patents ›

Frequently asked questions

What does SailSensor BoomAngle measure?

It measures the boom angle in real time and transmits the data wirelessly to the SailSensor app, so you can read the mainsail opening moment by moment while sailing.

How does it connect and which app does it work with?

The sensor is wireless and transmits the data via BLE to the SailSensor app for Android (the iOS version is in development). It integrates with SailSensor Pressure and, through SailSensor Bridge, the data can be brought onto the boat's NMEA 2000 network.

Is SailSensor BoomAngle an anti-theft device or a tracker for the boat?

No. It is not a security, tracking or anti-theft system: it is a racing instrument that measures the boom angle to make trim objective and repeatable. See the disambiguation FAQ.

The other modules in the ecosystem

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