Precision Speed Measurement for Competitive Sailing

Navigating the fine line between speed and control demands reliable data from your instruments. The B&G H3000 Plastic Flush Speed Sensor delivers accurate through-hull speed readings and sea temperature insights, tailored for racing sailors and performance cruisers who refuse to compromise on hull speed precision. Mounted flush to minimize drag, this sensor integrates seamlessly into high-end H3000 systems, providing real-time log and temperature data that sharpens your tactical edge on the water.

How It Enhances Your On-Water Performance

• Drag-Free Flush Design: The low-profile plastic housing sits perfectly flush with the hull, reducing turbulence and preserving your boat's hydrodynamic efficiency—crucial during high-speed reaches or tight spinnaker runs.
• Dual Functionality: Combines paddlewheel speed detection with an integrated thermistor for sea temperature, eliminating the need for multiple transducers and simplifying your setup.
• Hassle-Free Maintenance: A self-closing valve allows quick sensor paddlewheel removal for cleaning without hauling the boat, keeping biofouling at bay in warm waters or algae-prone areas.

Whether you're optimizing VMG in a fleet race or fine-tuning autopilot performance on long passages, this sensor's responsive 3-blade paddlewheel captures speed from 0.2 knots up to 45 knots with minimal error, even in choppy conditions.

Built for Demanding Marine Environments

Crafted from robust, corrosion-resistant plastic, the sensor withstands the rigors of saltwater exposure while maintaining its compact footprint—total length around 138mm with an 88mm housing diameter. This makes it ideal for yachts with limited thru-hull space or those prioritizing a clean deck aesthetic.

Installation Insights from Sailing Pros

Position the sensor forward of the propeller and keel, ideally at the turn of the bilge, for optimal water flow. Use a 75mm (3-inch) hole saw for a precise fit. During install, align the paddlewheel vertically to ensure accurate forward/reverse differentiation, a feature that proves invaluable in maneuvers or current-heavy venues like the Solent or Chesapeake Bay.

Seamless Integration with H3000 Ecosystem

As a core component of the H3000 family, this sensor feeds fast, calibrated data directly into your central processor. It supports advanced functions like tide-independent speed-over-ground calculations when linked with GPS, helping you dial in perfect sail trim without guesswork. Sailors report up to 5% gains in upwind performance from the clean, responsive inputs it provides to wind instruments and autopilots.

Durability Meets Innovation

Unlike metal housings that can corrode or bronze options that add weight, the plastic construction offers lightweight reliability without sacrificing strength. It's engineered to handle repeated log calibrations via your H3000 display, adapting to hull speed changes from load shifts or fouling for year-round trustworthiness.

Frequently Asked Questions