Upgrade your boat's speed monitoring with the Raymarine A26044 long stem bronze thru-hull transducer, designed for precision in demanding marine environments. This robust sensor delivers reliable speed data through choppy waters and varying conditions, helping skippers navigate confidently whether racing offshore or cruising coastal waters. Its extended stem reaches deep into thicker hulls, ensuring accurate readings without compromise.

Key Features That Stand Out

• Extended Stem Design: Perfect for cored or extra-thick hulls (wood or fiberglass), it penetrates fully for optimal water flow and speed accuracy, reducing errors from air bubbles or poor positioning.
• Bronze Construction: Corrosion-resistant material thrives in saltwater, promising years of dependable service without the pitting or degradation common in lesser alloys.
• Self-Sealing Paddlewheel Insert: Easily removable for cleaning or replacement without hauling the boat—pop it out, service it on deck, and snap it back in to minimize downtime.
• 200 kHz Frequency: Optimized for clear, interference-free speed measurements, ideal for sailboats and powerboats needing quick response times over short pulses.
• Generous 45-Foot Cable: Provides flexible routing from hull to helm, accommodating larger vessels or complex installations.

Seamless Compatibility with Raymarine Instruments

Engineered to integrate smoothly with popular Raymarine displays:

• ST70 series (requires dedicated Speed and Depth Pods for full functionality)
• ST60+ instruments
• ST290 systems

This plug-and-play setup means you spend less time wiring and more time on the water, with data flowing directly to your multifunction display for real-time speed, log, and trip calculations.

Installation Insights for Boaters

Installing this thru-hull sensor calls for a clean 2-inch hole—standard sizing that matches most templates. Position it forward of the prop and keel, ideally at the hull's flattest V-section for undisturbed water flow. The long stem shines here, accommodating up to deeper deadrise angles without fouling. Pro tip: Pair it with a fairing block (sold separately) to align the sensor dead flat against the hull, boosting accuracy by up to 20% in rough seas. Dry-fit everything first, seal with marine-grade polysulfide, and bed it securely to prevent leaks.

Why Boaters Trust This Transducer

Beyond specs, this unit excels in real-world reliability. Paddlewheel technology offers superior low-speed precision compared to GPS-derived speeds, crucial for precise maneuvering in marinas or during sail trim adjustments. It's a favorite among performance sailors for its responsiveness and among fishermen for consistent trolling speeds. Regular freshwater rinses keep the wheel spinning freely, and that self-sealing feature saves headaches during seasonal maintenance.

Maintenance Made Simple

Keep it performing like new with these quick habits:

• Rinse the paddlewheel after every outing to flush salt and growth.
• Inspect the insert seasonally; spin it by hand to check for binding.
• Use non-abrasive cleaners—no harsh chemicals that could etch the bronze.
• Monitor readings against GPS; calibrate if logs drift over long trips.

With proper care, expect a decade of spot-on data, outlasting plastic alternatives in harsh conditions.

Frequently Asked Questions

Equip your vessel with this proven performer and feel the difference in data-driven decisions on every outing.