Garmin B744VL Thru Hull Triducer Long Stem 50/200kHz High Speed fairing Block w/6-Pin

Upgrade your vessel's underwater awareness with this robust thru-hull triducer designed for serious mariners who demand precision at any speed. Engineered for seamless integration into fiberglass or wooden hulls, it delivers crystal-clear depth readings, accurate water temperature, and reliable speed logs—essential data for safe navigation, fishing, or racing.

Superior Dual-Frequency Performance

Operating across 50 kHz and 200 kHz, this transducer strikes the perfect balance for varied water conditions. The wider 45-degree beam at 50 kHz excels in shallow waters and open ocean scans, capturing broad coverage for structure detection or bottom contouring. Switch to the sharper 12-degree beam at 200 kHz for pinpoint detail in deeper zones or when targeting fish arches with exceptional clarity. Mariners report consistent performance from coastal cruising to offshore adventures, minimizing signal loss even in choppy seas.

High-Speed Design with Fairing Block

The long stem configuration pairs brilliantly with the included high-speed fairing block, optimizing water flow over the transducer face. This setup minimizes turbulence and drag, ensuring accurate speed data up to planing speeds without cavitation interference. Ideal for sailboats, power yachts, or performance catamarans where hull speed matters, it maintains data integrity when you're pushing the throttle. Bronze construction withstands corrosive saltwater environments, promising years of dependable service with proper care.

Triducer Triple Threat: Depth, Speed, and Temperature

• Depth Sounding: Reliable bottom tracking from 1.5 meters to over 700 meters, adaptable to your chartplotter's needs.
• Speed Sensing: Paddlewheel log calibrated for true vessel speed through water, crucial for fuel efficiency calculations or logbook accuracy.
• Temperature Probe: Fast-response sensor for monitoring thermoclines, vital for sportfishing or understanding current flows.

Its 6-pin connector simplifies wiring into compatible marine electronics, streamlining your setup without excess cabling hassles.

Real-World Reliability for Boaters

Skippers praise its stability in rough conditions—think beam seas or following swells—where lesser units falter. The thru-hull mount positions the sensor optimally below the waterline, free from prop wash or hull strakes. For racing crews, the fairing block's hydrodynamic shape shaves drag, contributing to that competitive edge. Casual anglers appreciate how the dual frequencies reveal bait schools and wrecks with ease, turning routine outings into productive hauls.

Installation Insights from Seasoned Installers

Positioning is key: Aim for a flat hull section forward of any keel or strakes, at least 1/3 of the waterline length from the bow. The long stem accommodates thicker hulls up to 69mm deadrise, reducing air entrainment risks. Use marine sealant for a watertight bond, and fair the block to match your hull's contour for peak performance. Test in calm water post-install to verify readings before your next voyage.

Long-Term Durability and Maintenance

Bronze housing resists marine growth better than plastic alternatives, but routine antifouling paint application extends life. Flush the speed paddlewheel seasonally to prevent fouling, and inspect wiring for chafe during haul-outs. With these habits, it outlasts demanding seasons on trawlers or sportfishers.