Lowrance B744V Thru-Hull Triducer 9-Pin 50/200kHz

Upgrade your vessel's sonar capabilities with the robust Lowrance B744V thru-hull triducer, a go-to choice for serious anglers and boaters chasing reliable underwater intelligence. Crafted from durable bronze, this transducer punches through hulls seamlessly, delivering crystal-clear imaging whether you're trolling offshore or navigating coastal waters. Its dual-frequency setup at 50kHz and 200kHz strikes the perfect balance—wide coverage for deep-water hunts and sharp detail for spotting structure in shallower zones.

Key Features That Set It Apart

• Bronze Construction for Harsh Environments: Built to withstand saltwater corrosion and constant submersion, ensuring years of trouble-free performance on your boat.
• Triducer Design: Combines depth sounding, speed sensing, and water temperature readings into one efficient unit, simplifying your setup and reducing wiring clutter.
• Hi-Speed Fairing Block: Streamlines water flow over the transducer face, minimizing turbulence at high speeds up to 30+ knots—ideal for planing hulls and fast cruisers.
• NMEA 2000 Integration: Outputs speed and temp data directly to your network, letting compatible chartplotters display real-time info without extra sensors.
• 9-Pin Xsonic Connector with 33-Foot Cable: Plug-and-play compatibility with Lowrance units, offering ample length for flexible routing through bulkheads and consoles.

Performance in Real-World Boating Scenarios

Imagine cruising at displacement speeds in search of wrecks; the 50kHz cone spreads wide, painting a broad picture of the bottom up to 3,000 feet in ideal conditions. Switch to 200kHz for pinpoint accuracy on bait schools or ledges in 300 feet or less—the switch happens automatically on many Lowrance displays. Boaters rave about its sensitivity to subtle bottom changes, like gravel beds versus mud flats, which can make or break a fishing trip.

The included fairing block isn't just an add-on; it's engineered to align the transducer at the optimal 12-18 degree down-angle, boosting signal strength and reducing air entrainment that plagues poorly mounted units. For trailered boats, its low-profile design resists damage during launch and retrieval, while the bronze flange provides a secure, leak-proof seal against the hull.

Installation Insights from Seasoned Installers

Mounting a thru-hull like the B744V rewards preparation. Select a spot forward of the prop and strakes, at least 1/3 of the hull length from the bow, for undisturbed water flow. Use marine sealant generously around the thru-hull fitting, and bed the fairing block with adhesive to prevent vibration. Pro tip: Dry-fit everything on deck first to confirm cable routing—those 33 feet give you wiggle room but plan for chafe protection with split loom tubing. Pair it with a dedicated speed paddlewheel calibration in your menu for spot-on log readings, especially after fouling.

Why It Outshines Basic Transducers

Unlike flush-mount alternatives that struggle at speed, the B744V maintains bottom lock and target separation even as you push the throttle. Saltwater anglers appreciate the bronze over plastic for longevity, avoiding the delamination issues seen in lesser models. It's a smart investment for Lowrance HDS LIVE, Carbon, or Elite Ti series owners seeking pro-level data fusion with StructureScan or ActiveTarget overlays.

Frequently Asked Questions