Navico B744V 50/200 kHz Smart XSONIC 9-Pin TH w/Fairing Block

Upgrade your marine electronics setup with the reliable performance of a bronze thru-hull multisensor designed for serious boaters. This 50/200 kHz model delivers precise depth tracking, speed measurements through water, and temperature readings, all streamlined by a high-speed fairing block that cuts drag and optimizes beam angles for speeds up to 30 knots.

Crafted from durable bronze, it stands up to harsh saltwater environments while providing crystal-clear sonar returns. Whether you're navigating coastal waters or venturing offshore, this sensor ensures you stay informed without compromising hull integrity or boat speed.

Advanced Features for Superior Marine Sensing

• Dual-Frequency Sonar: 50 kHz for wide-area deep-water coverage (up to 1,500 feet) with a 45-degree beam, paired with 200 kHz for detailed shallow-water imaging (12-degree beam) reaching around 700 feet.
• Integrated Speed and Temp: Paddlewheel speed log for accurate vessel speed-through-water, plus a fast-response thermistor for real-time water temperature.
• 600-Watt Power Handling: Robust output for reliable performance across various sea conditions, minimizing signal loss.
• High-Speed Fairing Block: Reduces turbulence, aligns the transducer vertically for optimal signal transmission, and supports deadrise angles from 2 to 20 degrees.
• 9-Pin XSONIC Connector: Plug-and-play simplicity for seamless integration.

These elements combine to offer boaters a versatile tool that enhances fishfinding, bottom mapping, and navigation safety.

Exceptional Performance in Real-World Boating

The vertical beam orientation from the fairing block shines at higher speeds, delivering consistent data without the dropouts common in poorly mounted transducers. Boaters report exceptional clarity on structure and bait schools, thanks to the smart multisensor design that processes speed, temp, and depth simultaneously.

In choppy conditions, its bronze housing and secure thru-hull mount maintain stability, while the wide-to-narrow frequency switch lets you adapt on the fly—perfect for inshore fishing or deep-sea trolling.

Effortless Installation Tips

Mounting a thru-hull like this requires precision, but the included fairing block makes it straightforward. Select a hull spot forward of the prop and away from strakes for clean water flow. Drill a 2-inch hole, bed the transducer in sealant, and torque to spec. The fairing's adjustable design fits most hull shapes, ensuring a flush, hydrodynamic fit that won't slow you down.

Pro tip: Align the speed paddlewheel parallel to the waterline for pinpoint accuracy, and always test in a tank before sea trials to verify readings.

Seamless Compatibility with Top Chartplotters

This sensor pairs effortlessly with a range of popular displays, unlocking full transducer potential:

• Lowrance HDS series (original, Gen2, Gen2 Touch, Gen3)
• Lowrance Hook series
• Lowrance BSM-1 broadband modules
• Simrad NSS and NSS evo2
• Simrad BSM-1

No adapters needed—just connect the 9-pin cable and calibrate via your unit's menu for immediate results.

Why Boaters Trust This Thru-Hull Multisensor

Unlike plastic alternatives that falter in saltwater, bronze construction fights corrosion for years of service. The fairing block sets it apart from flush-mounts, offering better speed range without sacrificing sensitivity. Anglers and cruisers alike praise its all-in-one functionality, reducing clutter and wiring hassles while delivering data trusted by pros.

Invest in gear that performs when it counts—enhance your on-water confidence with proven thru-hull reliability.