Furuno B75M Bronze Thru-Hull 0° Tilt - Med Frequency

Upgrade your vessel's sonar capabilities with a transducer designed for precision and durability in demanding marine environments. This medium-frequency CHIRP model stands out for its ability to deliver crystal-clear underwater images, helping anglers and navigators spot fish, structure, and bottom contours with ease. Crafted from robust bronze, it withstands the rigors of saltwater exposure while maintaining peak performance over time.

Superior CHIRP Technology for Enhanced Detection

At the heart of this thru-hull sensor lies advanced CHIRP functionality operating across 80-130 kHz. Unlike fixed-frequency systems, CHIRP sweeps through a broad range of frequencies, producing remarkably detailed returns. This translates to sharper fish arches, better separation between closely packed targets, and accurate depth readings up to 900 feet. Whether you're trolling for pelagics in open water or scanning reefs closer to shore, the adjustable beamwidth—from 24 degrees at lower frequencies to 16 degrees at higher—adapts to your needs, optimizing coverage without sacrificing resolution.

Built Tough for Real-World Boating

Bronze construction isn't just about aesthetics; it's a deliberate choice for corrosion resistance in harsh saltwater conditions. The low-profile, 0-degree tilt design ensures a flush fit on hulls with 0-7 degree deadrise, minimizing drag and turbulence that could interfere with readings. Paired with a temperature sensor, it provides dual functionality, giving you surface water insights alongside depth data—essential for understanding baitfish behavior and thermoclines.

Seamless Integration and Reliable Power

Engineered for straightforward thru-hull, flush, or tilted mounting, installation becomes a breeze for those with basic marine skills. The 600-watt power rating punches above its weight, delivering strong signals even in rough seas or deeper waters. With a generous 39.3-foot cable length, routing to your display unit offers flexibility, reducing signal loss risks. A 10-pin connector ensures compatibility with a wide array of modern fishfinders, making it a versatile upgrade path.

Performance Tips from Seasoned Boaters

To maximize results, position the transducer forward of any prop wash or strakes for clean water flow. In high-speed scenarios, the tilted element options (though this model is optimized at 0 degrees) help maintain bottom lock. Anglers report exceptional target ID on species like tuna or snapper, thanks to the medium-frequency sweet spot that balances penetration and detail. Regular hull cleaning around the face prevents marine growth from dulling performance, extending its lifespan significantly.

Why It Excels for Offshore and Coastal Adventures

Boaters who venture beyond sight of land appreciate how this unit cuts through clutter from bait balls or suspended debris. Its sensitivity shines in varied conditions—from calm bays to choppy swells—providing consistent data that builds confidence on the water. Temperature readings add another layer, helping correlate water column changes with fish activity patterns observed on screen.