Raymarine B175M Bronze CHIRP 0° Thru-Hull Transducer

Unlock Crystal-Clear Underwater Views with the Raymarine B175M

Imagine gliding through coastal waters, spotting schools of fish huddled around a wreck or reef with pinpoint accuracy. The Raymarine B175M Bronze CHIRP Thru-Hull Transducer turns that vision into reality for serious anglers and boaters. This low-profile powerhouse delivers exceptional target separation and bottom detail at medium depths, making it a game-changer for center consoles and smaller vessels chasing everything from snapper to grouper.

Crafted from durable bronze, it mounts flush thru-hull on hulls with 0° to 7° deadrise, ensuring a streamlined profile that minimizes drag at high speeds. Paired with Raymarine's CHIRP-compatible sonar systems, it sweeps across 80-130 kHz, painting vivid images up to 1,500 feet down—perfect for those thrilling days probing structure-rich zones without missing a beat.

Superior CHIRP Performance Tailored for Mid-Depth Adventures

CHIRP technology sets the B175M apart by transmitting a wide spectrum of frequencies simultaneously. This results in razor-sharp fish arches, precise bait ball detection, and detailed bottom contours that traditional fixed-frequency transducers can't match. The medium-frequency band excels in revealing fish at depths where low-freq options lose focus and high-freq ones fall short.

• Dynamic Beam Width: Adjusts from 24° to 16° for optimal coverage—wide enough for searching, narrow for locking on targets.
• 1kW Power Handling: Punches through thermoclines and murky water for reliable returns even in challenging conditions.
• Integrated Depth and Temperature Sensor: Tracks water column changes to help you adjust trolling speeds or locate temperature breaks where fish stage.

Boat owners rave about how it transforms their displays, turning fuzzy sonar screens into high-definition underwater maps that boost catch rates on every outing.

Key Specifications at a Glance

These specs make it versatile for offshore runs or inshore structure fishing, with urethane face for reliable acoustic coupling.

Seamless Installation and Pro Tips for Peak Performance

Installing the B175M is straightforward for thru-hull setups—drill, bed in sealant, and connect via the included cable. Position it forward and parallel to waterlines for dead-on readings. Pro anglers recommend pairing it with a dedicated operation cable for single-transducer mode to avoid interference.

To maximize results:

• Calibrate gain settings on your Raymarine unit to match sea conditions.
• Run at hull speed during installs to check for air bubbles.
• Combine with forward-facing sonar for a complete ecosystem view.

Its low-drag design keeps your boat slicing through waves without compromising speed or fuel efficiency.

Real-World Wins: From Reefs to Rigs

Captains targeting mid-depth reefs find the B175M's resolution unbeatable for separating snapper from rock shadows. In the Gulf or Atlantic, it shines on wrecks holding amberjack, while baitfish schools pop against the backdrop. Unlike broader-coverage options, its focused beam cuts clutter, helping you drop lines exactly where fish hold. Coastal cruisers appreciate the temp sensor for finding bird piles or current rips teeming with life.

Frequently Asked Questions