Raymarine B175H Bronze Low Profile 1000W D/T Through Hull Transducer 12° Angle

Raymarine B175H Bronze Low Profile 1000W D/T Through Hull Transducer 12° Angle

Raymarine B175H Bronze Low Profile 1000W D/T Through Hull Transducer 12° Angle is a high-performance, 1kW CHIRP-ready transducer designed for those who demand the very best target separation and shallow-to-mid-depth performance without the need for a bulky fairing block.

Engineered with a 12° tilted element, this "Low Profile" transducer sits nearly flush to your hull. This design significantly reduces drag and improves water flow, allowing for exceptionally clear sonar readings even when you're running at high speeds. Because the ceramic element is permanently tilted inside the bronze housing, the beam is directed straight down to the seabed, compensating perfectly for your boat's hull deadrise.

The High-Frequency CHIRP (130-210 kHz) band is the ultimate tool for pinpointing fish holding tight to structures like wrecks, reefs, and rocky bottoms. With a narrow beamwidth, it provides crisp, high-resolution imagery and incredible separation between baitfish and larger game fish. Whether you are hunting bass over a local wreck or tracking pelagics offshore, the B175H delivers the clarity you need to make every trip a success.

Raymarine B175H Bronze Low Profile 1000W D/T Through Hull Transducer 12° Angle Key Features

• High-Power 1kW Output: Penetrates deeper and provides more detail than standard 600W units, with a maximum depth range of approximately 304m (1,000ft).
• High-Frequency CHIRP: Operates across the 130kHz to 210kHz spectrum, offering up to 80kHz of total bandwidth for superior target definition.
• 12° Tilted Element: Offset internal ceramics ensure the sonar beam points vertically, designed for hulls with an 8° to 15° deadrise.
• Low Profile Bronze Housing: Dramatically reduces drag compared to traditional "block" transducers and is safe for use on trailered boats.
• Target Precision: A narrow 10° to 6° beamwidth allows you to isolate individual fish and fine-tune your position over small structures.
• Integrated Sensors: Provides both highly accurate depth data and fast-response water temperature readings.
• Premium Construction: Robust bronze housing suitable for fibreglass (GRP) and wood hulls.
• Raymarine Compatible: Designed for seamless integration with Raymarine CHIRP sonar modules (e.g., CP470/CP570) and Axiom displays. Note: Connection may require a specific adapter cable depending on your display model.
  

Technical Details:

• • Frequency Range: 130-210 kHz
  • Power Rating: 1000 Watts
  • Hole Diameter for Installation: 95mm (3.75")
  • Cable Length: 10m (33ft)

Morgan Marine Expert Tip: If you are unsure if your hull deadrise falls within the 8° to 15° range required for this 12° model, please get in touch with our team. We’re here to ensure you get the perfect fit for your vessel.

Raymarine B175H Bronze Low Profile 1000W D/T Through Hull Transducer 12° Angle FAQs

What makes the B175H different from other through-hull transducers?

The B175H is a 1,000W "High Frequency" CHIRP transducer. Unlike traditional transducers that ping on one frequency, CHIRP technology sweeps across a range (130-210 kHz for this model). The ‘H’ (High) designation means it uses a narrow beamwidth, which is absolutely superb for pinpointing fish tight to wrecks, reefs, and the seabed with incredible target separation.

Why do I need the 12° tilted element version?

This is the most critical part of your purchase. Because boat hulls are V-shaped, a standard transducer would point its beam off to the side. The B175H 12° model has its internal ceramic element permanently tilted at 12 degrees.

• • Suitability: This model is designed for hulls with a deadrise angle of 8° to 15°.
  • The Result: It compensates for the slope of your hull so the sonar beam points straight down at the seabed, ensuring you get accurate depth readings and the clearest possible fish arches.

What is the maximum depth I can expect?

As a high-frequency transducer, the B175H excels in shallow to mid-depth waters. You can typically expect excellent performance down to roughly 300 metres (1,000 feet). If you are regularly fishing in much deeper "blue water" canyons, you might consider pairing this with a Low-frequency (B175L) unit.

Is the B175H "Low Profile" design an advantage?

Absolutely. Because it sits nearly flush against the hull (protruding only a few millimetres), it creates far less drag and turbulence than a traditional block-style transducer. This makes it the perfect choice for high-speed powerboats and centre consoles, as it maintains a clean signal even when you’re on the plane.

Is this transducer compatible with my Raymarine display?

The B175H is designed to work seamlessly with Raymarine’s CHIRP-enabled sonar modules and multifunction displays (MFDs).

• • Axiom Series: Direct connection or via a sonar module (CP470 / CP570) depending on your specific Axiom model.
  • Cables: If you are using this as a single transducer, you will require the A80328 single transducer operation cable. If you are pairing it with another B175 (like a Low or Medium frequency version), you will need the A012146 Y-cable.

Can I install a bronze transducer on any hull?

Bronze transducers like the B175H are ideal for fibreglass (GRP) or wooden hulls.

Important: Do not install a bronze transducer on an aluminium or steel hull, as this will cause galvanic corrosion which can damage your boat. For metal hulls, please contact us about stainless steel alternatives.

Does it measure temperature as well as depth?

Yes, the B175H is a "D/T" (Depth and Temperature) unit. It features a fast-response water temperature sensor, giving you accurate real-time data on your Raymarine display—vital for finding those temperature breaks where predatory fish often hide.

How difficult is the installation?

While it is a "Low Profile" unit, it does require a hole to be cut through your hull. We always recommend professional installation to ensure the hull is properly sealed and the "Arrow" on the top of the transducer is pointed towards the keel (this ensures the 12° tilt is oriented correctly).