Raymarine B175H-W 1000W D/T Through Hull Wide Beam Transducer 20° Angle

Raymarine B175H-W 1000W D/T Through Hull Wide Beam Transducer 20° Angle

Raymarine B175H-W 1000W D/T Through Hull Wide Beam Transducer 20° Angle is a powerhouse through-hull transducer designed for anglers who demand maximum coverage without sacrificing the high-resolution detail that CHIRP technology provides.

This 1000W bronze beauty is specifically engineered for high-speed performance on vessels with a hull deadrise between 16° and 24°. By using a tilted ceramic element, the beam is projected straight down to the seabed, ensuring the most accurate echo returns even when you're on the move.

Why choose the High-Wide (H-W) version?

Unlike traditional narrow-beam transducers, the B175H-W offers a constant 25° beamwidth across the entire frequency band. This provides up to twice the coverage under your boat, making it significantly easier to locate baitfish and track elusive gamefish in the upper water column. It is the ultimate tool for coastal and offshore fishing at depths of up to 150m (500ft).

Raymarine B175H-W 1000W D/T Through Hull Wide Beam Transducer 20° Angle Key Features

• High-Frequency Wide Beam: Operates across the 150–250 kHz frequency range with a fixed 25° beam for massive coverage and incredibly clear "fish arches."
• 1kW Power Output: Delivers the "punch" needed for superior target separation and high-definition bottom imaging.
• 20° Tilted Element: Expertly compensates for your boat's hull deadrise (ideal for 16°–24° angles), eliminating the need for a bulky fairing block and ensuring a flush, streamlined fit.
• Depth & Temperature: Provides highly accurate digital depth and fast-response water temperature readings to your Raymarine display.
• CHIRP Technology: Sweeps across a wide spectrum of frequencies to provide vastly superior target resolution compared to traditional non-CHIRP transducers.
• Low-Profile Bronze Housing: Designed for high-speed boats (such as centre consoles), the low-profile housing minimises drag and maintains a clean laminar flow for clear readings at speed.
• Plug & Play Compatibility: Designed to integrate seamlessly with Raymarine’s premium sonar modules and Axiom multifunction displays.

Technical Specifications:

• • Frequency: 150–250 kHz (High CHIRP)
  • Beamwidth: 25° (Constant)
  • Hull Material: Fibreglass or Wood (Bronze housing)
  • Deadrise Angle: 16° to 24°
  • Maximum Depth: Approximately 152m (500ft)
  • Mounting: Thru-Hull (Low profile)

Morgan Marine Pro Tip: If you are fishing in shallower coastal waters or targeting pelagic species in the top 100 metres, the "Wide" beam of the B175H-W is a game-changer. It allows you to see more of the water column at once, meaning you spend less time searching and more time fishing.

Raymarine B175H-W 1000W D/T Through Hull Wide Beam Transducer 20° Angle FAQs

What does the ‘W’ in B175H-W stand for, and how does it help me? 

The ‘W’ stands for Wide Beam. Unlike the standard B175H, which has a narrow beam (roughly 6° to 10°), the H-W version has a constant 25° beamwidth. This means you get much more coverage—roughly double—under the boat. It’s perfect for finding baitfish and tracking gamefish in the upper water column (down to about 150m/500ft).

Why do I need the 20° angled version specifically?

This transducer features a "Tilted Element." The internal ceramics are factory-set at a 20° angle to compensate for your boat's hull deadrise. If your hull has a deadrise angle between 16° and 24°, this 20° model ensures the sonar beam points straight down to the seabed rather than off to the side, giving you the most accurate depth and target readings.

Is the B175H-W compatible with my Raymarine display?

It is designed to work seamlessly with Raymarine’s Axiom, Axiom Pro, and Axiom 2 Pro ranges, as well as the CP470 and CP570 sonar modules. Depending on your specific setup, you may require an adapter cable (e.g., the A80328 for single transducer installs). If you’re unsure, give our team a call with your display model and we’ll confirm the exact cable you need.

Can I install this on a metal hull?

No. This is a bronze transducer, which is ideal for fibreglass or wood hulls. We strongly advise against installing bronze in a metal hull (aluminium or steel) due to the risk of electrolytic corrosion. If you have a metal boat, please ask us about the SS175H-W, which is the stainless steel equivalent.

Does this transducer provide speed readings?

No, the B175H-W provides high-accuracy Depth and Temperature (D/T). For speed readings, most of our customers rely on the GPS SOG (Speed Over Ground) from their Raymarine multifunction display.

Will this transducer work at high speeds?

Yes! One of the biggest benefits of the B175 series is its low-profile, flush-mount design. Because it sits nearly flush with the hull, it creates very little turbulence. When installed correctly in "clean" water (away from strakes or intakes), it will provide clear sonar arches even while you’re on the plane.

What is the maximum depth I can expect?

While the B175H-W is a powerful 1kW unit, the high-wide frequency is optimised for detail and coverage rather than extreme depth. You can expect excellent performance down to 150m (500ft). If you regularly fish deeper than 300m, you might want to consider pairing this with a Low-frequency unit like the B175L.

Do I need a fairing block?

No. That is the beauty of the Tilted Element design. It installs almost flush to the hull, so there is no need for a bulky fairing block. This reduces drag and makes it much easier to load your boat onto a trailer or lift.