Sonde bronze traversante à faisceau conique HIGH CHIRP angle 20° CPT-S, 10m câble

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Raymarine

E70341

Bronze through-hull depth sounder with 20° conical beam HIGH CHIRP CPT-S, 10m cable

The Raymarine CPT-S E70341 transducer is a bronze through-hull HIGH CHIRP transducer, optimized with a 20° angle for high-speed hulls. Part of a generation prior to RealVision systems, it provides reliable fish and water column detection via a conical beam.

Includes: bronze through-hull conical beam transducer HIGH CHIRP 20° angle, 10m cable.

Angle: 20 degrees

0 degree 12 degrees 20 degrees

Retail priceBenefit from the professional rate

$281.79 USD

$281.79 USD ~~$321.15 USD~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

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Technical specifications

Supported sonar technologies	CHIRP conical, HIGH CHIRP
Operating voltage	12
Fishfinder frequencies	170-230
Operating temperature	-10 to 50 °C
Max depth reading	274.0
Transducer material	Bronze
Sonar connector type	Raymarine Owner
Cable length	10.0
Product width	70 mm
Integrated temperature sensor	Yes
Product height	130 mm
Compatible displays	Raymarine CP100, Raymarine Dragonfly
Product depth	70 mm
IP rating	IPX6/IPX7
Mounting type	Through-hull
Certifications	CE, EN ISO 8846:2017, 2013/53/EU
Temperature measurement range	-10 to 50 °C
Beam coverage angle	25 °
CHIRP high frequency	170-230
Fishing type	Saltwater fishing, freshwater fishing, fish detection
Integrated speed sensor	No
Release year	2017.0
User level	Intermediate

Detailed description

Designed for direct integration with Raymarine underwater detection systems, the Raymarine CPT-S E70341 bronze through-hull depth sounder offers HIGH CHIRP conical beam detection capability. This depth sounder is specifically suited to hulls with a deadrise angle of 16° to 24° thanks to its integrated 20° angle, ensuring optimal vertical beam performance. It comes with a 10-meter cable, facilitating installation on a variety of vessels.

Positioning and CHIRP technology

The CHIRP (Compressed High-Intensity Radiated Pulse) technology in the CPT-S range stands out for its ability to emit a frequency sweep over a wide band, providing better target separation and superior image clarity compared to traditional fixed-frequency depth sounders. Unlike DownVision depth sounders (CPT-D), which excel in structural seabed imaging, or newer systems like RealVision 3D, the CPT-S HIGH CHIRP focuses on precise fish detection and water column analysis with a conical beam. It is compatible with Raymarine CP100 depth sounder modules and Dragonfly multifunction displays equipped with this technology.

Installation and compliance

The through-hull design of the E70341 depth sounder ensures permanent installation and minimal hydrodynamic performance impact. Made of bronze, it is particularly well-suited to fiberglass and wooden hulls, offering enhanced durability in marine environments. This depth sounder complies with the essential requirements of European Directive 2013/53/EU and EN ISO 8846:2017, attesting to its safety and electromagnetic compatibility. It is imperative to refer to the installation manuals for connection details and full technical specifications, and to never operate it out of the water to avoid overheating.

Documentation

Type	Nom
	EN - Technical drawing - Bronze through-hull transducer with HIGH CHIRP conical beam 20° CPT-S, 10m cable
	EN - Declaration of Conformity - Bronze Thru-Hull Conical Beam HIGH CHIRP Angle 20° CPT-S, 10m Cable
	EN - Declaration of Conformity - CPT-S High CHIRP bronze through-hull transducer conical beam 20° angle, 10m cable
	EN - Declaration of Conformity - Bronze Thru-Hull Conical Beam HIGH CHIRP Transducer 20° CPT-S, 10m Cable
	EN - Notice d'installation - Sonde bronze traversante à faisceau conique HIGH CHIRP angle 20° CPT-S, 10m câble
	FR - Notice d'installation - Sonde bronze traversante à faisceau conique HIGH CHIRP angle 20° CPT-S, 10m câble

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the Raymarine CPT-S bronze through-hull depth sounder with 20° angle »

The Raymarine CPT-S through-hull CHIRP transducer in bronze with a 20° angle is a technically sound choice for motorboat or sailboat owners whose hulls have a significant deadrise angle, typically between 16° and 24°. The advantage of this angle compensation is that it ensures the CHIRP beam remains vertically oriented, maximizing detection and echo return clarity without requiring additional wedges. This bronze model is recommended for fiberglass or wooden hulls, offering better resistance to electrolysis and superior longevity compared to plastic versions in these environments, but it must absolutely be avoided on aluminum hulls.

Its HIGH CHIRP conical beam design is primarily intended for fish detection and water column analysis, providing superior target resolution compared to traditional transducers. While it lacks the lateral imaging or DownVision capabilities of newer models like the RealVision series, it remains a reliable and high-performance solution for traditional sonar displays. It integrates seamlessly with Raymarine Dragonfly combos or CP100 transducer modules paired with Raymarine multifunction displays from the a, c, e, and gS series. Installation requires precise hull drilling, but its through-hull design ensures minimal exposure to turbulence—a critical factor for signal quality at high speeds. It is essential to ensure flawless waterproofing during installation to prevent any water ingress.

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Bronze through-hull depth sounder with 20° conical beam HIGH CHIRP CPT-S, 10m cable

$281.79 USD

$281.79 USD ~~$321.15 USD~~

Frequently Asked Questions

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What detection technology does the Raymarine CPT-S E70341 transducer use?

The Raymarine CPT-S E70341 transducer uses HIGH CHIRP conical beam technology. This technology emits a frequency sweep over a wide band, enabling better target separation and superior image clarity for precise fish detection and water column analysis.

For which type of hull is this bronze through-hull transducer most suitable?

This bronze through-hull transducer is particularly suitable for fiberglass and wooden hulls. Its design incorporates a 20° angle, making it optimal for hulls with a deadrise angle (angle of the hull bottom) between 16° and 24°.

Can I test or operate the Raymarine CPT-S transducer out of the water?

No, it is essential never to test or operate the transducer out of the water. Operating it dry can cause overheating of the transducer and result in irreversible damage to the device.

What is the length of the cable supplied with the Raymarine CPT-S E70341 transducer?

The Raymarine CPT-S E70341 transducer is supplied with a 10-metre cable. This length is designed to facilitate installation on a variety of vessels.

Which Raymarine devices is this CPT-S transducer compatible with?

The CPT-S E70341 transducer is compatible with Raymarine CP100 sounder modules and Dragonfly multifunction displays equipped with CHIRP technology.

How does the CHIRP technology in this depth sounder compare to other Raymarine depth sounder types?

The HIGH CHIRP conical-beam technology in the CPT-S focuses on precise fish detection and water-column analysis. It stands out from other Raymarine technologies such as:

DownVision sounders (CPT-D) that excel in structural seabed imaging. Newer systems like RealVision 3D that provide a three-dimensional view. The CPT-S offers better target separation and superior image clarity compared to traditional fixed-frequency sounders thanks to its wide-band frequency sweep.

How should I maintain and clean my depth sounder to keep it performing well?

To maintain your depth sounder's performance, it is recommended to clean it regularly. Use a soft cloth and mild household detergent. For heavy buildup, you can use a scrubbing pad like a Scotch Brite™ green pad, taking care not to scratch the face of the transducer.

To prevent marine growth buildup, you can apply a thin coat of water-based antifouling paint to the transducer. Never use ketone-based paint, harsh solvents like acetone, or spray paint, as this could damage the transducer.

Does cutting the depth sounder cable void the warranty?

Yes, cutting the depth sounder cable voids the product warranty and also invalidates the European CE mark. The transducer cable cannot be repaired if cut and must be replaced.