Sonde bronze traversante à faisceau conique HIGH CHIRP angle 12° CPT-S, 10m câble

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Raymarine

E70340

Bronze through-hull depth sounder with 12° conical HIGH CHIRP beam CPT-S, 10m cable

The RAYMARINE E70340 CPT-S through-hull bronze transducer delivers precise underwater detection with its 12° HIGH CHIRP conical beam. Designed for enhanced durability in marine environments, it is ideal for Raymarine MFDs requiring a high-performance traditional sonar. The transducer comes with a 10m integrated cable.

Angle: 12 degrees

0 degree 12 degrees 20 degrees

Retail priceBenefit from the professional rate

£227.32 GBP

£227.32 GBP ~~£238.68 GBP~~

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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

Opt for additional installation assistance

Technical specifications

Supported sonar technologies	CHIRP High Frequency
Fishfinder frequencies	170-230
Operating temperature	-10 to +50
Max depth reading	274.0
Transducer material	Bronze
Sonar connector type	Raymarine CPT-S
Cable length	10.0
Compatible displays	Raymarine Axiom, Element, Dragonfly (with adapter if required)
Product depth	100
IP rating	IPX6/IPX7
Wireless connectivity	No
Mounting type	Through-hull
Certifications	2013/53/EU, EN ISO 8846:2017
Beam coverage angle	25
CHIRP high frequency	170-230
Integrated speed sensor	No
Release year	2017.0
Warranty	2.0

Detailed description

The RAYMARINE E70340 bronze through-hull depth sounder is a subsea detection solution designed for CHIRP fishfinder systems. This CPT-S model is a bronze through-hull transducer with a 12° conical HIGH CHIRP beam, compensating for hull deadrise. It comes with a 10-metre integrated cable, simplifying installation on a variety of vessels.

Precise CHIRP Sonar Technology

Integrated into Raymarine’s CPT-S range, this transducer uses HIGH CHIRP technology to deliver detailed sonar returns and improved target separation. Unlike DownVision systems that provide photo-realistic seabed imaging, this model focuses on a traditional conical beam, optimized for fish detection and accurate seabed tracking at varying depths. Its bronze construction makes it a more durable option than plastic versions (such as the A80447 for the same 12° beam angle), particularly suited to demanding marine environments and fibreglass or wooden hulls.

Installation and Compliance

The E70340 transducer is designed for through-hull installation, requiring hull drilling. The 12° beam angle is specifically selected for hulls with moderate deadrise, ensuring the sonar beam is directed vertically toward the seabed. It is critical not to cut the transducer’s cable, as this will significantly degrade fishfinder performance, void the warranty, and invalidate the EU CE mark. This product complies with harmonised standards 2013/53/EU and EN ISO 8846:2017, ensuring reliability and safety for marine use. For optimal performance, the transducer must be used only in water to prevent overheating.

Documentation

Type	Nom
	EN - Technical drawing - Bronze through-hull transducer with HIGH CHIRP conical beam 12° CPT-S, 10m cable
	EN - Declaration of Conformity - Bronze Thru-Hull Cone Beam HIGH CHIRP Transducer 12° CPT-S, 10m Cable
	EN - Declaration of Conformity - CPT-S High CHIRP bronze thru-hull transducer 12° beam angle, 10m cable
	EN - Declaration of Conformity - High CHIRP conical beam bronze thru-hull transducer CPT-S, 12° angle, 10m cable
	EN - Notice d'installation - Sonde bronze traversante à faisceau conique HIGH CHIRP angle 12° CPT-S, 10m câble
	FR - Notice d'installation - Sonde bronze traversante à faisceau conique HIGH CHIRP angle 12° CPT-S, 10m câble

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the Raymarine CPT-S bronze 12° CHIRP transducer »

The Raymarine CPT-S E70340 transducer is a sound technical choice for recreational boaters and anglers seeking a reliable and robust CHIRP sonar solution. Unlike RealVision 3D multi-element sensors that provide sophisticated imaging, this model focuses on the performance of a dedicated HIGH CHIRP conical beam. Its bronze construction is a major asset for durability, outperforming plastic versions in harsh marine environments, particularly for boats kept afloat year-round or in saltwater. It is particularly well-suited to wooden or fiberglass hulls, where a through-hull installation is preferred to avoid turbulence.

The 12° beam angle of the transducer is specifically designed to compensate for the deadrise of hulls with moderate angles, ensuring the sonar beam is perpendicular to the seabed for optimal readings. It is essential to verify the compatibility of this angle with your hull design before installation to avoid beam tilt that would degrade performance. Although the CPT-S series is an earlier generation compared to newer RealVision systems, it remains relevant for compatible Raymarine MFDs (such as Dragonfly models or certain A, eS, and gS series) requiring a traditional CHIRP sonar for precise fish detection and bathymetry.

Through-hull installation, while more complex than a transom-mount setup, offers superior hydrodynamic performance and better transducer protection. It requires careful attention to hull drilling and sealing to maintain watertight integrity. This transducer does not provide DownVision or SideVision imaging, so it should be prioritized if your primary need is a high-performance traditional CHIRP sonar without advanced imaging features, or if you are complementing an existing system.

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Bronze through-hull depth sounder with 12° conical HIGH CHIRP beam CPT-S, 10m cable

£227.32 GBP

£227.32 GBP ~~£238.68 GBP~~

Frequently Asked Questions

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What is HIGH CHIRP technology and what is the purpose of the cone beam of this depth sounder?

The HIGH CHIRP technology used by this Raymarine CPT-S depth sounder provides highly detailed sonar returns and better separation of underwater targets. Unlike DownVision imaging systems, the traditional cone beam of this depth sounder is optimized for precise fish detection and seabed tracking at various depths.

Why does this through-hull transducer have a 12° angle?

The 12° angle of this transducer is specifically designed to compensate for the deadrise of your vessel's hull. This ensures the sonar beam is directed vertically toward the seabed, providing optimal performance and accurate readings, particularly for hulls with moderate deadrise.

What type of installation is required for this Raymarine transducer?

This transducer is a through-hull model, which means it requires drilling the hull of your boat for installation. Raymarine recommends installation by a certified installer to ensure proper implementation and to benefit from the enhanced warranty.

Can I cut the depth sounder cable if its 10-meter length is excessive for my boat?

No, it is imperative not to cut the depth sounder cable. Trimming the cable will significantly reduce the fishfinder’s performance, void the product warranty, and invalidate the European CE mark. If the cable is cut, it cannot be repaired and must be replaced.

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

This CPT-S transducer is designed to be compatible with Raymarine CHIRP sounder systems. It typically works with Raymarine multifunction displays (MFDs) from the Axiom and Element series, as well as with certain Dragonfly models that support CPT-S conical-beam transducers.

Why is this transducer made of bronze rather than plastic?

This transducer is made of bronze to provide increased durability, particularly suited to demanding marine environments. Bronze is a more robust option than plastic and is recommended for fiberglass or wooden hulls, ensuring better longevity and resistance to the elements.

How should I maintain and clean my depth sounder to ensure its performance?

To maintain your depth sounder's performance, follow these recommendations:

Apply a thin coat of water-based antifouling paint to the depth sounder to prevent marine growth buildup. Reapply every 6 months or at the start of each season.

Clean the depth sounder with a soft cloth and mild household detergent.

For stubborn grime, use a scrubbing pad such as a Scotch Brite™ pad, taking care not to scratch the face of the depth sounder.

Warning: Never use ketone-based paint, spray paint, or harsh cleaning solvents such as acetone, as they will damage the depth sounder.

Which compliance standards does this Raymarine transducer meet?

This Raymarine E70340 transducer complies with European harmonised standards. It meets Directive 2013/53/EU for marine equipment and EN ISO 8846:2017, ensuring reliability and safety for marine use.