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Simrad ES120-7C

The Simrad ES120-7C is a split-beam composite transducer with a large bandwidth.


The Simrad ES120-7C is a split beam composite transducer designed for fishery and underwater science applications. The beamwidth is 7 degrees at its nominal operational frequency.

The transducer offers a large bandwidth. This provides a fine range resolution, which is important for single fish detection and target strength measurements.

The transducer is normally mounted flush with the hull plating or the bottom of a blister. A clamping ring is used to secure the transducer body to a mounting ring welded into the hull plating or the bottom of a blister. The transducer cable penetrates the hull using a cable gland which consists of bushing, washer, rubber gasket and packing nipple. The transducer can also be flush mounted at the bottom of a drop keel.

The ES120-7C comes with two cable variants:

  • 5-pair open ended cable
  • Subconnector MacArtney MCIL8M

The ES120-7C with 5-pair open-end cable is best suited in a fixed installation, for example on a ship. The cable is shielded to make the transducer more immune to noise.

The ES120-7C provided with a connector is more suited for smaller vessels, for example unmanned surface vessels, or in a portable application. The most suitable way of mounting this transducer depends on the type of application. It is important to take precautions in noisy environment as the SubConn cable is not shielded.

Technical specifications

Download the Simrad ES120-7C data sheet.


See the information in the installation manual.

Order information

To order this product, or any of the optional items provided with it, contact your local dealer. Your dealer will also be able to help you with a detailed quotation including price and delivery information.

Product Order number In the box
Simrad ES120-7C
with open ended cable
KSV-204580 Transducer
Simrad ES120-7C
with subconnector
428873 Transducer

Optional items

These optional items are available for the installation. The items can be manufactured locally, or ordered from Simrad. The items are not included with the ES120-7C delivery, and must be ordered separately. The order number for the cable is included in case the original cable fitted to the transducer is too short.

Mounting- and clamping rings are required if you wish to install the transducer through a hull plating.

Product Order number In the box
Mounting ring ES1-204719  
Clamping ring ES1-203672  
Arctic tank 425089  
Transducer extension cable 642-078215 Used to extend open ended cable
Transducer extension cable 423127 10 m, with male and female subconnectors

Services and support

  • 24/7 Technical support

    Our 24/7 technical support team is there to help at any time, day or night, wherever your vessel is.


    We understand the importance of having the right parts, available in the right place, at the right time.

  • Training

    Ensure that your crew is properly and thoroughly trained. This will reduce operational risk, downtime and maximise return on asset investment.