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EM 2040 MKII Multibeam echosounder, Max. 600 m

EM 2040 MKII
Image courtesy of Port of London.

The EM 2040 MKII is a true wide band high resolution shallow water multibeam echo sounder, an ideal tool for any high resolution mapping and inspection application. With the release of the EM 2040 MKII series Kongsberg Maritime has upgraded the hardware and software to increase the swath and improve the data quality of our EM 2040 series.

Key facts

The operating frequency range of the EM 2040 MKII is 200 to 400 kHz. The operator can on the fly choose the best operating frequency for the application: 300 kHz for near bottom, 200 kHz for deeper waters and 400 kHz for very high resolution inspection. Due to the large operating bandwidth, the system has an output sample rate up to 60 kHz. The system can effectively operate with very short pulse lengths, the shortest pulse being 14 microseconds giving a raw range resolution (CT/2) of 10.5 mm. By utilising both CW and FM chirp pulses, the system can achieve long range capability with a high resolution giving the system a maximum depth range in cold ocean water of 600 m at 200 kHz and a swath width up to 900m. The angular coverage for the 200 and 300 kHz is up to 170°, with coverage up to 7.5 times water depth on a flat bottom. For a dual transducer system, 200° angular coverage or 10 times the water depth is achieved on a flat bottom. As an option the EM 2040 MKII can be delivered with dual swath capability, allowing a sufficient sounding density to meet survey coverage standards along track while maintaining a high vessel speed.


The EM 2040 MKII is a modular system, fully prepared for upgrading to cater for more demanding applications. The basic system has four units: a transmit transducer, a receive transducer, a processing unit and a hydrographic workstation . The EM 2040 MKII receiver is 0.7° and is delivered with a 0.4° or 0.7° transmitter(s). The transmit fan is divided into three sectors pinging simultaneously at separate frequencies ensuring a strong and beneficial dampening of multibounce interference. A single transmitter with dual receiver set-up fully exploits the unique angular coverage of our three-sector transmitter for full 200° angular coverage per ping. The specialised dual transmitter and receiver set-up is ideal where mounting requires a large separation of receivers, where mounting the transmitter at the keel is not an option or for ROV pipeline surveying and free span detection. This configuration transmits on a single sector per transmitter with selectable frequency in steps of 10 kHz from 200 to 400 kHz. The standard depth rating of the EM 2040 MKII transducers is 6000 m, making it ideal for operation on subsea vehicles such as ROVs or AUVs.

Key features

  • High resolution
  • Wide frequency range
  • FM chirp
  • Roll, pitch and yaw stabilisation
  • Nearfield focusing - both on transmit and receive
  • Short pulse lengths, large bandwidth
  • Seabed image
  • Depth rated to 6000 m
  • Easy to install


  • Water column logging
  • Water column display
  • Extra detections
  • Dual swath
  • Dual RX
  • Dual TX
EM 2040 MKII transducer

Technical specifications

  • Frequency range: 200 to 400 kHz
  • Max ping rate: 50 Hz
  • Swath coverage sector: Up to 170° (single receiver) / 200° (dual receiver)
  • Beam patterns: Equiangular, equidistant and high density
  • No. of beams per ping: 400 (Single RX)/800 (Single RX, Dual Swath)/1600 (Dual RX, Dual Swath)
  • Roll stabilised beams: ± 15°
  • Pitch stabilised beams: ± 10°
  • Yaw stabilised beams: ± 10°

Services & Aftermarket 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 will manage your call from the time it is received to the time the issue is resolved.

The team has direct access to the experts in our product centres, should additional support be required, and for the more complex issues a product specialist will be assigned to you. Our priority is to get the right expertise quickly matched with the issue to provide the answers you need.

Support information this product

Key support information for this product is found here:

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

We have streamlined our operations to reduce lead-times and increase spares availability.

Contact us

Our 24/7 technical support team is there to help at any time of day or night wherever your vessel is located. They manage your call from the time it is received to the time the issue is resolved.

Contacting any of these numbers will put you through to our global support team:

Our local representatives will respond to your support requirements 24/7. If you want to know more about how our enhanced service delivery will benefit you, please contact our nearest Office.

Product Training

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It also enables you to meet regulatory standards, improve crew safety and retain key personnel. In our state of the art training centres qualified and experienced trainers are able to provide your crew with practical training tailored to suit your products, systems and operational requirements. Our instructors can also train your crew on-board your vessel.

From hands on experience on live products in our training centres, to experiencing real life scenarios in our world class simulators all our courses are designed to focus on efficient and safe operation and maintenance of your Kongsberg Maritime equipment.


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