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EM 2040 MKII Multibeam echosounder, Max.600m

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

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 density and ultra high density
  • No. of beams per ping: 512 (Single RX)/1024 (Single RX, Dual Swath)/1600 (Dual RX, Dual Swath)
  • Roll stabilised beams: ± 15°
  • Pitch stabilised beams: ± 10°
  • Yaw stabilised beams: ± 10°
EM 2040 MKII Transducer

Realtime software

Kongsberg Maritime software

Third party software

Post processing software

Note: KONGSBERG is not responsible for any system malfunction caused by 3rd party software. 

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.

    Contact us:

  • Spares

    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.

How can I help you?

Helge Uhlen
Director Sales Underwater Mapping

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