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EM 712 Multibeam echosounder, Max. 3600 m

The EM 712 multibeam echo sounder is Kongsberg Maritime's second generation high to very high resolution seabed mapping system capable of meeting all relevant survey standards.
Product line manager Kjetil Jensen elaborates around EM 712 USV.

EM 712 system configuration can be tailored to the user's requirement, allowing for choice of beam widths as well as transmission modes. The minimum survey depth is from less than 3 meters below the transducers, and the maximum depth is an unmatched 3600 meters. Across track coverage (swath width) is now more than 3500 meters. This is almost double the range performance of the EM 710.

Further key advances made for the EM 712 include low-noise receiver transducers and electronics in addition to a smaller, lighter form factor, enabling for more flexible installation on a wider variety of vessels.

EM 712 multibeam echo sounder versions

There are three basic versions of the EM 712 multibeam echo sounder each with different range performances as follows:

  • EM 712 - Full performance version
  • EM 712 S - CW pulse forms only
  • EM 712 RD - Short CW pulse only

Ping rate as a function of depth

Survey speed

So at 100 m depth, with full swath width ± 70 degrees the system has 2 pings per second, or 4 sounding profiles. The maximum survey speed while maintaining 100 % bottom coverage is then 3.4 m/sec or 6.8 knots. By reducing the swath width to ± 55 degrees, the ping rate is increased to 3.4 and the survey speed can then be raised to 11.5 knots. Each sounding profile consists of 400 soundings.


  • High resolution
  • Wide frequency range
  • FM chirp
  • Roll, pitch and yaw stabilization
  • Nearfield focusing
  • Water column display
  • Seabed image
  • Dual swath
  • Modular design

Feature Options

  • Water column logging
  • Extra detections

Realtime software

Post processing software

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

If you would like to be informed when a software update is available, please click here to sign up to the mailing list.

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.

How can I help you?

Helge Uhlen
Vice President Underwater Mapping


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