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Multibeam echosounders

Advantages of a multibeam echo sounders

We are a leading manufacturer of multibeam echosounder systems for seabed mapping. Our product range includes models for all water depths and virtually any application. The benefit of multibeam echo sounders is that they map the seafloor by a fan of narrow acoustic beams, thus providing 100% coverage of the bottom. The resulting seabed maps are more detailed than those obtained using single-beam mapping. The maps are also produced faster, reducing your ship survey time.


Model Frequency Min/max depths*) Max swath width Available configuration
GeoSwath Plus Compact 125, 250, 500 kHz 0.3 - 200 m
0.3 - 100 m
0.3 - 50 m
12xD
780 m
390 m
195 m
Available configuration
125, 250, 500 kHz
GeoSwath Plus 125, 250, 500 kHz 0.3 - 200 m
0.3 - 100 m
0.3 - 50 m
12xD
780 m
390 m
195 m
Available configuration
125, 250, 500 kHz
EM 2040C 200 - 400 kHz 0.5 - 490 m Single head:
4.3xD / 525m /
130 degrees

Dual head:
10xD / 625m /
200 degrees
1x1
Single and dual head
EM 2040 200 - 400 kHz 0.5 - 600 m Single RX:
5.5xD / 800m /
140 degrees

Dual RX:
10xD / 900m /
200 degrees
0.4x0.7
0.7x0.7
Single and dual RX conf. for increased swath and with single and dual swath capability for increased seafloor coverage
EM 710RD 70 - 100 kHz 3 - 600 m 5.5xD / 1100 m /
140 degrees
1x2, 2x2*
*Short CW transmit pulses
EM 710S 70 - 100 kHz 3 - 1000 m 5.5xD / 1800 m /
140 degrees
0.5x1, 1x1, 1x2 and 2x2*
*CW transmit pulses
EM 710 70 - 100 kHz 3 - 2000 m 5.5xD / 2300 m /
140 degrees
0.5x1, 1x1, 1x2 and 2x2*
*CW and FM transmit pulses
EM 302 30 kHz 10 - 7000 m 5.5xD / 8000 m/
143 degrees
0.5x1, 1x1, 1x2, 2x2, 2x4 and 4x4*
*Other customer specific conf. available on request
EM 122 12 kHz 20 - 11000 m 6xD/35000 m /
143 degrees
0.5x1, 1x1, 1x2, 2x2 and 2x4*
*Other customer specific conf. available on request

Integrating more than one multibeam echo sounder

Depending upon the application, it can make sense to combine 2 or 3 multibeam echosounders with different frequencies into one system. A higher frequency instrument will have better resolution and accuracy than a lower frequency instrument for a certain water depth. The different frequency models listed below are compatible and can be combined freely. If only one instrument is used at a time, a single operator unit is sufficient. However, when more than one frequency is activated for simultaneous operation, one operator unit is required for each instrument.

High accuracy

Our multibeam echo sounders are professional tools for precision mapping of the seabed, complying with the performance standards defined by the International Hydrographic Organization’s performance standards, S-44 edition 5. Our instruments are all characterized by high mapping productivity in combination with exceptionally high sounding accuracy, and a dense pattern of soundings to cover the seafloor in order to reveal all details on the bottom. In addition to the soundings, the multibeam echo sounders produce seabed image data similar to a side scan sonar image. This dataset is useful for characterizing the seabed material properties and sometimes for detecting small features not visible in the sounding data.

Complete mapping system

To form a complete mapping system, our multibeam echo sounders are connected to positioning equipment, heading and motion sensing instruments, as well as sound velocity sensors in order to position the soundings correctly.

Portable solutions

Portable solutions can be offered for inshore surveying. Permanent or semi-permanent mounting of the acoustic transducers is recommended for offshore work with surface vessels. Solutions for ROV- and AUV-based multibeam surveying are available. We have considerable experience and can assist you with practical advice.

Realtime software

Our multibeam echo sounders are operated from a graphic display workstation. Our realtime software includes extensive tools for visualizing the sounding data as well as the seabed image data, and to check the system calibration and the data quality. Preliminary maps can be produced and plotted almost immediately after a survey is finished.

Post-processing software

Post-processing software for cleaning and correcting of multibeam sounding data is offered, as well as tools for producing seabed image mosaics and classification of the seabed sediment types. We offer solutions for complete data processing all the way to the final products, including electronic chart data in the form of S-57 databases and plotting of paper charts.

Prepared for integration

Our multibeam echo sounders are prepared for integration with other acoustic instruments and can be used as subsystems in integrated survey instrumentation solutions, involving centralized synchronization of the transmission sequence and Marine Data Management.

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