Page 30: of Marine Technology Magazine (November 2024)

SUB BOTTOM PROFILERS

Jonathan Morvan,

Commercial manager at Hydroconsult and

Benoît Fraleu, CEO at Hydroconsult, with

Guillaume Jouve and

Calixte Genin from Exail.

Exail quires re-runs, or even revisiting a survey area. The user may full ocean depths. The bene? t of the parametric principle is want data in near real time for their decisions makings. Cloud that it can acquire high quality sub-bottom data with smaller based solutions giving the user necessary information is cer- transducer arrays.

tainly an important means to allow for sharing the data in an EM SBP is Kongsberg Discovery’s newest sub-bottom pro- ef? cient manner,” says Mathisen. ? ling solution. EM SBP uses the EM 124 or the EM 304 mul- “The need for meeting practical solutions such as installa- tibeam echo sounder hardware which for many larger survey tion space, power requirements, remote operations, as well as vessels already are available on board for bathymetry purpos- robustness against user mistakes at the same time as providing es. “EM®SBP allows you to use your multibeam system for expert users with high ? exibility, is technologically challeng- sub-bottom data acquisition and by that adding information ing, but yet interesting and very understandable.” and value to your seabed survey at low cost, low space and

Kongsberg Discovery’s sub-bottom pro? ling systems in- low power consumption,” says Mathisen.

clude the SBP29, a high power, narrow beam sub-bottom EdgeTech’s 3400 systems now have PVDF receivers and system that operates together with the deepwater Kongsberg “pipeline mode.” The 3400-OTS transmits wide band fre- multibeam systems. It operates at 2-9 kHz and can acquire quency modulated pulses utilizing the company’s propri- several simultaneous narrow beam sub-bottom observations etary full spectrum CHIRP technology. The system uses ? at in a fan across the vessel. In real-time it will pick the strongest multi-channel hydrophone array to generate high resolution re? ection and generate a multibeam sub-bottom image from images of the sub-bottom stratigraphy in oceans, lakes and several high resolution, narrow beams. rivers and provides excellent penetration in various bottom

The TOPAS is a family of parametric sub-bottom pro? ling types, says Doug McGowen, Director, Sales and Marketing systems available in con? gurations from shallow waters to at EdgeTech. 30 November/December 2024

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