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Groningen Seaports currently has 80 employees. The Dredging & Surveying department is responsible for the safety of navigation and for the ports accessibility for cargo vessels, regular hydrographic surveys play a key role in the port's availability. With the regular surveys that Groningen Seaports are doing, they have an exact knowledge how the ports' bathymetry looks and where special attention is required in order to prevent siltation of the port. Their vessel "Havenschap 1" has a Kongsberg EM2040 multibeam system installed in a moonpool together with a Kongsberg EA400 singlebeam dual frequency echosounder.  With the 210kHz and 33kHz channels of the singlebeam, Groningen Seaports gains even more knowledge about the fluid mud layer floating above the seabed in the port which is causing siltation of the port.  Monitoring this fluid mud layer in is a crucial part of the work that the Havenschap 1 and its crew is doing.  Until 2012 their multi-tasking surveyor navigated the boat and collected hydrographic data simultaneously without loosing an eye on perfect data quality. For health and safety reasons it was decided in 2012 there should be two men on board.


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