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Mapping through fluid mud

The presence of suspended sediments in water bodies presents significant challenges for the dredging industry. Existing methods to determine nautical depths are intrusive single point methods relying on in situ density or shear strength measurements1,3 or low-frequency single-beam echosounder recordings1,2. The use of single-beam echosounders is however systemically problematic as they are not practical in satisfying the CATZOC A1 coverages required for contemporary electronic navigational charting. The presence of suspended sediments in water bodies presents significant challenges for the dredging industry. Existing methods to determine nautical depths are intrusive single point methods relying on in situ...

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S-44 and the systematic error

IHO standard S-44 is often used (or misused) to specify the quality of a hydrographic survey. While it is a useful tool, it is easy to misinterpret. One ‘misuse’ is...

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Dredging Workshop

The Hydrographic Society Benelux, together with the dredgers organisation CEDA, assembled on 30 September at the headquarters of Van Oord in Rotterdam, the Netherlands. After a buffet dinner, the participants...

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Understanding Dredging

Dredging is essential to the construction or maintenance of much of the infrastructure on which our economic prosperity and social well-being depend. It is also an important tool to restore...

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Dredging Point-cloud Software

Charting underwater structures, soils and project progression using GPS, sonar, single and multibeam systems produces a huge amount of data that needs to be analysed. Vast project areas can be...

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