Full Content is available to subscribers

Subscribe/Learn More  >

New Approach of Deep Sea Dredging

[+] Author Affiliations
Ewout van Duursen, Mark Winkelman

Damen Dredging Equipment, Nijkerk, The Netherlands

Paper No. OMAE2011-49351, pp. 307-312; 6 pages
  • ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology; Polar and Arctic Sciences and Technology
  • Rotterdam, The Netherlands, June 19–24, 2011
  • ISBN: 978-0-7918-4433-5
  • Copyright © 2011 by ASME


A new approach of trailing suction dredging is presented. This approach is especially useful for dredging at depths over 100m. Normally a Jumbo Trailing Suction Hopper Dredger is used for dredging at depths of over 100m. This requires a large investment. The expensive dredging equipment is only used while dredging. This equipment is mainly “dead cargo” when sailing to the place of delivering the sand. Our new approach requires a significant lower investment. As the dredging equipment is used continuously, idle time is decreased and time for return of investment is shortened. The dredging depth is independent of the length of the trailing suction pipe and thus the length of the ship, unlike a normal Trailing Suction Hopper Dredger. Our approach consists of modular dredging equipment placed on e.g. a standard Platform Supply Vessel. By using the dredging equipment on this vessel, standard barges are continuously filled with sand. The dredging equipment consists of a submersible dredging unit connected to a hose. This dredging unit is suspended by wires from the Platform Supply Vessel. It is lowered to the required dredging depth by winches. The application of the dredging unit is like a normal Trailing Suction Hopper Dredger. The barges are loaded while sailing along the Platform Supply Vessel. The position of the dredging unit is constantly monitored. An extensive research project is initiated to develop this concept. Several scale model tests are performed at MARIN. Also a numerical model was designed. Extensive tests were performed on the hose. Another test was performed at TU Delft to investigate the transport of sand/water mixture through a hose stored on a reel. All this research has resulted in a reliable, inexpensive system to dredge at sea at great depths over 100m.

Copyright © 2011 by ASME
Topics: Dredging , Seas



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In