General information
A trailing suction hopper dredger or TSHD trails its suction pipe when working, and loads the dredge spoil into one or more hoppers in the vessel. When the hoppers are full the TSHD sails to a disposal area and either dumps the material through doors in the hull or pumps the material out of the hoppers. Generally these full block ships have a length between 40 to 130 m. The vessels are, highly manoeuvrable and they have a high installed power to operate the dredging equipment. Vessels operate regularly in shallow water conditions.
A trailing suction hopper dredger or TSHD trails its suction pipe when working, and loads the dredge spoil into one or more hoppers in the vessel. When the hoppers are full the TSHD sails to a disposal area and either dumps the material through doors in the hull or pumps the material out of the hoppers. Generally these full block ships have a length between 40 to 130 m. The vessels are, highly manoeuvrable and they have a high installed power to operate the dredging equipment. Vessels operate regularly in shallow water conditions.
Services & Activities
The Ships Powering Department is involved in the development of the hull design, the power optimisation and the cavitation observation.
The Manoeuvring & Seakeeping Department verifies the stringent demand on the manoeuvrability.
The Nautical Centre MSCN offers training of the crew and the simulations of dredging operations.
The Trials & Monitoring Department is involved in full-scale measurements of ship performances, cavitation observation, pulse and loads measurements.
The Ships Powering Department is involved in the development of the hull design, the power optimisation and the cavitation observation.
The Manoeuvring & Seakeeping Department verifies the stringent demand on the manoeuvrability.
The Nautical Centre MSCN offers training of the crew and the simulations of dredging operations.
The Trials & Monitoring Department is involved in full-scale measurements of ship performances, cavitation observation, pulse and loads measurements.
Facilities & Tools
Dredgers are tested in the following MARIN facilities:
Dredgers are tested in the following MARIN facilities:
- Deep Water Tank: resistance and propulsion tests
- Depressurised Tank: cavitation observation.
- Seakeeping and Manoeuvring Basin: seakeeping and manoeuvring behaviour
Dredger behaviour is simulated with the following tools:
RAPID: Calculation of wave resistance and potential flow
PARNASSOS: Calculation of the viscous flow around ships hulls
DESP: Prediction of propulsive performance
PARNASSOS: Calculation of the viscous flow around ships hulls
DESP: Prediction of propulsive performance
Software Sales
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Experience
The list below gives a review of hopper dredger model tests carried out at MARIN:
The list below gives a review of hopper dredger model tests carried out at MARIN:
- Various ships for contracters like Van oord, Jan de Nul and Boskalis built at yards like IHC en de Merwede shipyard
Most recent Dredger papers presented by MARIN
(complete overview of papers can be found under Publications)
(complete overview of papers can be found under Publications)
Downtime Analysis Techniques for Complex Offshore and Dredging Operations
van der Wal, Remmelt and de Boer, Gerrit, OMAE Conference, Vancouver, 2004
Considerations on the application of podded drive on dredgers
De Jager, A., Hoekstra, M., Bulten, N., 9th PRADS Symposium, Lübeck / Travemünde, sept. 2004, 2004
Downtime Analysis Methods for Offshore Dredging Operations
G.J. Grundlehner (Boskalis), R.J. van der Wal and G.J. de Boer(MARIN), CEDA Conference, Amsterdam, 2003
Prediction Downtime of Dredges Operating in the Open Sea
J.E.W. Wichers and E.J. Claessens, WEDA Conference, Rhode Island, 2000
van der Wal, Remmelt and de Boer, Gerrit, OMAE Conference, Vancouver, 2004
Considerations on the application of podded drive on dredgers
De Jager, A., Hoekstra, M., Bulten, N., 9th PRADS Symposium, Lübeck / Travemünde, sept. 2004, 2004
Downtime Analysis Methods for Offshore Dredging Operations
G.J. Grundlehner (Boskalis), R.J. van der Wal and G.J. de Boer(MARIN), CEDA Conference, Amsterdam, 2003
Prediction Downtime of Dredges Operating in the Open Sea
J.E.W. Wichers and E.J. Claessens, WEDA Conference, Rhode Island, 2000
Most recent Dredger articles written for MARIN Report
(complete overview of articles can be found under Publications)
(complete overview of articles can be found under Publications)
Project Team Simulator
Noël Bovens, 2005
EFFORT pays off
Hoyte Raven & Jan-Bart Verkuyl, MARIN Report, 2006
Noël Bovens, 2005
EFFORT pays off
Hoyte Raven & Jan-Bart Verkuyl, MARIN Report, 2006
Contact
For more information on how MARIN can help your organisation with Dredgers, please contact:
Advanced Vessel team at AdvancedVessel@marin.nl
For more information on how MARIN can help your organisation with Dredgers, please contact:
Advanced Vessel team at AdvancedVessel@marin.nl