The Art of Dredging

Dredging and shipping


In relation with a previous article on hoppernozzle engineering, I publish here a Powerpoint presentation on observations onboard "Gerardus Mercator",  2002, on the use and layout of hoppernozzles, in a -succesful- attempt to reduce restload.

Some idea's are obsolete, but the presentation gives a good impression what goes on in the hopper during discharge; "a symphony of water and sand".

Furthermore, "Gerardus" was equipped with doors, to allow the sand-water mixture into the selfemptying channels.

Hopperdredgers nowadays are mostly designed with a system of suction bends and valves, with other problems and opportunities.


 "Dossier Hoppersproeiers"     (downloadable pdf, 3 Mb)


Marc Van de Velde


Subscribe to our newsletter:

Write us: (at)

Manu's scripts

- a sailor's fifth column


Oops! This site has expired.

If you are the site owner, please renew your premium subscription or contact support.