Thursday, October 6, 2011

Trailing Suction Hopper Dredger?

Is it a hopping dredger or is it named after its inventor?

No, it is a swimming dredger used to excavate easily removable sediments such as sand. The self-driven cargo hold suction dredger removes solid material from the bottom of waters through trailing heads and pumps it into the hopper tanks in the ship through a suction pipe. Among others, the hopper dredger is used to deepen ship channels.

The biggest hopper dredger so far is the Vasco da Gama, built in 2000. It was also used for the construction of the Palm Islands of Dubai.

Image source: Wikimedia "Crestway"

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