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Repeat African Order for De Groot Nijkerk
01 Jun 2003
The Netherlands' De Groot Nijkerk has received a repeat order from an African client for a dismountable cutter suction dredger specially designed to tackle annual siltation problems in inland waterways. These are in fact irrigation channels which silt up during the rainy season, threatening vitally important crops of sugar cane, sorghum, cotton and wheat.
The monohull CSD will be built to customer specifications within five months and will be road transportable with a supplied bespoke trailer. The 13m LOA dredger will be operated by one man from an open, detachable control stand and will remove silt from a depth range of 0.75m to 5m. In order to vary the cutting angle at those depths, the cutter ladder is provided with a mechanical cutter angle adjustment. A mechanical suction depth indicator and an echo sounder will be supplied to survey the irrigation channels.
The Grotius dredgepump will be driven by a 129 kW Cummins diesel engine and will discharge through a 200 mm diameter pipeline. The ladder is operated by a hydraulic cylinder and the vessel moves by operating five hydraulically driven winches.
The flexibility of the dredger is enhanced by its tandem trailer.
No crane is needed to hoist the dredger out of irrigation channels, a slope on the embankment is sufficient to lower the trailer and fix the dredger onto it. A floating pipeline, a short pipeline, anchors and a workboat are also being supplied with this dredger.
MJ Information No: 18335
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