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Dongfang CSD-250/10 inch Cutter Suction Dredger
Keywords:

A cutter suction dredger is a stationary or self-propelled vessel that uses a rotating cutter head to loosen the material in the bed (‘cutting’).

 

A suction inlet located beneath the cutter head (known as the suction mouth) is connected by a suction tube directly to one or more centrifugal pumps. The vacuum force at the suction inlet sucks up the loosened material. The suction tube and cutter head are attached to a ladder. The ladder with cutter head is positioned at the fore of the vessel.

 

On the aft side, the cutter generally has two spud poles. One spud pole (the auxiliary spud) passes straight through the vessel, while the other is mounted on a movable spud carriage, which can be moved lengthwise along the vessel or pontoon. Steel cables are used to move the ladder or cutter head back and forth, with the spud in the spud carriage as the centre of each concentric circle that it describes. Moving the spud carriage causes the cutter suction dredger to move as well (‘stepping’). The cutter suction dredger discharges the dredged material directly to shore via a floating pipeline or into a barge with a special loading system.


Dongfang CSD-250 Cutter Suction Dredger

Item

Parameter

Notes

Length Overall

25m

 

Hull Length

18m

 

Hull Width

5.4m

 

Hull Depth

1.6m

 

Max.Dredging Depth

12m

 

Max.Discharge Distance

1000m

 

Mean Draft

1m

 

Pump Manufacturer

12/10

SHIJIAZHUANG

Drive Mode

212kw

Gearbox

Water Flow

1200m3/hr

 

Solid Output

180-250m3/hr

 

Main Engine Power

540kw@1500rpm

Cummins/Weichai

Oil Consumption

91.96L/hr

 

Cutter Head

90kw@0-35rpm

Crown Type

Winch

Ladder/side winch

3 pieces

Spud

Φ377mm@14m

2 pieces