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Dongfang CSD-300/12 inch Cutter Suction Dredger
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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-300 Cutter Suction Dredger

Item

Parameter

Notes

Length Overall

35m

 

Hull Length

19m

 

Hull Width

6m

 

Hull Depth

1.8m

 

Max.Dredging Depth

13m

 

Max.Discharge Distance

1000m

 

Mean Draft

1.2m

 

Pump Manufacturer

14/12

SHIJIAZHUANG

Drive Mode

400kw

Gearbox

Water Flow

2000m3/hr

 

Solid Output

300-500m3/hr

 

Main Engine Power

720kw@1500rpm

Cummins/Weichai

Oil Consumption

161.3L/hr

 

Cutter Head

120kw@0-35rpm

Crown Type

Winch

Ladder/side winch

3 pieces

Spud

Φ450mm@16m

2 pieces