"Cooper II" Dredge Specifications

Hull Size 22 meters long by 6.2m beam.
Displacement 82 tonnes.
Digging Depth Standard 10m. Up to 14 meters with extensions in place.
Power Cummins 19L 448kW Marine Diesel.
Aux Power Cummins 10L diesel 205kW continuous.
Pump GIW 14/12 Dredge pump.
Ladder Pump G.I.W. 14/12 dredge pump hydraulically driven and sealed for underwater operation.
Pipeline 350mm (14”) diameter discharge diameter.
Controls Electric and mechanical.
Survey In survey Department of Transport to 2C.
Cutter Hydraulic cutter 120kw in bucket wheel, reverse wheel or crown head options. Replaceable cutting edges and teeth. Rock, sand and weed tolerant heads optional. Power is upgradeable.
Anchor Booms Fitted. The dredge sets its own anchors where required.
Spud System Fitted. Main spud travels hydraulically (2.8 metres). Modern lifting and quick drop mechanisms.
Stern Winch Optional stern winch with swell compensator. For optional all wire operation where spuds cannot be used.
Engine Room Houses power plant and controls. Fully enclosed with fan for ventilation. Insulated for fire and noise. Water cooled exhaust systems combines with engine room sound proofing and hydraulic ventilation to provide quiet operation.
Electrical 12V DC, 24V DC, and 240V AC is available on board. Circuit breakers and earth leakage protection is fitted.
Lighting 3000 watts external LED lighting floods are fitted. All lighting is LED.
Flow measure A magnetic flow measurement device is fitted.


Trailer The dredge is transported on a specifically designed road trailer. This is designed to meet road transport regulation, but also to keep the dredge in one piece, thereby saving on mobilization time and cost. Reliability is also enhanced when hydraulic, electrical and other connections are not disrupted. The dredge is however fully demountable if a project should require this. The trailer is designed to act as a slipway for the dredge to place it in and out of the water. Hydraulic jacking legs provide for angling and a large hydraulic winch pulls the dredge on or off the trailer.
Workshop A sea container has been converted into a mobile workshop and spare parts storage facility for use on site.
Re-fuelling We have full re-fuelling facilities for use at site. This includes sea containerized 10,000 litre tanks with meter, pump, hose, safety hand piece and sealed safety cell catchment for the entire contents. We also have 1000 litre transfer tanks to go on the IT Loader forks and also built in transfer tanks in the workboats.
IT Loaders A Caterpillar IT930 loader with fork, crane and bucket attachments is included for use as a support machine.
Vehicles One tonne 4WD tray back utilities are provided as site vehicles and for personal transport.
Pipeline 350mm dia floating lines and steel and poly pipelines are included.
Anchors Danforth/ CGC modified anchors for dredge and floating line.
Workboat 28 foot steel hulled "Aquarius" is in survey to Department of Transport Department. It is powered by 280hp Volvo Penta Marine diesel engine. The single propeller is of large diameter and lean pitch for pulling power. Draft is 1.2 metres. Displacement is 7 tonnes. Fitted is a fendering system and central Samson bollard.
  We also have a spare aluminum workboat ‘Ali 1’ with twin 60hp Yamaha commercial outboards. We use this when the working ability of the Hedland II isn’t required or alternatively as a crew transporter.
Booster Pumps Diesel powered portable booster pump stations with Warman pumps are optional. All three of our boosters are optional but BP05 is best suited to this dredge.