Capital Dredging

Canal Entrance and Sand Trap Dredging (Port Geographe, WA)

Canal Entrance and Sand Trap Dredging (Port Geographe, WA)
Location: Port Geographe, Western Australia

We have dredged approximately 70,000m3 of sand, silt and sea grass from the canal entrance and sand trap area, in various contracts, over the past 8 years...(click on picture for more info)

Dawesville Channel, WA

Dawesville Channel, WA
Location: Dawesville, Western Australia

This project was challenging as it involved dredging of sand, rock and marine mud including acid sulphate soils. Later, after the channel opening, strong tidal currents also increased the challenge...(click on picture for more info)

Herdsman Business Park, WA

Herdsman Business Park, WA
Client: Herdsman Business Park
Location: Herdsman Lake, Osborne Park, Western Australia
Completion Date: 1982

This project was extremely challenging as apart from the dredging, it involved complex dewatering and materials handling including separation techniques...(click on picture for more info)

Floreat Waters; A Herdsman Lake Residential Development, WA

Floreat Waters; A Herdsman Lake Residential Development, WA
Location: Herdsman Lake, WA
Completion Date: 1979

750,000m3 was dredged from Herdsman Lake as part of the overall project completed by this company....(click on picture for more details)

 

Australian Marine Complex, WA

Australian Marine Complex, WA
Location: Henderson, WA

6000m3 sand and hard limestone rock (28MPa) was dredged with new dredging technologies...(click on picture for more info)

 

Exmouth Boat Harbour, WA

Location: Exmouth, WA

We removed approximately 55,000 m3 of hard coral material to create the 500 metre long entrance channel. We also undertook clean-up dredging, as part of a Thiess consortium which constructed the harbour after the original contractor failed early in his effort and went broke.

A later campaign included the removal of silts washed into the harbour during a 1:100 year flood event. This involved dredging between piles and around cyclone moorings.

Yet another project involved removal of silt buildup from the harbour entrance and also leveling the rock floor of canals after failures occurred in another contractors levels while he was constructing the canals in difficult conditions.

Hillary's Boat Harbour, WA

We were both the developers and the contractor for the whole development.

This very large project involved peat stripping and filling the area by dredging approximately 2.0 million m3 of sand and 1.4 million m3 of peat. Thirty hectares of shallow lakes were created by dredging. Up to 9 meters of peat depth stripped, which included substantial de-watering and earthworks.

Our own earthmoving equipment was used, including all-terrain 6WD dump trucks, swamp dozers, swamp excavator, grader and loaders. Substantial solar drying techniques were employed. Difficult typhus reed removal was conducted by dredging, difficult engineering adaptation of dredges and dewatering plant to suit the extreme physical constraints and conditions in this 220 ha swamp site.

Dredging was a 24hr x 6 day operation. We also put in the services and roads with the assistance of subcontractors.
 

Jurien Bay Small Boat Harbour, WA

Location: Jurien Bay, WA

We were the construction contractors. We dredged and dry excavated 520,000m3 sand to form the entrance channel and basin area to build this harbour. We produced, carted and placed limestone for revetments and for training groynes.

Esperance Small Boat Harbour, WA

Location: Esperance, WA

We were the construction contractors. We dredged and dry excavated 510,000m3 sand to form the entrance channel and basin area. We produced, carted and placed granite rock for revetment and for training groynes. We also dredged approximately 30,000 metres of limestone reef from the entrance channel.

Carnarvon Fascine, WA

Location: Carnarvon, WA

We completed the initial dredging of the Town Fascine in 1981 whereby open water was created in front of the town and some 250,000m3 was displaced to close and fill the south arm of the Gascoyne River for sub-divisional land use...

Carnarvon Harbour and Channel, WA

Location: Carnarvon, WA

We dredged approximately 100,000m3 of sand and silt from the harbour entrance and extended the harbour basin. We dredged along approximately 2.5 km of channels. Included were pumping distances of 1.8 km through a booster including 1.4 km of submerged line. 

Ascot Waters Residential Development, WA

We dredged approximately 40,000m3 of Swan River marsh material to create both the North and South Entrance channels to the Marina from the River.

Albany Port Authority, WA

Albany Port Authority, WA

We dredged approximately 27,500m3 of material for the Albany Pilot Service Vessel Facility whilst it was being constructed by John Holland Group.

Removal of Sea Bund Wall, Wandoo Alliance (Bunbury, WA)

We assisted Leighton Contractors in the dredging removal of a sea bund wall, prior to the tow out of the Concrete Gravity Structure. (We were called in to assist following another contractor having performance issues).

Residential Development, Port Geographe WA

The removal of approximately 20,000m3 of material from the entrance channel area while the groynes were still being built.

In 2014 we dredged the footings for the groyne realignment and constructed the new entrance channel. We also undertook the sand and weed bypassing and re-configured the beach alignment to the east and west.