Geotechnical drilling, dredging and spoil management
Marine Drilling & Dredging
We mobilise barge-mounted drilling and dredging plant for marinas, ports, canals, river frontages and private waterfronts. Work covers geotechnical and pile-hole drilling, capital and maintenance dredging, berth-box deepening, siltation and weed removal, and licensed spoil handling — with survey, environmental controls and permit support built into the scope.
Survey-backed
Pre & post dredge
Licensed
Spoil handling & disposal
Australia-wide
Plant mobilisation
Overview
Dredging and marine drilling live or die on approvals and volumes. We survey first, quantify the cubic metres properly, then choose plant that suits the site rather than whatever is on the yard.
Environmental controls — silt curtains, turbidity monitoring, dewatering and licensed disposal — are built into the scope, and we prepare the documentation your council, port authority or state agency needs to approve the work.
Material classification drives most of the cost. We sample and classify before mobilisation so sand, silt, clay, rock and any contaminated fraction are priced and disposed of correctly, rather than discovered halfway through the campaign.
Marine construction sits alongside the dredging fleet: pile driving and extraction, pontoon and gangway installation, seawall and revetment repair, mooring and screw-anchor installation, boat-ramp reconstruction and demolition of failed structures. One contractor, one program, one set of approvals.
What's included
- Barge-mounted geotechnical and pile-hole drilling
- Cutter-suction, excavator and airlift dredging
- Pre- and post-dredge hydrographic survey
- Silt curtains and environmental controls
- Spoil dewatering, cartage and licensed disposal
- Permit and approval documentation support
Typical jobs
- Marina berth-box and channel maintenance dredging
- Boat ramp, canal and river-mouth siltation removal
- Geotechnical investigation for wharf and pile design
- Capital works deepening for new berths
Every engagement is scoped and quoted individually. Send us the details and we'll come back with a written quotation.
How the engagement runs
Our process
- 01
Hydrographic survey
Pre-dredge survey establishes existing bed levels and true volumes.
- 02
Approvals support
Permit documentation, REF input and environmental management plans prepared.
- 03
Plant selection
Cutter-suction, excavator, airlift or drilling rig matched to site access and material.
- 04
Execution
Works run with silt curtains, turbidity monitoring and daily production records.
- 05
Post-dredge survey
Verification survey and volume reconciliation issued with disposal dockets.
Capability
What we field
Plant fielded
- Cutter-suction dredgers with floating HDPE pipeline
- Long-reach and amphibious excavators on pontoons
- Airlift and submersible pump systems for confined berths
- Barge-mounted geotechnical and pile-hole drilling rigs
- Spud barges, work boats and dewatering plant
- Split-hopper barges and material scows for offshore placement
- Silt curtains, turbidity loggers and geotextile dewatering bags
Typical works
- Berth box and channel maintenance dredging
- Boat ramp, canal and river-mouth siltation removal
- Capital deepening for new berths
- Geotechnical investigation for wharf and pile design
- Weed, debris and legacy structure removal
Marine construction
- Pile driving, extraction, splicing and remediation
- Pontoon, finger and gangway supply and installation
- Seawall, revetment and rock-armour repair
- Mooring, screw-anchor and swing-mooring installation
- Boat ramp reconstruction and structural demolition
Environmental controls
- Sediment sampling and NAGD material classification
- Silt curtain deployment and turbidity monitoring to licence limits
- Dewatering, settlement ponds and geotextile bag drying
- Acid sulfate soil management and treatment
- Marine fauna observation and exclusion protocols
Deliverables
What you receive
- Pre- and post-dredge hydrographic survey
- Volume reconciliation and daily production records
- Environmental management and turbidity monitoring records
- Licensed spoil disposal dockets
- Approval and permit documentation support
- Sediment sampling and material classification report
- Dredge management plan, SWMS and site safety documentation
- As-built bed levels and design-depth compliance drawings
- Geotechnical borelogs and pile-design recommendations where drilling is in scope
Coverage
Sydney Harbour, Pittwater, Broken Bay, the Georges River and Botany Bay are our home waters, and we mobilise crews and plant to marinas, ports, councils and private waterfronts anywhere in Australia — including regional NSW, QLD, VIC, SA, WA, TAS and the NT.
Enquire
Request a dredging or drilling quote
Send the location, approximate volumes and any survey data — we will scope the plant and approvals.
- Response time
- Within one business day, seven days a week.
- Direct contact
- sean@sydneymarinelogistics.com.au
- Coverage
- Australia-wide mobilisation.
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