DREDGING

Polaris Marine have dredging capability for small to medium size projects using our state-of-the-art DAMEN dredging equipment, as well as multi-discipline platforms for port seabed levelling, including sweep bar and excavator mounted units from 1,000m3 per day.

At Polaris Marine Group, we deliver specialist dredging solutions to support maritime infrastructure, coastal engineering, and maintenance projects across Australia’s east coast. With over 35 years of experience in marine construction and operations, our in-house team provides safe, reliable, and cost-effective dredging outcomes, on time and within spec.

End-to-End Dredging Capability

Polaris Marine Group provides a full-service dredging solution, covering every stage from site inspection and hydrographic survey to project planning, permits, dredge execution, and spoil relocation. Our in-house fleet includes: Cutter suction dredgers Water injection dredgers Workboats and multicats Hopper and barge support vessels Land-based excavators and amphibious equipment We tailor each dredging methodology to suit the site conditions, sediment type, environmental restrictions, and desired final depths. This approach minimises disruption, reduces compliance risk, and ensures a better long-term outcome for our clients and their stakeholders.

Maintenance Dredging

Ongoing sedimentation is a challenge for ports, harbours, rivers, and marina operators. Our maintenance dredging services keep access channels, berth pockets, and fairways clear, ensuring vessels can operate safely and without interruption. We work with port authorities, government agencies, and private developers to schedule and deliver regular maintenance dredging programs. Where possible, we use low-impact methods like water injection dredging, particularly in environmentally sensitive zones or high-traffic areas.

Capital Dredging

Capital dredging supports large-scale infrastructure development, including the creation of new ports, marina basins, or land reclamation works. These projects require detailed planning, environmental approvals, and expert execution, often in close proximity to critical marine assets or urban environments. Polaris Marine Group delivers capital dredging services backed by proven project delivery systems, including: Environmental Management Plans (EMP) Sediment transport and turbidity modelling Site-specific methodologies High-accuracy survey and monitoring Spoil relocation, dewatering, and site rehabilitation We’re equipped to handle both small-scale capital works and complex multi-phase dredging campaigns as part of broader marine construction projects.

Environmental Dredging

In areas where contamination or environmental sensitivity is a concern, dredging requires a highly controlled, precise approach. Polaris Marine Group has delivered a range of environmental dredging projects, with capabilities including: Low-turbidity dredging methods Confined and lined spoil management Silt curtain deployment and compliance monitoring Working within protected areas or near sensitive habitats We also manage the remediation of legacy infrastructure sites, supporting local councils and developers with the removal of contaminated sediments and restoration of waterways.

Dredging Project Planning and Permitting

Effective dredging begins well before equipment hits the water. At Polaris Marine Group, we provide strategic input during the planning and approvals phase, helping our clients navigate environmental legislation, permit conditions, and community engagement with confidence. Our team works closely with regulators, consultants, and project managers to develop tailored methodologies that meet approval requirements while staying practical and cost-effective. We help identify risks early and build mitigation strategies into the project design, reducing surprises during execution. From feasibility reviews and stakeholder consultation to sediment analysis and EMP submissions, our early-stage involvement ensures that by the time we mobilise, your dredging project is positioned for success, both in terms of compliance and operational performance.

Supporting Infrastructure and Equipment

As a multi-disciplinary marine contractor, Polaris Marine Group offers more than just dredging. We supply the marine assets, operational crews, and support systems needed to execute projects with minimal reliance on third parties. This includes marine piling and temporary works, scour protection, floating plant, hydrographic surveys, and marine towage logistics. By integrating dredging with other marine construction activities, we reduce downtime, streamline project delivery, and ensure better coordination across the board.

Project Experience

Our dredging team has successfully completed campaigns across New South Wales, Queensland, and beyond. Projects have ranged from small-scale river clearance to major capital works as part of infrastructure upgrades. Notable campaigns include berth maintenance dredging for commercial ports, capital dredging for marina expansions, and sediment relocation using water injection techniques in sensitive environments. We’ve also delivered contaminated material removal under strict EPA controls and carried out navigation clearance for regional councils. Each project is supported by our in-house team of marine professionals, environmental consultants, and marine logistics coordinators, ensuring every campaign meets operational, safety, and compliance targets.

Why Choose Polaris Marine Group?

We’re not just a dredging contractor, we’re a marine partner with the depth of knowledge and breadth of capability to support the full lifecycle of maritime projects. Our difference lies in our in-house fleet and crews, eliminating delays and the need for outsourcing. We bring an environmental focus to every campaign, delivering methods that not only meet but exceed approval requirements. With full operational control, we manage marine, piling, dredging and logistics as one team—streamlining decision-making and delivery. Our experience spans everything from regional council works to Tier 1 civil infrastructure programs, and with depots in Sydney, Newcastle and Brisbane, we’re able to mobilise quickly along the east coast. When you work with Polaris Marine Group, you’re choosing a team that knows the water, the risks, the gear, and how to make complex marine works run smoothly.

PROJECTS

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If you need to tow it, show it, build it, push it, deliver it, lift it or salvage it over water; please complete this form and one of our team will be in touch.

Gate 2, James Craig Rd, Rozelle NSW 2039

Phone: +61 2 9563 8333
Emergency Phone: +61 (0) 418 231 916

[email protected]

DREDGING

End-to-End Dredging Capability

Maintenance Dredging

Capital Dredging

Environmental Dredging​

Dredging Project Planning and Permitting

Supporting Infrastructure and Equipment

Project Experience

Why Choose Polaris Marine Group?​

PROJECTS

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Manton Dam

Nelligen Bridge Marine Support and Demolition Contract

Seabed Services Pipe Line Deployment

Fort Denison – Ferry Wharf

Circular Quay – Western Promenade – Soffit Concrete Repairs

Manly Boat Shed – Pontoon & Jetty Replacement

TESTIMONIALS

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Johnny L - Distinct Landscapes

Jake Duncombe, Project Manager

Owen Gardner, Project Manager

Keighley O, Sydney Harbour Trust

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Environmental Dredging

Why Choose Polaris Marine Group?

HEAR FROM SOME
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