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Maritime Engineering

Polaris Marine Group delivers end-to-end maritime engineering services to support the design, assessment, and delivery of marine infrastructure across Australia. We specialise in developing engineering solutions that perform in dynamic coastal and estuarine environments—whether for new construction, upgrades, or maintenance of essential maritime assets. Our maritime engineering services bring together technical rigour, practical experience, and a deep understanding of the marine environment. We work with government agencies, port authorities, asset owners, and marine contractors to solve complex challenges and support reliable long-term performance.

Project Summary

Key Achievements

Engineering That Understands the Water

Unlike general civil or structural engineering, maritime engineering requires specialist insight into the forces, constraints, and risks unique to working in and around water. Our engineers consider tidal variations, wave loading, vessel impact, sediment movement, and saltwater exposure in every design. We combine marine structural engineering with geotechnical, hydraulic, and environmental input to deliver solutions that are buildable, durable, and cost-effective. Our work spans ports and harbours, ferry terminals, coastal defences, berths, wharves, and associated infrastructure. Whether it’s designing a new jetty or planning the stabilisation of an ageing seawall, our approach ensures each asset is tailored to site-specific marine conditions and operational demands.

Core Maritime Engineering Capabilities

Polaris Marine Group provides a comprehensive suite of maritime engineering services, including: Concept and detailed design of marine structures Structural assessments and remediation plans Construction methodology and staging support Wave, current, and scour analysis Coastal erosion mitigation and revetment design Condition inspections and asset reporting Floating infrastructure engineering Pile design and driveability studies We work across greenfield and brownfield sites, delivering both new build and maintenance-focused services. Our team collaborates closely with environmental consultants, geotechnical engineers, naval architects, and regulators to ensure integrated solutions.

Jetty, Wharf, and Berth Engineering

Access infrastructure such as wharves, jetties, and berthing structures plays a critical role in maritime operations, and Polaris Marine Group has extensive experience in designing and assessing these assets. Our approach is grounded in a detailed understanding of vessel dynamics, environmental forces, and structural performance. Every design considers the unique conditions of the site—ranging from tidal movements and wave action to the specific vessel types the structure will service. We account for berthing loads, mooring demands, and operational forces such as those from cranes, vehicles, or cargo. Corrosion protection, pile selection, and maintenance access are also integrated into each solution, ensuring long-term asset resilience. Whether we’re delivering a new build or helping to upgrade an existing structure to meet modern safety and operational standards, our designs are both practical and robust.

Coastal Structures and Erosion Control

Working along the Australian coastline means dealing with constant change—erosion, shifting sands, and powerful swell conditions. Polaris Marine Group designs coastal protection solutions that manage these natural forces and preserve vital infrastructure. Our engineers develop seawalls, revetments, and breakwaters that are structurally sound, visually appropriate, and tailored to the energy of the surrounding environment. Where appropriate, we incorporate beach stabilisation strategies and soft engineering techniques to protect foreshore areas while maintaining environmental integrity. Each solution is developed with a long-term view, aiming to reduce maintenance needs and protect public and private assets from the impacts of coastal retreat and sea-level change.

Marine Structural Assessments and Remediation

With a large proportion of Australia’s marine infrastructure reaching maturity, asset owners are under increasing pressure to understand condition and plan proactive maintenance. Polaris Marine Group provides comprehensive structural assessments to determine remaining service life and identify potential risks. Our engineering team carries out detailed inspections above and below the waterline to assess material degradation, load capacity, foundation stability, and the impact of marine growth. Based on these findings, we prepare remediation plans that include scope of works, cost estimates, sequencing guidance, and support for procurement or contractor engagement. For clients who require it, we also provide ongoing support during the repair phase, helping ensure quality and compliance from start to finish.

Temporary Maritime Works and Staging

Many marine projects involve temporary works to support safe and efficient delivery. Polaris Marine Group engineers these temporary solutions with an understanding of construction logic, program constraints, and on-water safety. We design cofferdams, access platforms, and floating systems that enable complex marine works to be completed without compromising environmental or safety outcomes. Our temporary designs are efficient to install, easy to deconstruct, and resilient in the face of challenging marine conditions. Whether the job requires a floating work platform in a high-current environment or a temporary causeway in a tidal estuary, we ensure every structure is engineered with precision and practicality.

Integration With Marine Construction

What sets Polaris Marine Group apart is our seamless integration between maritime engineering and marine construction. Our engineers are embedded within the same team that delivers the on-water works, meaning design and construction are aligned from day one. This results in faster design responses, clearer communication, and fewer surprises during delivery. Our engineering team works hand-in-hand with site crews, allowing us to refine designs based on practical feedback and real-time conditions. We also collaborate with external contractors who need specialised maritime engineering support but want the flexibility to manage their own site operations. This flexibility ensures we can scale and adapt to any project size or complexity.

PROJECTS

SEE US IN ACTION

Manton Dam

Polaris Marine Constructions were engaged by Exact Contracting to provide a modular crane barge service at the Dam wall at Manton Dam to deliver the replacement of internal valving and upgrades to the infrastructure of the Intake tower.

Nelligen Bridge Marine Support and Demolition Contract

Polaris Marine Group played a key role in the Nelligen Bridge project, providing overwater support for construction before demolishing the 7-span, 5,000-tonne bridge. The in-house demolition was incident-free, using a suspended work deck with geotextile and drainage to capture debris. Materials were processed on-site and recycled. This project highlighted Polaris Marine’s expertise in complex marine demolition within sensitive waterways.

Seabed Services Pipe Line Deployment

Deploy 3 service pipe lines on the sea floor between Garden Island and Fort Dennison and cover with precast grout mattresses.

Fort Denison – Ferry Wharf

This project included wharf demolition, sea wall remediation, pile installation, concrete works, and the installation of a new pontoon with electrical connections.

Circular Quay – Western Promenade – Soffit Concrete Repairs

This project involved concrete remediation works, including hydro-blasting, shotcrete application, bar reinforcement, protective coatings, and concrete cutting, with site set-up, exclusion zones, and sound curtain installation to ensure safety and minimal disruption.

Manly Boat Shed – Pontoon & Jetty Replacement

This project involved constructing a pontoon, gangway, and timber jetty, including piling, demolition, and electrical connections, to deliver a durable marine access solution.
SEE MORE POLARIS PROJECTS

TESTIMONIALS

HEAR FROM SOME
OF OUR CLIENTS

★★★★★ 5/5
“Polaris are awesome to work with, they make landscaping jobs with tricky access a breeze.”

Johnny L - Distinct Landscapes

★★★★★ 5/5
“The attention to detail provided by PMC during the project could not be faulted. Execution, safety, onsite management and the finished product were at a very high standard. Communication throughout the project from PMC Supervisors and Project Manager were regular and accurate. This enabled Thales to understand daily activities, problems and overall progression at every stage. Ultimately, the professionalism shown by PMC through all aspects of the project, enabled for a successful end product to the Commonwealth. I can’t thank Dane and the PMC team enough for the way the project was ran, start to finish.”

Jake Duncombe, Project Manager

★★★★★ 5/5
“Polaris were an exceptional contractor to work with throughout this project. They were fluent in communication, timely, reliable, nailed the quality of work and went out of their way to be flexible with Thales needs. They have a positive and healthy working relationship with Thales.”

Owen Gardner, Project Manager

★★★★★ 5/5
“I have had the pleasure of working with Polaris for the last couple of years, particularly with transporting vehicles for events, deliveries, and contractors. Their Team is professional and reliable, from their Operational Team, Cookie & Jay, to their Skippers and deckhands are incredibly efficient, even under tight event schedules. What really stands out is their attention to detail and commitment to customer satisfaction. Such as accommodating last-minute changes, they always go the extra mile to make sure everything runs smoothly, giving us peace of mind. Over the years we have built a great relationship/partnership with Polaris and we look forward to continuing to work with them for years to come.”

Keighley O, Sydney Harbour Trust

GET IN CONTACT

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

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

[email protected]

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Gate 2, James Craig Rd, Rozelle NSW 2039
[email protected]
Phone: +61 2 9563 8333
Emergency Phone +61 (0) 418 231 916
CERTIFICATION
BIMCO Certified
Certifications