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COMMERCIAL DIVING SOLUTIONS

Certified commercial diving services across Australia for inspections, repairs, salvage, and marine construction. Safe, efficient underwater operations by Polaris Marine Group.
Polaris Marine Group provides expert commercial diving services to support marine construction, underwater maintenance, salvage operations, and environmental projects throughout Australia. With decades of hands-on marine industry experience, our divers are trusted by engineers, government bodies, construction firms, and asset owners to carry out complex underwater work safely, reliably, and efficiently. Our commercial diving team is fully qualified, experienced, and equipped to work in a wide variety of environments including ports, harbours, bridges, marinas, water tanks, and confined spaces. Whether the job involves underwater welding, structural inspections, or recovery operations, our focus is always on safety, clarity of communication, and professional delivery.

Project Summary

Key Achievements

Qualified Divers. Professional Results.

Each of our commercial divers is trained to the highest industry standard under the Australian Diver Accreditation Scheme (ADAS), with additional qualifications in areas such as confined space entry, rigging, rope access, and underwater welding. Beyond their technical skills, our divers bring years of practical experience in dynamic, high-risk marine environments. They work as part of highly coordinated teams supported by dedicated surface crews, advanced dive communications, and fully compliant safety systems. At Polaris Marine Group, we understand that commercial diving projects can present logistical and environmental challenges. We respond with meticulous planning and a commitment to doing the job right, especially when conditions are tough or timelines are tight.

Underwater Inspection Services

Underwater inspections are critical for infrastructure assessment, maintenance scheduling, compliance verification, and asset management. Polaris Marine Group offers diver-led inspections of wharf structures, seawalls, bridge footings, piles, conduits, hulls, and submerged mechanical components. These inspections are delivered with full visual documentation, including high-resolution imagery and video where visibility allows, as well as clear, timely reports. Our reports identify defects, note structural conditions, and offer practical repair or remediation recommendations. For clients needing to assess underwater conditions before major works or in response to suspected damage, our inspections provide the clarity required to make informed decisions.

Marine Construction and Repairs

Many marine construction and repair projects demand skilled divers who can operate effectively below the surface. Polaris Marine Group regularly undertakes complex underwater construction tasks such as pile remediation, anode installation, cathodic protection, and underwater grouting. Our team works alongside project engineers and construction managers to ensure diving operations align with broader project timelines and standards. Our ability to adapt to real-time changes in underwater conditions—such as limited visibility, current, or tidal movement—means we maintain control and safety throughout the entire job. Each underwater construction project is planned and executed with attention to detail, using the right tools, techniques, and environmental precautions.

Vessel Maintenance and Propeller Clearance

For commercial vessels, tugs, and ferries, Polaris Marine Group provides prompt, mobile dive services to manage issues like fouled propellers, hull growth, and underwater damage. Our divers can clear lines and debris, inspect hulls, and assist with basic underwater cleaning and maintenance to help vessels return to service without the delay and cost of dry-docking. Where necessary, we provide video evidence to confirm conditions before and after clearance work is performed. These services are critical to maintaining operational schedules for commercial and government vessels, and our response times are structured to minimise downtime.

Marine Salvage and Recovery Diving

From retrieving sunken vessels to recovering equipment, Polaris Marine Group conducts safe, efficient salvage and recovery diving across a variety of marine environments. Every salvage job is unique, requiring careful planning and risk management to ensure safety and minimal disruption to surrounding infrastructure or ecosystems. Our salvage capabilities range from locating and lifting small boats and pontoons to recovering anchors, moorings, or equipment lost during transport or construction. With the right combination of divers, lift equipment, and surface support, we’re able to complete recoveries in both high-traffic areas and remote or restricted-access waterways.

Environmental Diving Services

Environmental management is a growing priority for public and private marine operators. Polaris Marine Group assists environmental consultants, marine scientists, and government agencies with diving services for ecological surveys, seabed sampling, sensor installations, and habitat restoration work. Our divers are trained to work delicately and precisely in sensitive marine environments. We’ve supported projects involving the installation of artificial reefs, transplanting of seagrass, deployment of monitoring instruments, and removal of debris in protected waters. These projects are carried out in strict accordance with environmental regulations, with a focus on minimising disturbance and delivering high-quality data and outcomes.

Confined Space and Tank Diving

Not all commercial diving happens in open water. Polaris Marine Group also provides diving services in tanks, culverts, water reservoirs, ballast tanks, and other confined or enclosed environments. These jobs present their own unique hazards, and our team brings the right combination of training, confined-space certification, and equipment to manage them safely and efficiently. In these environments, our divers conduct inspections, perform maintenance tasks, and remove debris or obstructions that can affect water flow, storage, or safety. These services are often essential for local councils, utilities, and industrial asset owners.

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