Our Marine Services

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Jetty Construction & Repairs

From new jetty construction to structural repairs and refurbishments, we build and restore safe, reliable access points that are designed to perform in demanding marine environments.

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Sea Wall Construction & Maintenance

We construct and maintain sea walls that protect waterfront assets from erosion and tidal movement, helping secure properties, marinas and commercial sites.

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Pontoons & Gangways

Our pontoon and gangway services include new installations, upgrades and repairs, delivering stable and practical water access for residential and commercial waterfront properties.

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Marine & Coastal Rehabilitation

We carry out marine rehabilitation works, including revetments, groynes and breakwaters, supporting shoreline stability and long-term coastal management.

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Marine Pile Driving

Marine pile driving forms the backbone of many waterfront structures, providing strong, dependable foundations for jetties, pontoons and sea walls.

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Wharf Repairs

Wharf repairs address structural damage caused by tides, vessel activity and environmental exposure. Repair work stabilises piles, replaces damaged decking and restores reliable access to marine infrastructure.

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Emergency Flood Works

Emergency flood works provide rapid response to flood damage, including debris removal, structure stabilisation and recovery of displaced vessels, helping restore safe access to waterways and affected waterfront areas.

Complete Marine Construction Services

At M&J Marine Services, we provide professional marine construction across New South Wales, supporting waterfront property owners, marina managers, developers and government clients with practical, long-lasting solutions. Based in Medowie and working across Newcastle, Coffs Harbour, Lake Macquarie, Forster and Port Stephens, we handle everything from jetty construction and repairs to sea wall construction and maintenance, pontoons and marine pile driving.


Our team also delivers commercial marine projects, marine and coastal rehabilitation works and marine salvaging. Since 2018, we have built a reputation for dependable workmanship and clear communication, focusing on structures that are designed for real coastal conditions. Whether you are upgrading ageing infrastructure, planning a new waterfront development or preparing a submission for a government tender, we bring the experience and capability to get the job done safely and efficiently. Call 0457 425 260 to discuss your marine project with our team.

Construction Workers Stand in Front of A Turquoise Excavator on A Construction Site — M&J Marine Services in Medowie, NSW