Defence
Home »
Sovereign Underwater Sustainment for the Royal Australian Navy
As Australia’s sovereign underwater service provider and a member of the Defence Industry Security Program (DISP), Franmarine delivers comprehensive underwater sustainment capability to the Royal Australian Navy and allied forces.
With a team that includes a high number of experienced veterans within Franmarine, we are trusted by Defence to maintain seaworthiness, marine biosecurity compliance and optimise fleet performance across the region and extend critical support to allied forces.

Technology Advantage
Franmarine’s MarineStream™ platform brings real-time oversight, traceability, and compliance assurance to naval operations. Combined with our diver and ROV teams, it ensures the right mix of human skill and advanced technology is applied in every scenario.
OUR UNDERWATER SUSTAINMENT SERVICES INCLUDE:
Life-Cycle Underwater Sustainment
Franmarine provides comprehensive life-cycle underwater sustainment, integrating consolidated biofouling management and underwater engineering to support the ongoing readiness of Defence and Industry fleets. Our team delivers end-to-end support including docking support and mooring services, alongside rapid emergency response capabilities such as salvage, rescue and recovery to ensure operational continuity in any environment.
Biofouling Management
Our biofouling management capability offers a full suite of environmentally responsible solutions, including tailored biofouling management programs, in-water hull cleaning, niche area cleaning, and invasive marine species treatment. These services are designed to improve vessel performance, support regulatory compliance, and protect Australia’s marine environments.
Underwater Engineering & Repair
Franmarine delivers advanced underwater engineering and repair solutions for Defence and commercial vessels, including battle damage repair, propeller strut and stern tube bearing replacements, propeller repair, polishing and thruster maintenance. Our capability extends to structural preservation work and fender repairs, ensuring vessels remain operational, safe, and ready for deployment.
Inspection, Survey & ROV Intervention
We provide high-accuracy underwater inspection services, including full survey for Class, supported by advanced non-destructive testing (NDT) and specialised ROV intervention for inspection, cleaning and Class survey tasks. This integrated inspection capability enables fast, reliable assessment of asset condition while reducing downtime and improving maintenance planning.
Trusted by Defence. Ready to serve.
Contact Franmarine for sovereign underwater sustainment solutions that keep naval assets mission-ready
Why Work with Us

Proven Experience
With over four decades of service and a leadership team that brings more than 250 years of combined expertise, Franmarine has earned a reputation for reliability and results across Defence, shipping, infrastructure, and resource industries.
End-to-End Capability
From inspection and biofouling management to underwater engineering, salvage, and moorings, Franmarine is the only Australian provider offering a genuine turnkey solution for lifecycle underwater asset management.
Innovative Technology
We integrate advanced solutions such as MarineStream™ and environmentally compliant in-water cleaning systems, ensuring clients benefit from transparency, efficiency, and compliance with the world’s highest standards.
Commitment to Safety & Environment
Certified to ISO 9001, ISO 14001, and ISO 45001, we operate with uncompromising standards in health, safety, and environmental care—delivering outcomes that protect people, assets, and the marine environment.















