When defence analysts discuss AUKUS, the trilateral security pact between Australia, the U.S., and the U.K., they often focus on the nuclear-powered attack submarine (SSN-AUKUS) platform. But the real challenge isn’t steel, uranium or zirconium for that matter. It’s the human capital required to operate, maintain, and eventually build these systems safely.
More specifically, it is the on-shore sovereign capability in terms of human capital that lends the confidence to our partners that highly sophisticated, highly sensitive systems will be utilised and deployed as they should.
AUKUS represents one of the most complex systems-engineering collaborations in history. The exact number of parts in a modern nuclear submarine is of course classified, but it is safe to say that it is in the several millions. Success in operating such complex technological assets depends heavily on developing a skilled, future-ready workforce, capable of sustaining nuclear propulsion, advanced materials, and precision manufacturing. Without this, the alliance risks delays, cost overruns, or compromised safety standards.
The submarine clock is ticking
When Australia takes delivery of its first nuclear-powered submarines from the United States, the nation must be able to operate the nuclear reactors independently, transition periods notwithstanding. The problem is urgent – these skills cannot simply be imported, and countries worldwide are grappling with shortages of qualified nuclear engineers, reactor materials specialists, and propulsion experts.
Australia also aims to deliver its first domestically built submarine, based on UK designs, in the 2040s. Construction must start by 2030, leaving less than a decade to establish a workforce capable of handling reactor specifics, manufacturing, and integration. Any delay in developing human capital will cascade directly into delivery risk.
The solution is to invest in education, research, and workforce development immediately. A saying says: “The best time to plant a tree is twenty five years ago. The second best time is now”. It is urgent and imperative to infuse the entire knowledge chain with resource and purpose, if we are to catch up.
This involves bolstering the number of undergraduates and apprentices in relevant domains, all the way to supporting specialised PhD programs in nuclear materials engineering, training engineers in advanced manufacturing for reactor-grade components, and building expertise in thermohydraulics, corrosion, metallurgy, and control systems, and everything in between.
None of these components can be neglected, because then the ecosystem simply does not work – there are ample examples of this from around the world. So, systematic workforce preparation is essential to close the skills gap in time for operational readiness, and this preparation needs to start now.
From collaboration to capability
The AUKUS pact is already spurring unprecedented collaboration between universities, defence agencies, and industry across three nations. Over the past five years, our researchers have received approximately US $170 million in defence-related research funding spanning propulsion, advanced materials, and systems engineering.
Trans-Pacific partnerships with Stanford, Caltech, NASA, and the U.S. Office of Naval Research focus on advanced propulsion architectures, highlighting the mutual capability building that underpins the alliance. This is not, and cannot be, and should not be, passive technology transfer: instead, it is an active process of synchronised R&D and workforce development.
Everyone will benefit from this: we are reminded that currently, bottlenecks in manufacturing of adequate nuclear submarine numbers already affect the US Navy, as far as American needs alone are concerned.
A recent initiative, the Victorian Materials and Manufacture Research Cluster, aims to connects global primes with regional SMEs. The cluster develops high-value materials, additive processes, and digital manufacturing standards essential for nuclear-grade component certification. Modelled partly on the UK’s Defence Materials Experimentation program, it demonstrates how distributed R&D networks can accelerate qualification cycles and reduce technology readiness gaps.
An industrial systems challenge
Producing a Ship Submersible Nuclear (SSN) is among the most demanding feats of engineering. Each vessel requires integration across propulsion thermo-hydraulics, metallurgy, and rugged computing for onboard control and diagnostics, to mention only a few of the subsystems at play. The AUKUS build cycle will drive rapid evolution in manufacturing precision, sensor fusion, and validation frameworks across Australia’s industrial base.
While Rolls-Royce Submarines Ltd will supply the propulsion plant for SSN-AUKUS, sovereign opportunities exist in fabricating reactor water-circuit components and other high-assurance instrumentation. Developing this capability requires not only sophisticated equipment but sustained knowledge exchange, shared simulation tools, and cross-disciplinary collaboration – exemplifying a distributed experiment in industrial resilience.
Why people matter most
The challenge of AUKUS mirrors that of 21st-century alliance systems: integrating industrial bases, removing export and communication barriers, synchronising education, and aligning scientific priorities across borders. Yet its benefits extend far beyond submarines, or even beyond defence.
The computational modelling, materials characterisation, and autonomous systems work feeding into AUKUS will also underpin advances in quantum sensing, hypersonics, and cyber-resilient systems. For Australia, it is a once-in-a-century industrial upgrade opportunity; for the United States, a reinforcement of allied capability in the Indo-Pacific.
Ultimately, AUKUS will succeed not because of submarines but because of the engineers, scientists, and technicians it empowers – the people who ensure these technologies remain safe, effective, and adaptive for decades.
(Editor’s Note: Professor Yiannis Ventikos is Dean of the Faculty of Engineering at Monash University, Australia. He has led major collaborations in defence innovation and co-founded First Light Fusion in the UK.)
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So now 50’s heu is the past and not master the whole nuclear process as the UK is definitely a caveat which need 35 years to bé effective only few countries masters this.. usa appart recycling waste and disposal pushed the most advanced in that matter as France to stop using heu as a far better pragmatic approach for the futur
The article is just one example of the many Australian civilian and naval interests praying AUKUS Pillar 1 will keep to schedule.
However, Australia’s submarine tradition of deadlines missed and costs uncontained will hit the US and UK AUKUS delivery many 10 times worse than before.
The production of 1.1 “standard” Virginias per year is likely to reduce to 0.8 Block Vs per year (ie one every 15 months) starting with USS Oklahoma – expected commissioning 2030-31 https://en.wikipedia.org/wiki/Virginia-class_submarine#Boats_in_class .
The US is giving higher priority (than Virginias) to construction of Columbia-class SSBNs through to 2042 – now delayed to 2045.
So Australia can expect one Very second-hand Virginia in 2046. The UK’s SSN-AUKUS development schedule is even worse – expect one for Australia in 2050.
Pete
Submarine and Nuclear Matters