John Hardy is a Sir Arthur Tange Scholar at the Strategic and Defence Studies Centre, ANU, and a Lecturer at the University of Canberra.
Virginia Class Submarine USS Hawaii during a routine port-visit to South Korea, November 2010
Amidst recent discussion of Australia’s future submarine, few commentators have come out in support of the nuclear option. Despite a compelling strategic logic for at least considering nuclear powered submarines for the ADFs future force structure, many have preferred to sideline the issue and accept the foregone conclusion that anti-nuclear sentiment is too deeply entrenched in Australia’s public mindset to bother entertaining the notion.
Determining the best capability is a separate process from determining the most political attractive acquisition decision. There is a strong element of political advocacy for a particular submarine option across much of the debate, which in itself is fine, but there is a line that needs to be drawn between lobbying for a policy and making an objective determination on capability.
The purpose of comparing various options is to establish the comprehensive costs and benefits of each. Public opinion is certainly a major detractor from the possibility of a nuclear powered submarine fleet, but it is not good cause to simply omit the benefits from the equation entirely.
There are four main lines of argument deployed against the nuclear propulsion option. The first is advocacy for a Collins 2.0 project, which holds that the best match for Australia’s capability requirements is another indigenous orphan platform. The second argument is that Australia lacks the scientific expertise to maintain nuclear powered submarines. The third argument is that buying or leasing foreign submarines would detract from the ADFs ability to operate its major weapons systems independently and thus impinge on Australia’s longstanding policy of self-reliance. The final argument is that partisan politics in Australia renders nuclear propulsion a “non-option.”
I will address each of these arguments and then offer an alternate view of the capability challenge faced by Defence in procuring Australia’s future submarine.
Collins 2.0
The Kokoda foundation recently released a report that rejected the idea of nuclear propulsion, based essentially on the claim that designing a new version of the existing Collins class submarine would be more cost effective.
Obviously, one has to question the legitimacy of a report funded almost exclusively by the same companies that are lobbying government for the multi-billion dollar submarine contract. That aside, the argument that Australia made so many mistakes with Collins that it is worth repeating the process with a Collins 2.0 project is spurious at best.
Hoping upon hope that history does not repeat is hardly best practice for managing the most expensive defence acquisition project ever proposed in Australia. In fact, it is probably a much more ominous gamble than most observers appreciate. A Collins 2.0 project could see Australia purchase a submarine of significantly inferior capability than incoming American and British designs which utilise nuclear propulsion.
Buying or leasing nuclear subs could easily be cheaper than building a domestic diesel electric – even the most conservative cost estimates with minimal budget blowouts along the way would results in a unit cost that is comparable to or, more likely, that exceeds the cost of the US Virginia class submarines that are currently in production. In addition, Australia would need fewer numbers of the generously sized and highly capable Virginia class boat, further reducing ling term costs.
A critical argument against pursuing US submarines has been a perception that America would not be interested in supplying their latest generations of submarine technology to Australia. This perception has turned out to be unfounded as US Ambassador to Australia, Jeffrey Bleich, announced this week that America would be prepared to support any future submarine option that Australia decided to pursue.
Nuclear powered submarines are now an even more attractive option, with a potential for buying ten Virginia Class boats for a total costs of roughly 25 billion at today’s cost (which will likely fall as the platform matures) against 12 much less capable conventional submarines at an estimated cost of at least 36 billion. This equates to almost 50% in additional investment - a staggering 11 billion dollars as a low estimate – in return for a substantially reduced capability return. This is an expensive and dangerous way to appease defence contractors and nuclear naysayers simply on principle.
Civilian Nuclear Industry
The first objection is that Australia lacks a mature civilian nuclear industry and could not maintain a fleet of nuclear submarines should it acquire them. The speculative correlation drawn between a civilian nuclear sector and the maintenance of nuclear propulsion in military platforms is unconvincing. Australia does possess some nuclear expertise and generates science graduates who travel overseas to pursue careers working in the nuclear field due to lack of domestic demand. The argument that supply is the issue belies the significant brain drain Australia experiences in nuclear scientists.

In fairness, I am not aware of any comprehensive cost analysis for raising an indigenous capacity to maintain nuclear-powered submarines and it is possible that it may to be unsustainable in cost-benefit terms. Yet, the Australian Department of Defence has publicly announced that it would be feasible to either utilise US submarine bases in the region or use American expertise and equipment in an Australian base. In any event, new facilities will be required for any future submarine and, although a Collins 2.0 might necessitate significantly less investment in facilities upgrades, will incur some cost.
Even if it were the case that Australia could neither raise the indigenous capacity nor attract sufficient expertise to maintain a nuclear submarine fleet, it would not be detrimental to the strategic rationale for nuclear powered subs. The argument that an Australian submarine fleet serviced by the US science and technology sector would render the ADF unable to operate independently is fraught with internal contradiction.
Self-Reliance
The third purported argument against nuclear propulsion is that any nuclear-powered submarine would require excessive dependence on an ally and circumscribe Australia’s operational independence.
If reliance on US technology and service were good cause to develop indigenous weapon platforms, then Australia ought to immediately cancel the JSF, Wedgetail, Global Hawk and Aegis system acquisition programs and begin to retire platforms currently in service that rely on external industries. This is clearly not feasible. Nor is it desirable – well, let’s reserve judgment on the JSF for another day.
It has been in Australia’s interests to accept that some degree of reliance on the US defence technology sector was a worthwhile tradeoff in order to garner access to the technology required to maintain the ‘capability edge’ sought in Australian strategic policy. Therefore, the argument infers that there is a qualitative difference between requiring external industry to support submarine maintenance and any other military platform. There is no compelling logic that suggests that this is the case.
There is another problem with arguments that raise the problems of over-dependence to reject the strategic rationale for nuclear powered submarines – the means of communication with which Australia operates its platforms and systems. Essentially, the future ADF will emphasise ‘Network Centric Warfare’ and a so-called ‘knowledge edge’ to offset numerical deficiency – but it will operate no satellites of its own. The ADF will rely substantially on allied communication networks and equipment to coordinate no matter which submarine it ends up with – and submarines aren’t the end of the story. Virtually all ADF major platforms will be interoperable with US and NATO allies’ equipment, meaning that we will be keeping pace with American technology by buying it from the US technology sector. This inescapably reproduces the original objection of dependence on an external technology sector.
Domestic Politics

A final objection to nuclear powered subs is that the current political climate in Australia, specifically the disproportionate influence of the Greens Party on the incumbent Labor government, ought to circumscribe capability decisions. This is preposterous. It is fine to note the Greens’ anti-nuclear stance as a banal observation of current domestic politics in Australia, but it is not useful in terms of policy analysis or capability recommendations.
Any debate regarding the largest defence acquisition program that Australia has ever undertaken should be firmly rooted in the capability in question, rather than the proclivities of politicians more than a decade before the project will begin. There will always be political realities to contend with, but these should not cloud good strategic judgment in the analytical process, even if they ultimately affect decisions made by leaders.
The remaining challenge
The one issue that has been left largely untouched by the above debates is actual combat capability – can nuclear powered submarines do a better job than their conventionally powered cousins? The answer is overwhelming: yes.
What does Australia want out of a submarine?
- Large patrol areas
- A greater proportion of patrol time spent on station (i.e. time on station relative to total patrol)
- Less time spent in transit (i.e. a faster boat)
- Better technology, NCW, EW, advanced combat systems, etc
- Able to integrate into coalition operations
- Able to support littoral operations in a contested maritime theater
- Able to loiter and gather/distribute tactical data
A European Commercial Off The Shelf (COTS) platform is simply not viable. Their poor range aside, small European designed submarine are designed for coastal waters and are not engineered to withstand the RANs operating environments. Furthermore, the slow transit speeds required to maximize their range are woefully inadequate for Australia’s expansive maritime patrol zones.
Bigger boats are more appropriate for Australia’s capability requirements. The aforementioned Kokoda Foundation report suggests that roughly 3,000 tons is an appropriate size for an Australian submarine able to operate throughout Southeast Asia from HMAS Stirling at Perth, Western Australia.
Conclusions
US Virginia class nuclear submarines are coming off the assembly line today at a cheaper cost than any feasible alternative. In a rarity for large-scale defence projects, the best capability is also the cheapest viable option. Could someone please remind me why we are having this debate at all?
Current arguments about nuclear-powered submarines are about external factors – industry, public opinion, domestic political parties – and not about capability. We need to separate these issues from one another when we want to determine the best capability, which should be the starting point for the longer conversation of procurement.
Once we’ve prioritised what is the best value for money, then we can start talking about what will or won’t fly in Canberra. In terms of capability, nuclear is not just an option , it is the best option.
Second image: Australia's Nuclear Research Reactor, located at Lucas Heights, Sydney. Photo courtesy of Google. Third image: Australia's Defence Minister Stephen Smith, currently presiding over key initial decisions regarding Australia;s future submarine.