Replacing Trident with Astute could save £45 billion

As debate intensifies on the future of Britain’s nuclear deterrent, a fiscally reasonable, strategically sound alternative is emerging in the form of the new Astute class submarine.

With the production and development costs of the Trident successor programme costing £20 billion according to the Ministry of Defence and £30 billion according to Greenpeace, the Astute class nuclear submarines (already under construction) are well suited to providing Britain with a continued nuclear deterrent while saving up to £45 billion.

Astute submarines could be equipped with nuclear warheads for launch via cruise missile. Trident missiles have a range of 6,000 nautical miles whilst an Astute submarine equipped with cruise missiles have a range of 1,000 nautical miles. The key trade off, therefore, between a full SSBN system and Astute would be a decrease in the potency of the nuclear armament in terms of range and yield. However, given Astute’s capability to circumnavigate the globe without surfacing or requiring refueling at any time, questions of vulnerability are not as significant as might normally be the case with a submarine of less sophistication then the current Trident-bearing Vanguard class submarines or an Astute. Indeed, some forward-thinking BAE planners have already been considering a modified Astute with inter-continental ballistic missile capabilities as a potential successor to Trident.

Economically, a strong argument exists for the replacement of Trident with Astute, namely in the form cutting costs whilst saving jobs. The four Astute submarines currently under order were originally estimated to cost £2.5 billion although final costs are likely to be in the region of £3.8 billion – a salient warning as to the likely cost overruns of a new (i.e. non-Astute-based) Trident successor programme. But having already spent the large sums of trial and error in development costs, Navy sources confirm that further production costs will be much reduced. As such, Astute experts cite the cost of as many as six more Astute submarines at £3.4 billion. Such an expansion of the Astute programme would ensure the security of stability of Britain’s nuclear deterrent and would safeguard jobs whilst still costing less then the planned Trident successor programme.

Beyond construction costs, it would be necessary to maintain a nuclear warhead development programme for a sea launched, nuclear warhead armed tomahawk cruise missile. As nuclear scholar Dr. Neil Ritchie of Bradford University has noted:

“If the US were to share is W80-0 TLAM-N nuclear warhead design with the UK, as it has done with the W76 Trident warhead, it is conceivable the UK could design and manufacture an Anglicised version without nuclear testing and within acceptable tolerances using US test data and the array of ‘stockpile stewardship’ facilities at Aldermaston.”

Cost estimates for this effort vary but Naval experts consider it to be in the region of £2.5 billion, similar to the £2 to £3 billion estimated for the warhead development of Trident’s successor. Furthermore, reductions to force protection (the attendant surface warships, submarines and other units required to escort a submarine out of UK waters and into the safety of the anonymity of the Atlantic) would be possible not least because with more submarines with nuclear capabilities on operations, less importance would be ascribed to any particular vessel exiting UK waters. A move to cut attendant forces could see as much as a one-third cut in costs achieved as vessels that are currently tasked with spending weeks at a time on every three months escorting the submarines into or back from station in the Atlantic would be freed up for other duties or procurement could be cancelled all together.

Balanced against this is the fact that major cuts to surface ship budgets must be carefully considered in the context of the multi-mission role of such vessels.  These cuts should be considered in the context of a full strategic defence review of Britain’s actual naval needs. Even so, a switch from Trident to Astute would open the door for further savings on the Trident fleet’s potentially vast through-life costs of £76 billion.

Astute could save £45 billion

Job cuts that would otherwise result from the outright cancellation of a successor to Trident would also be prevented as the same 3,500 shipyard workers in Barrow and 2,400 related project workers across the UK currently working on Astute and who expect to work on Trident’s successor would simply continue to be employed on an expanded Astute project.

The political implications of such a move are also beneficial for the government. Alan Whitehead MP told Left Foot Forward it was, “a win-win cut that is genuinely painless and still leaves us with real nuclear capacity.” Such a move would also signal a turn away from the Cold War era doctrine of Mutually Assured Destruction between NATO, Russia and China, with positive implications for the prospects of the Obama-led nuclear disarmament effort amongst the great power.

With support for a cheaper, less powerful alternative nuclear deterrent standing at an all time high of 40 per cent as revealed in last week’s Left Foot Forward YouGov poll, replacing Trident with Astute is a decision that makes political, economic and strategic sense. Realpolitik-minded defence experts will be watching the government’s response to an Astute-based alternative with great interest in the months to come.

9 Responses to “Replacing Trident with Astute could save £45 billion”

  1. Left Foot Forward

    New research: Replacing Trident with Astute could save £45bn http://bit.ly/40u2TC

  2. Will Straw

    Marcus Roberts’ new research for @leftfootfwd showing potential saving of £45bn from replacing Trident with Astute http://bit.ly/40u2TC

  3. Albert M. Bankment

    Yes, I used to believe that this was the obvious solution, until I thought a bit harder. Cruise missiles are sub-sonic, and are consequently vulnerable to being shot down, or even being tipped off course by skilled fighter-pilots. There is, as so often, an analogy from history; this was the inherent weakness of Mr Hitler’s V1 ‘doodle-bugs’, a small matter of 65 years ago. The V2 rocket, by contrast, being a ballistic and supersonic weapon, was immune and far more dangerous.

    If you accept that a nuclear deterrent of some sort is desirable or necessary, which is a different question, Cruise missiles are an alternative but they are not a comparable substitute.

    Oh, and by the way, the Greenpeace figures are simply risible.

  4. Marcus Roberts

    Thanks Albert. I too have given the cruise vulnerability question some thought but upon examination I think the balance of risk still make s a lot of sense. True anti-missile capability is still someway off with even Patriot and Arrow proving markedly inaccurate. Besides, a multiple cruise launch should ensure redundancy.

    As for the Greenpeace figures, I don’t think they’re risible by any means. But even if we took the MoD’s own figures (which history alone would warn us against accepting at anywhere near face value!) we’d still make a substantial saving of 9.1bn on development and production.

  5. Albert M. Bankment

    Greenpeace economics are just thumb-in-the-air, think-of-a-number-and double-or treble-it fantasy accounting. They have little respect for the truth. I very much doubt that they have the expertise accurately to cost something as complex as a multi-decade hardware/software/personnel/maintenance programme which is subject to multiple levels of need-to-know security protection. DAMHIK, IJD, OK! Furthermore, over the life of the programme, the Trident replacement budget is about 5% of the defence budget. I’m not an apologist for nuclear deterrence – indeed, it strikes me as probably unnecessary – but I think a few facts ought to be allowed into the argument.

    I used to support Greenpeace (rather generously, in fact) until the Brent Spar débacle. Do you remember that? They made all sorts of authoritative assertions about the amount of toxic chemicals and metals on the platform. When these were exposed as being complete drivel, Greenpeace simply giggled and justified the lies by the “greater truth” of stopping the disposal of Brent Spar by sinking it. They are self-righteous zealots who do not feel bound by adherence to truth or accuracy. Their prevailing attitude is one of “We think this is wrong, and therefore anyone who disagrees with us is, by definition, evil, stupid or being bribed”.

  6. Christian

    Replacing Trident with Astute could save £45 billion | Left Foot …: The Astute class nuclear submarines alrea.. http://bit.ly/18zeqJ

  7. DevonChap

    This is the big If “If the US were to share is W80-0 TLAM-N nuclear warhead design with the UK, as it has done with the W76 Trident warhead”. The US has retired this warhead. They gain nothing by sharing it with us and lose economies of scale in keeping Trident in production making each of their Trident missiles more expensive. So why should America do this? The Obama administration doesn’t seen particularly well disposed to the UK.

  8. Jon

    This whole idea has a major flaw.

    Imagine a scenario where a conflict arrises in North Korea and the UK sends a naval task force in support of a UN/US/NATO effort. First day of the conflict, the UN/US/NATO forces launch a massive cruise missile barage on North Korea, including some conventional cruise missiles from our Astute class. What is to stop the North Koreans, Chinese or even the Russians thinking that our cruise missile has a nuclear payload?

    I assume you can see where I am going with this?

  9. Heirloom Corn Seed

    Great post.Thanks for sharing such a useful information with us.

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