But what is the point in creating the submarines (at a cost of £1.5bn each) if it just means keeping jobs? I'm sure KMag might be able to add any detail of what other roles those boats are for, but for an opposition so against cuts, spending £6bn just to keep
520 jobs going is not effective, surely?
(EDIT: I'm more than happy to be corrected on the amount of jobs affected by the building & maintenance of the boats - I really want to know the impact of keeping the boats and not the missiles, as was proposed today)
You wouldn't be creating the Vanguard replacements (the Trident boats), you be creating another 4 or 6 Astutes (hunter killers/guided missile subs)
We currently don't really have enough; only 6 active atm (4 Trafalgars, 2 Astutes with 7 Astute total planned but they'll be replacing the Trafalgars 1 for 1) to protect two carriers in the unlikely event we'd put both in the sea at the same time, considering you'd need two for normal carrier protection, and you need one for UK territorial waters and one for the Falklands/south atlantic. Considering two are normally being serviced at any one time There's also the HK's 'primary' role which is trundling around the north Atlantic looking for Russian ballistics and trying hard not to collide with other subs.
The HK's are far cheaper than the bigger ballistics. The later Astutes are coming in at about £760m (initially £1.15 billion) each compared to £6 billion est (and rising) for the Vanguard successor. The main problem with UK military procurement is for the big ticket items we don't ever build enough for the costs to come down. We typically put an initial order for enough for the bean counters to lower the total individual unit cost, then we cancel a number of the units, which increases the unit cost and we also normally pay BAE extra for the privilege of cancelling.
There's some issues with Corbyn's plan because while we'll probably need more than 7 not really sure we'd need 11 or 13. Although it's worth pointing out we've used the subs to attack land targets in Iraq and Libya. And we've already sunk quite a lot of dosh into the R&D for the Vanguard replacement, although primarily I believe that's been in the new PWR3 power plant design which would be usable in future subs.
The Astutes could launch cruise missile carried nuclear warheads which would be analogous to Japan's capability.Japan is non nuclear in name only, as they have the material, knowledge and resources to be nuclear armed in short order. They've also got ground launched ICBM designs (M-V). I imagine the half way house would have the UK maintain readiness to rearm at a 'screwdrivers turn' which is essentially the Japanese position.