On future submarines

An interesting suggestion here:

Vanguard Class SSBN Conversion To Mother Submarine 

Given the ship's ages (especially their reactors and the stresses their hulls get placed under) I doubt this idea would be cost-effective. hay would be cool is building 4 more Dreadnaught SSBNs but fitted out like this instead of having Trident missiles. I would also like to see the UK's next SSN based on the Dreadnaughts as much as possible.

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