Originally Posted by
ORAC
SSNR will use the same reactor as Dreadnaught and is mooted to, effectively, be the same design with the missile module removed and replaced by a UUV dock. It is also mooted, as with the new carriers, to be highly automated in weapon handling etc to enable a much smaller crew than the Astute class even though it will weigh in at over 9000 tons.
Not sure who's doing the mooting, but I'd treat that with a great deal of circumspection.