Originally Posted by
ORAC
The PW2 is based in the Virginia S9G with a reactor life of 33 years. That gives a bit of leeway over the planned 25 service life of the submarine for up to another 8 years - depending on when the reactor went critical.
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No they aren't they are a pwr2 designed for vanguards but modified with some of the technology concepts of the S9G to extend their unrefueled life. PWR3 is the first clean sheet design using the a S9G design concepts
They might have some wiggle room to extend service life of some them due to the fact that some of the early boats have seen sitting around for years waiting for maintainence