Matt is correct.
The first Borei was completed litterally using an unfinished Akula 971 , sectioning it, and streaching it.
We did the same thing with the boomer the George Washington by sectioning a Skipjack and adding the missle section in the middle.
Akula would be correct. Oscar would not be.
SubCommittee Vice President 2006-2008
Author-Russian Submarines, Guardians of the Motherland
Member-Saint Petersburg Russia Submarine Club