The inner pressure hull (that I was unaware of, in the LA class SSN) near the bow failed to rupture.
I have three novels at home about both U.S. and Russian subs, and in Typhoon, the author states that the LA class SSN has one hull, that if cracked, the sub would flood and sink.
In Danger's Hour, a fictional LA class SSN, the USS Tulsa, is sunk to the bottom of the Norwegian Sea (the surviving crew are rescued) by being rammed from behind by a double-hulled Akula II class SSN, Gepard.
Oh. I didn't realize that yourknowledge was so deep ...
You are aware that novels are, by definition, fiction aren't you? If you want to read about the real thing dig up a copy of "Blind Man's Bluff" by Sherry Sontag and Christopher Drew. Then you can see what U.S. subs crews really did with their second class boats.
The real problem is that in all likelyhood, nobody here who could answer your question is allowed to.
“I have three novels at home about both U.S. and Russian subs”
I think the keyword there is “novelS”. In other words, just someone’s thoughts, not facts.
Trust me, U.s. submarines have two hulls.
ex-STS2(SS) and would have been STS1(SS) if I had agreed to extend for a year. I had passed the 1st class exam but didn’t have sufficient time left to make the next step.