The docent was great. "All submariners are pillow-huggers." Everyone but the commanding officer hot-bunked. You shared a bunk, and just about everything else. The things you didn't share were your pillow, your toothbrush (when there was water enough to use it), and the clothes you were wearing. Said clothes being a tee-shirt and shorts which you wore until they rotted off of you and then discarded -- no water to waste on laundering clothes.
Fresh water was made by desalination. Desalination took fuel.
I'd be tempted to cauterize my nostrils under such circumstances. I don't know how they could bear it, but presume fart and BO jokes must have been flying 24/7 during their whole deployment.
And fecal jokes are your #2 source of entertainment. Pissing off your friends is #1.
Though to be fair, my experience is based on many weeks of unwashed outdoor shenanigans, and not stuck in a tube underwater.
https://www.360cities.net/image/vladivostok-submarine-56-cen...
https://www.360cities.net/image/norway-horten-navy-museum-su...
I believe the guide said that it had to be scaled up by ~25% to fit the cameras at the time and it was still incredibly claustrophobic.
Wow, that's kind of nuts.