Nope. The air pressure on the inside of a submarine is close to ~1 bar = ~1 atmosphere.
Yes, that’s correct. The pressure chamber is the hull that separates the 1 atm of pressure inside from the 375 atm of water outside. I’m not sure what point you’re trying to make.
Turns out I’m to drunk to read. Sorry, I misread the headline. Man, I hate english writing words separately…
No worries, had a feeling it was something like that. It also doesn’t help that there’s a line break between “pressure” and “chamber” (at least on my screen), so it’s an easy mistake to make.