Well I can tell you from my experiences as a submariner that living in a low O2 environment for any period of time sucks the life out of you. We had a problem with our O2 generator and had to burn candles (not the birthday cake kind but those made of potasium superoxide) well our time out to sea was extended and we had to conserve candles so only the barest minimum were used. It got to the point where the only place you could keep a cigarette lit was near the candle station (the Capt was a smoker and would rather die than turn off the smoking lamp). I had a headache for over a month, what a good feeling it was when we could finally surface ventilate…Отсюда.
Полный альбац. На подводной лодке не хватает кислорода, подводники вынуждены считать каждый вдох, а капитан продолжает курить! При этом он не только тратит кислород, но и отравляет единственный его источник: видите ли, у него сигарета в других местах гаснет. Представляю себе мораль на этой подводной лодке. Ай да офицеры у потенциального противника.