There problem with ship where, in front of ship past the captain area sometimes is doesn't have enough oxygen, is this on purpose or nah.

This is an amazing sub! I was searching far and wide for a sub suitable for my 2 player campaign. I was reserved to do the Barsuk uptiering myself, but this is above and beyond what I could have thought of, loving those upgrades, and I'm especially thankful that you left a lot of "standard" things like auto reactors up to the actual player (unlike some custom sub creators who just take care of everything, eliminating the need to tinker with the vessel yourself).

poor barsuk, it suffered through many stuff

I'll check this out, This page looks absolutely hilarious so far!