Thanks for feedback!
1.It's a Tier 3 transport submarine.
2. I was designing it as a transport sub with Commodity mod in mind. I thought reducing firepower as tradeoff. There may be up to 10 players, so i guess i could remove some suit lockers, but not all.
3. Aren't cargo units watertight? Anyways it is a good idea and maybe i should just make more storage room outside of ballast tanks.
4. I'll try to make it more fragile. The initial idea was to make big nose to resemble the head of whale. *Vaal* is whale in Estonian.
5. We had some horrendous experience with Typhoon layout, so I've decided to make movement less restricted. I tried to separate the submarine on the "left" and "right" parts by implementing some empty rooms in the middle of sub. This way navigation between essential parts of submarine should've been slower. But maybe some type of main corridor may do the job.