I would definitely like to see more of this - even more, I would like to see the results of damage inside the boat - flooding, fires, injured/dead crew, etc. The abilty to try to abandon ship. To blow tanks, surface, and attempt to scuttle the boat. I know the germans had some sort of aqua-lung thing for this purpose for the crew. You may die in the attempt, or become a POW, or possibly even survive and return to duty if youo're close to home. Play this part out to the bitter end.