What is that thing?

Originally Posted by swampa

I always thought it was the escape hatch. The room goes quiet everyone looking my way then

You can see the escape hatches too! There is one in the galley that doubles as a way to get the hot air out of the U boat, go into the kitchen and look up.

There should also be one in the front crew berthing area or in the torpedo room, but i never looked for it. I'd kill for a mod team to make these hatches usable.