OMG, i got rocked so hard by a DD after attacking a convoy he almost sunk me.
With some tricky use of the blow ballasts and then leveling off before i get to the surface (then sink back down), i was able to keep from sinking long enough for my crew to repair the bulkheads and pump out the water just as i was about to run out of compressed air.
But..
Both prop shafts were damaged, 2 diesel engines destroyed, and 2 electric engines destroyed.
I was able to surface once the DD's went away and spent the next few days on the surface waiting for the crew to repair the shafts. Finally they fixed them, but im still dead in the water. Why, if i still have 2 diesels and 2 electrics functional can i not move?
http://i.imgur.com/z1HqWlg.png