Hi Geoff,
another bug to be squashed:
Out making a nuisance of myself round Rostock, I allowed myself to be spotted by a small warship. He knocked some holes in me, started a couple of small fires which were easy to deal with (O2 level at 18%
) and caused some flooding. I sat the sub on the sea bed and turned on all required bilge pumps and went to work with the welding. Suddenly, my guys start turning blue and falling over. WTF?? It seems the bilge pumps are so efficient they suck all the air out of the boat as well!! Surely this will leave a large mass of bubbles on the surface for any enterprising warship to spot?