Cold Waters Nuclear Submarine game/sim website by PMC.
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If your submarine is flooding make sure damage control teams are working on the PUMPS first, then flooded compartments. If you assign damage control team to a flooded compartment but pumps are out of order, no water is removed and flooding continues. Always repair pumps first.
Surfacing will remove flooded compartments of water. Obviously if enemy just struck your sub with either torpedo or whatever that hedgehog type ruskie rocket weapon was, you are not going to surface as it would be equal to suicide or very best a surrender, are you ready for Siberia, I'm sure not.
You can fight flooding by getting into shallow depth, if you can go to periscope depth, it greatly reduces the water pressure and flooding.
When your damage control teams are working your submarine is making a lot of noise, you cannot keep the boat in silent running with damage control teams banging away with their tools.
When you are fighting flooding with damage control teams doing their best, often times your submarine starts to sink. If that happens you have to drive/move forward and make your depth shallower, use dive planes or ballast control OR both of those towards shallow depth, then you can maintain depth without sinking. Depending of the severity of the flooding you might have to go full or flank speed ahead and control dive planes carefully to keep your boat from sinking to the bottom. Don't panic as panic skills faster than russian torpedo. Remember your training; full ahead, dive planes and possibly ballast to shallower direction and stay cool, your crew depends on your decision making (huh what sort of role playing nonsense paragraph this turned out to be haha).
If your boat starts to sink, you order full ahead speed, dive planes to shallower... be very careful when you get near the surface, you will at some point start to cavitate if your speed is high, that might not be avoidable, but what you really must avoid is not to breach the surface, it is very scary to be in fast speed at very shallow depth trying to control that depth manually as I recall you cant just put the depth to 50ft and be done with it, once boat reaches there it starts to sink again, you have to maintain dive planes to towards shallow depth (whatever the terminology was I forgot it now).