It is interesting how the damage/flooding model works...
I am using GWX, OLC, and h.Sie's mods which include the Longer Repair Time.
My IXC was depth charged and damaged at 160 meters. Several compartments damaged, hydrophone destroyed, forward batteries damaged, main pump and compressor also damaged. Scrolling thru the individual compartments doing the assesment, there was no indication of flooding (no repair time for flooding indicated.)
I had to run at 2 knots to hold depth, which indicated a heavy boat, but I could not begin repairs until the DD's moved away which took about one hour.
When I went off of silent running I got flooding repair times!! The two compartments each estimated about two hours to stop the flooding, but no estimate until the compartment damage would be repaired.
The repair to the main pump was estimated to take 41 hours.
After surfacing I began the long voyage home. Repair was effected to several of the subsystems, but I kept getting a damage report on the left rudder which did not display on the crew/boat condition screen. I did have full directional control of the boat.
After some 20 hours on the surface, I got the "Boat Destroyed by Flooding."
I availed myself of the "Surrender" option, so at least we were alive !!!!
Since there was no indication of flooding repairs and the repair gang (Officer and about 8 repair petty officers placed in the "Repair" billets) were working the whole time, I was surprised at this turn of events.
I believe that the unavaliability of the Main Pump was the key as there was no way to remove the leaking water to the ballast tanks where it could be blown out.
sigh....
AD