Steve,
I believe this has something to do with the crew fatigue model in the Advanced Holywood Damage. Change from SH3cdr to "no fatigue", delete any [compartment] references to /sf3cdr/cfg/Medals and renown.cfg. and see what happens.
One version of the Advanced Holywood (I think it was on the DieHard thread) is designed to fubar the repair crew. I had several problems while experimenting with the engine room of the XXI ("cannot comply") and another compartment. I stripped all crew mgt related from Holywood Damage and made a personalised version. If you're not using RuB, IuB or NYGM, you could as well as try it:
http://rapidshare.de/files/14631212/...Tweaks.7z.html
If I remember right, you must have RuB. You might as well as copy / paste from zones.cfg only the u-boat section.
Holywood Advanced Damage by Gouldjg
(Non RuB-IuB version, further tweaked by VonHelsching)
Differences with original Advanced Model
This version of Advanced Holywood Damage is for use with the stock game and Not with RuB or IuB, since it contains changes only for the uboat and discards changes in the damage model of ships. Also all aspect regarding crew management schemes were stripped out. Implemented some ideas elaborated in DieHard thread (a mod, which was never published), enhancing the near-death experience, plus giving you a *slight* possibility of:
-fighting back, even while heavy damaged
-limping back to port
I will not disclose anything more, In order not to spoil the spoilers...
---> Do NOT JSGME-it in the middle of the patrol. ONLY before loading a savegame before statring the mission; @ the office <-----