In SH3 as far as I know they will always detatch after 30 mins of non-contact. I could be wrong however. I've wondered about that myself though. At least twice in the last 3 patrols I've come across hunter killer groups (or at least I assume they're hunter killers) with 6 destroyers and frigates sailing about in the Bay of Biscay and the north of Spain. I'm guessing they simulate the Allied hunter killer groups that didn't have to worry about regaining the convoys and could hunt U-Boats to the limit of their endurance. Do they give up after 30 mins I wonder:hmm: I must try them out
