TDW,
OK. Good news. Firing a spread of pattern runners on a night attack, a ship on the far side of the convoy was hit. The escorts then responded to that side of the convoy. It seems that all the escorts went active at that point because the destroyers closer to me acted like they had detected me but I gave them the slip.
To me, that shows that when they have a solid contact, they prosecute it vigorously (evidenced by them pounding the hell outta me). That fact that I was able to slip away soon after the attack makes me think they weren't sure I was there. They gave up soon after.
Unlike the AI in the original Silent Hunter, which seemed "all knowing", this version of IRAI seems pretty well balanced. Hopefully, this cuts down on the ridiculous tonnage totals.
So far so good!
Now enemy ASW is something to fear.
U-Bob