[sergbuto]

I do not know how many subs were scripted by the NYGM team in the convoy, but I would guess one or at most two. And the wolfpack subs do not fire or do not use virtual torpedoes in NYGM. However, escorts and other convoy ships fire at the sub periscopes and may damage each other in the mess. Merchants attempt to run over the subs and escorts try to DC them. Usually the subs get sunk or left behind the convoy (maybe with still attacking escorts) before the player gets in the attack position. But that all together produces a great immersion effect.