[dd149]

From one test it seems that AI subs (Virginia tested) can fire subrocs (Sea Lance in that case) at less than 5nm distance from target, which is something that user sub cannot do. It seems this was introduced in v 1.37.
Can you check it?
Except that, all seems to work fine up to now.

One other idea, but maybe difficult to implement, surface vessels visually detect targets and automatically place them on the map. Would this be possible for a sub surfaced too. Obviously when through periscope it is player's duty. But surfaced the captain is normally assisted by lookouts in real life.