Smart ships like that can be more easily taken care of if you add manually some lead, knowing from the start they are the "quick" type.
Attacking the Hunt on the convoy qualification training mission is quite handy in this case to "test" the AI. One has to shoot a good torpedo, or more preferably a spread, at the right distance in front of the target, for her to run into the torpedo while she specifically tried to avoid it by speeding up. I find this kind of vicious attacks rather satisfactory
