Well,
bother. I've tried this attack four or five times and can't score a single stinking hit, due to that whole "dowdy old transport handle like a racing boat" bit. Using ye olde external camera, I've watched Small Passenger Carriers out-accelerate and out-maneuver torpedoes like pros. "Oh, for <expletive deleted> sake!" has been heard rather often in the last two hours.
Between that and the dud torpedoes, nothing's working. Give me a Type VIIC or a Type IXC and I'll take all six or seven destroyers, three light cruisers and eight transports.
It would help if I could pause the game and pre-set the torpedo depths for all eight tubes.