If a DD is heading straight for me I let him pass and when he goes aft wait till he slows down for the turn around and hit him with the aft torps. That's their weakness. I always go Ahead Flank when attacking fast warships that are close enough so you can turn inside him faster. I won't try this with an S-boat due to the lack of aft tubes. Oh, when attacking convoys the first ship to hit is your primary target, warships are secondary in my book- unless it's the Yamato The Tomato.
