[JackChen]

Makes you wished you were a battleship with multiple guns.

Anyway, it's a sub sim, I fired at the escorts behind the cover of their own ships or hide next to a wreck to shoot at them before running and letting lose a torp or two aft then diving deep and turning hard to port/starboard to avoid those pesky depth charges.

Another way, is basically surface in the middle of the convoy, especially when they move in box formation and let loose everything from guns to torps. Like predators who are smart, concentrate on things you can kill, I simply dive and finishing the dying (limping ships).