[Armistead]

The main thing as mentioned is to go in the opposite direction you're going down by and try to use as much speed to control the dive. If you're going down by the bow, go reverse, if going down aft, forward speed. It also helps to hit P, periscope depth, for some reason other than changing depth. A lot also depends on if you're under attack. The game is usually to yoyo up and down between about a 100 ft and a safe deepest depth. You want to be headed up when the escort makes its run. Often you have to blow tanks, so once you head up cut back the speed if you have it high, you want to go slow. You'll need to hit dive about a 100 ft if you blow or you'll usually breach the surface.