[Leandros]

Originally Posted by Marinesko

Lately I've had some trouble sinking ships in a convoy where I am about 800-900 meters away. I fired with torpedoes set on high speed, but the ship must have spotted the tracks(odd because it was at night and they clearly had no idea I was there) and began evasive action. Then I had a hunch and I reloaded the game, firing one torpedo on slow setting. This did the trick. I am wondering do the slow torpedos make a less noticeable wake or something? Also, does setting the depth lower help? I set these at about a few feet above their draft.

At the distance you describe a "normal" merchant wouldn't have much time to make any serious deviations from its course - or speed. Particularly not at the torpedo's max speed.