Thanks. That explains a few things. Just on your commetn about firing at diff compartments, how do you do that. I thought you had to lock on to the target in which case the perescope crosshair s always aimed at the middle. Or should I not lock on and manualyl hold the cross hair at a ship's front / back etc in order to get the torp to hit there. Btw I have waited ages sometimes for stationary ships to sink. In some cases they are on their sides but thats as far as they go. I have to fire one or two more torps to get them to finally sink

Such a waste!