This tutorial helped me immensely, I went from missing every darn ship to now hitting almost everytime. One merchant got away from me tonight even after hitting him with one torpedo. I ran out of forward torps so I got within about 2k meters and spun the boat around and shot two rear torps at him, one hit, but then he hit the throttle hitting 20 knots, I chased him for over an hour with him on fire but he never went down and my gunners suck azz and missed more than they hit him. LOL
Yesterday I reverted back to SH4 and played just so I could torpedo some ships, then I found this thread and what a difference it made. Thank you very much.