This is why correctly identifying the class of the target is so important. Wrong ship class = wrong mast height
Wrong mast height = wrong equation
wrong equation = "WTF happened to my torps! That plot was perfect!

"
Yes the plot was perfect - had the target been the ship you thought it was
Also - can someone please remind me... I have not played Silent Hunter IV for about 6 months now... it's - KNTS = distance in 3 minute right?
ex. ship traveling 500 meters in 1 minute = 15 knts?