It's hard to learn to use manual targetting..... but it is so rewarding once you have learnt it!!
It's really a whole new game... it's so exciting everytime you hit a ship (the first times) or hit a ship on its weak spot after having aimed for it (when you start mastering it)!!
Today I did my best shot ever... hit a destroyer running at 16 knots at 4.8 km away with a TIII torpedo!

(with a little bit of luck for sure!!

)