[don1reed]

I'm just suggesting that if you put your TDC in manual, where it doesn't function when the scope is turned, that is, all indications on zero. You've disabled the ability for the torpedos to turn, they only go straight out of the tube.

coveat: sub is perpendicular to track of target.

example:

ship speed = 8 kn.
torp speed = 30 kn.
AOB 90° green (strb)

Law of sines

Offset Angle of Collision = arcsin ((8/30)*sin(90)) = 15.5°

since the target is traveling left to right across your sight picture, when the MOT reaches 344.5° --you fire your torpedo(s).

you will score a hit no matter if the target is 500m or 5000m--provided it maintains a constant speed of 8 kn.

...also, do a search on Greyrider's sound trainer.