How to use aobf or raobf?

[Pisces]

It will be not correct if the torpedo does not hit at the exact place where the vertical line is aimed at. This may not matter for short distances, as the target is long enough. But it will mater for more distance shots. Holding on to the wrong value is just giving false instructions. That is not-teaching.

And it is not just important for getting the torpedo to hit. If you calculated the speed of a target with this. And you want to predict where it is on the map X time later you will get the wrong spot using the value you suggest. Then it doesn't work.