Determining Angle on Bow - reliable mathematical approach found

[3catcircus]

Originally Posted by Davidorado

I reaaaally tried to wrap my head around this topic, but without these images it´s almost impossible.
Is anybody out there, who has these images stored or could draw something which could help me understand what is going on?


In the german book "Agru-Front Lehrmaterialien" from DonL1978 there was the same approach of calculating the AoB. But I wasn´t able to catch it either, due to the lack of explaining pictures.
At the end there was a table with AoB´s in the distance of 500-1000m with common ship lengths from 60-240m.

This might help in battle, but it´s not helpful for understanding.


Thank you in advance Kaleus

I wouldn't put much stock in this method. No one is going to thumb through a book of trig tables.

Easiest method beside eyeballing it is to plot. Range, bearing mark. Wait 3:15. Then range, bearing mark. You now have speed and course. With course, you can draw AoB.

U don't have to be all that accurate on range and bearing. The key is to get the speed. The two plotted points get you course. If you do it early enough, you can get at least 3 points. The more points you plot, the more your error goes down. As long as you aren't trying for a shot from over 5 km away, AoB within a few degrees is fine. The key is accurate speed.