Nibelung

[Sea Hawk]

Originally Posted by Kubryk

Thanks,

but I'd still like to learn the formula, just for fun.
That way I can calculate when in periscope view.

Its all about the 3 angles of a triangle add up to 180

1st angle is the AOB of the target.

2nd angle is the targets bearing in degrees port or starboard of 0' either the bearing as read from the scope or if greater than 180' then 360-scope bearing

3rd angle is the angle between your heading and the targets heading, either (your heading - target heading) or (target heading - your heading) depending on which is the larger of the 2.

ie
target bearing port or starboard from 0' = TB

AOB + TB + differance between the headings = 180

AOB = 180 - (TB + differance between the headings)

But it is far easier to use the angle tool on the chart.
If you have "OLC gold" then the wiz wheel/attack disc gives you the AOB in seconds.
You can make an attack disk to hold in your hands if you prefair.