[oblio]

Calculate AoB via formula.

AoB = 180 - (Target Course) + (True Bearing to Target)
[if the AoB value from the above formula is greater than 360 then subtract 360 from it.]

To find the true bearing to the target use the following:

True Bearing to Target = (U-boat Heading + Bearing to Target)
[if the "True Bearing to Target" value from the above formula is greater than 360 then subtract 360 from it.]

Someone please correct me if these formulas are wrong.