[don1reed]

@ Coolhand01

If you use the chart above, it can help you determine how far away the target is from you.

i.e.,

Lets say your WO spots a ship Br.090R, range: 50hm, and you peer through the Zeiss 7x50's and further determine that her AOB is Red 045.

Using the above chart you match up 45° in the left column with the figure to the right beneath 5000m = 3536m. This is a snapshot of how far away you are from the target's course (aka Track) at that instant. 3536m.

You only need to get within 1000m of the target to have a chance for a desent shot...so you now have to change course and maneuver to get into a perpendicular attack posture on the target, and hustle up to it's track line to be within 1000m or so. (aka Closest Point of Approach, CPA)