I determine angle on bow after i have estimated the course of the target.
1st i draw a line with the ruler tool to represent the course of the target... this line stretches out about 2 or 3 miles ahead of the target boat.
2nd i use the compass tool and start out ahead of the target... move to the bow of the target, then move to my boat.
The angle presented in the compass is your AOB every time.
i determine speed either by timing between two points for one or two minutes, or by how long it takes the lenght of the ship to pass through cross hairs method but i find this cross hair method usually only accurate at about a 90 degree intercept angle.
Range i determine with the scope or UZO range finder.
attacking a few ships at a time in convoy is pretty easy because all you really have to change is AOB since you know they are all going a set speed. Switch targets in the scope, change AOB leave everything else the same and fire.... move to the next guy.
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