I've been using the mod for for a while now and the way I gather information from long ranges is with the attack disk (not to be confused with the range/angle disk). In the tutorial it shows how to set-up and use it.
It gives course and true course .
Once you have range and bearing mark it on the map, then wait X amount of minutes and take another reading. Use the Nomograph to give you speed. And that should give you all required information, with greater accuracy with each reading.
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