Once you know the target's true course, setting AOB in the TDC is easy.
Look at the 'target' portion of the TDC (the upper guage of the TDC). The outer ring of numbers surrounding the target boat indicator represents the 'true' course of the target. Now bring up the data input device. Turn the AOB setting dial in the input device, imagining that you are turning the target boat indicator on the TDC. Just turn the input device so that the TDC target boat will be pointed along its true course on the TDC as defined by the TDC outer ring. Enter that AOB position in the data input device, then fine tune as needed.
There are other ways to guess at AOB by eyeballing the target, figuring out aspect ratios and the like, but with map contacts on, the easiest is to simply take a couple of target position readings, draw a line between the two and then simply determine the target's course. Those same two data points will also provide you with the target speed, or at least a good first estimate. Keep monitoring the target and fine tune your numbers from there.
There are a whole bunch of good threads (and video tutorials) with answers to the rest of your questions, and lots of good folks around to help.
|