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Old 04-26-19, 01:35 PM   #16
Pisces
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I agree that Kuikueg's explanations are a bit tough to digest. It is explained like a mathematics course. Eh, who can blame him.

Another forum member Neuro has published his own explanation of the methods shown by Kuikueg. I think it is a lot easier to understand why and how the steps are done.

http://ricojansen.nl/downloads/Four_...2C%20Neuro.pdf

And if the work load seems to much for the navigator, simply allow more time between the bearings. It doesn't have to happen in within minutes.

I'm sure it depends on the kind of person which tactics or methods are chosen. But at extreme range you don't really have visual means to set course perpendicular too the target track. At best you can guestimate. And that works. So aside from it being a person thing, it is clearly also a situation thing.
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Last edited by Pisces; 04-26-19 at 01:50 PM.
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Old 04-27-19, 05:45 AM   #17
ljqcn101
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Both the explanation from Kuikueg and Neuro worked great for me. But still, it is the particular method for ownship constantly moving that I was concerned about.

Not just because of the workload, but also this method relies heavily on the little triangle formed by 3 bearing lines to determine the extrapolated 4th line. In practice, this triangle could be pretty far away or relatively small that would contribute to plotting errors. And the two anchor points that the extrapolated 4th line passes through are always close to each other, making any plotting error to be exaggerated.

By changing your mind to plot relative motion, you can use the stationary method which is less prone to plotting error.

You can also use the formula and a calculator, or a disk. But I guess people using this method really love plotting.

Last edited by ljqcn101; 04-27-19 at 09:29 AM.
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