Excellent tutorial mate, I am looking forward to try it out in practice. I have a question tough.
When you start drawing the first 3 bearing lines, what is the minimum difference in bearing between first two observations in order to start drawing the lines? To clear things out, your second observation after 5 minutes showed less than 10 degrees difference in bearing, so you waited another five, and then another five. So I guess it has to be at least 10 degrees difference between first two observations? Am I right?
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