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Originally Posted by WernerSobe
I have not guessed AoB. this method was exact. Look ive placed the boat 90° to the course. When your boat is right angled to the course you can just translate bearing into AoB. In the Video im saying that since the bearing was about 310 the AoB should be about 40. That was a mistake. It should have been 50. (310+50=360). Ive noticed it later and have corrected the AoB.
Its easier to use that method, otherwise id need to make another location mark.
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You should probably change that back since your first AoB was correct. If you are set up 90 degrees to his course the AoB will increase up to 90 when he cross your bow at the bearing 0 (360). The bearing will increase from 310 to 360 (50), but AoB must increase by just as much (50) so it must be 40 at the time when bearing was 310.