Notewire
Quote:
Payoff, does that work regardless of range? It has been a long time since I studied geometry, but it seems that range would affect knots given the time from bow to stern.
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Yes, this is very accurate, because the boats length is constant. I found this method here at Subsim, I forget the original author. The key is to be as close to 90 degrees AOB as possible. Of course if you are way out in front, with the target coming toward you, it is hard to get a good read. I generally do this three times with great accuracy at all ranges. Just set the crosshairs out in front of the target and man the stop watch. As soon as the bow touches the crosshairs start the watch and follow it through to the stern.
I like this method because it can be done in short peeks, allowing for minimum scope exsposure.