The first version is based upon two range/bearing measurements made from Vessel 1. Each measurement includes the range in nautical miles and the true bearing in decimal degrees of Vessel 2 as measured from Vessel 1.
This second version is computed using vectors and needs as input the speeds and courses of the two vessels.Note that these are 2D approximate solutions to a 3D problem. At long distances these solutions becomes inaccurate.
View the source code to this page to see the underlying formulas used.
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Created: 15 Aug 2000 Modified: 12 Aug 2011