Bob F Posted May 13, 2005 Report Share Posted May 13, 2005 When talking navigation, what is a Rhumb Line and a Great Circle? What's the difference between the two? cheers BF Quote Link to comment Share on other sites More sharing options...
blueboatdriver Posted May 13, 2005 Report Share Posted May 13, 2005 A line that passes through all meridians at the same angle. When drawn on a Mercator chart, the rhumb line is a straight line. However the Mercator chart is a distortion of a round globe on a flat surface, so the rhumb line will be a longer course than a great circle route. I've just Googled it and come up with this Bob. Quote Link to comment Share on other sites More sharing options...
Swainiac Posted May 14, 2005 Report Share Posted May 14, 2005 .................and theres me thinking it was the meridian that had to be crossed by Royal Naval vessels, to qualify for the free rum ration!! Silly me! Quote Link to comment Share on other sites More sharing options...
jack Posted May 14, 2005 Report Share Posted May 14, 2005 Typical on here.Blueboat driver bowls a "googly" and Rich comes up with a "rum" reply.....jack Quote Link to comment Share on other sites More sharing options...
Bob F Posted May 17, 2005 Author Report Share Posted May 17, 2005 ...I was thinking they were something to do with the London Underground. Thanks Blueboatdriver...I think. Quote Link to comment Share on other sites More sharing options...
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