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Concerning Cross Track Distance at Mid-Longitude (2)

Published online by Cambridge University Press:  12 January 2005

Peter Hoare
Peter Hoare
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Email: [email protected]
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Abstract

I wish to respond to Paul Hickley's invitation in his article on “Great Circle Versus Rhumb Line Cross-Track Distance at Mid-Longitude” in the May 2004 Journal of Navigation. It seemed an ideal teaser for an erstwhile Maps and Charts lecturer, albeit 45 years ago, to play with on his 81st birthday last week! Since it was a question for pilots, did not require knowledge of spherical trig, and was answerable in 2 minutes and 12 seconds I thought, as did Paul, that there must be a fairly simple solution. Mine follows.

Keywords

Polar Gnomic
Type
Forum
Information
The Journal of Navigation , Volume 58 , Issue 1 , January 2005 , pp. 150 - 152
Copyright
2005 The Royal Institute of Navigation

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