Talk:Rhumb line

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Please consider using this diagram in the article.

[edit] Azimuth and latitude?

I guessed you need longitude and latitude for both of the points the loxodrome should connect. Azimuth is only another word for latitude, isn't it? --85.74.3.188 10:13, 11 Apr 2005 (UTC) (de:Benutzer:RokerHRO)

No, azimuth is another word for bearing or direction. ~Kaimbridge~ 15:30, 12 October 2005 (UTC)

[edit] 0, 90, 180, 270 degrees are not considered a rhumb line or loxodrome

0, 90, 180, 270 degrees are not considered a rhumb line or loxodrome, also the definition is that is cuts ALL meridians at a constant angle. It should be more clear that these are not rhumb lines or a loxodrome, rather then just being exceptions. I know this is true for a loxodrome, I'm unsure if this is specific to a loxodrome.

90 and 270 might be as they do cut at a constant angle, I remember reading somewhere these are still not loxodromes.

--Ant 18:31, 6 January 2006 (UTC)


sorry,but 0,90,180,270 degrees are considered as rhumb lines well it is very famous that the equator is both a great circle and a rhumb line so are other latitudes and longitudes since they have a constant true direction they are considered as rhumb line

 

® "0, 90, 180, 270 degrees are not considered a rhumb line' --Anthony

® "sorry,but 0,90,180,270 degrees are considered as rhumb lines" --Anonymous

It all depends on what your definition of Rhumb Line is. If your definition is that which is commonly found in professional navigational sources, then...

Rumb Line   A line on surface of the earth making the same "oblique" angle with all meridians,

then yes, Anthony is correct and the bearings 0º, 90º, 180º and 270º can not be true rhumb lines, since those headings fail the "oblique angle" test from the above definition. The source for the above definition is the: American Practical Navigator, 1966, published by the U.S. Naval Oceanographic Office, and in continuous print for over 200 years and commonly referred to as the "Bible" of navigational data, methodology, definition and history. It is found on every ship of the U.S. Navy. However, less precise definitions, like those often found in common dictionaries (and unfortunately, in this Wikipedia article, as well) fail to include the "oblique" angle distinction. As for me, I'll stick with the professional navigators when it comes to questions of meanings of their own language that they evolved for hundreds of years of practical usage. Boot (talk) —Preceding comment was added at 22:40, 6 May 2008 (UTC)