I am just a chemist that likes to sail and have spent all of my time on
inland lakes.

I thought it was latitude but could be longitude, but I do remember that
the diameter of the earth at the equator in in knots is equal to 360 X 60.


Capt. JG wrote:
"krj" wrote in message
. ..

Peter Bennett wrote:

On Fri, 01 Dec 2006 14:12:52 GMT, keith_nuttle
wrote:



Since the nautical mile is defined as one minute of latitude, I doubt it
will ever disappear in earth based navigation.


The Nautical Mile was originally based on a minute of latitude, but
the length of a minute of latitude varies with latitude, so an
International Nautical Mile is now defined as 1852 metres exactly, or
6076.11549 US feet, approximately, according to Bowditch.




I believe that the nautical mile is based on the minute of LONGITUDE not
latitude. Longitude doesn't vary with changes in latitude (or attitude).
That's why when you are using paper charts (remember those) you measure
the distance with your dividers on the longitude scale on the east or west
side of the chart.
krj


Where do you guys get this?? You have it 180 degrees backward. Or, is this a
troll? :-)

http://powerboat.about.com/od/forms_..._Longitude.htm

Your initial thought was correct.

--
"j" ganz @@
www.sailnow.com

"keith_nuttle" wrote in message
t...
I am just a chemist that likes to sail and have spent all of my time on
inland lakes.

I thought it was latitude but could be longitude, but I do remember that
the diameter of the earth at the equator in in knots is equal to 360 X 60.


Capt. JG wrote:
"krj" wrote in message
. ..

Peter Bennett wrote:

On Fri, 01 Dec 2006 14:12:52 GMT, keith_nuttle
wrote:



Since the nautical mile is defined as one minute of latitude, I doubt
it will ever disappear in earth based navigation.


The Nautical Mile was originally based on a minute of latitude, but
the length of a minute of latitude varies with latitude, so an
International Nautical Mile is now defined as 1852 metres exactly, or
6076.11549 US feet, approximately, according to Bowditch.




I believe that the nautical mile is based on the minute of LONGITUDE not
latitude. Longitude doesn't vary with changes in latitude (or attitude).
That's why when you are using paper charts (remember those) you measure
the distance with your dividers on the longitude scale on the east or
west side of the chart.
krj


Where do you guys get this?? You have it 180 degrees backward. Or, is
this a troll? :-)

http://powerboat.about.com/od/forms_..._Longitude.htm

"Capt. JG" wrote in message
...
Your initial thought was correct.

--
"j" ganz @@
www.sailnow.com

"keith_nuttle" wrote in message
t...
I am just a chemist that likes to sail and have spent all of my time on
inland lakes.

I thought it was latitude but could be longitude, but I do remember that
the diameter of the earth at the equator in in knots is equal to 360 X
60.


Capt. JG wrote:
"krj" wrote in message
. ..

Peter Bennett wrote:

On Fri, 01 Dec 2006 14:12:52 GMT, keith_nuttle
wrote:



Since the nautical mile is defined as one minute of latitude, I doubt
it will ever disappear in earth based navigation.


The Nautical Mile was originally based on a minute of latitude, but
the length of a minute of latitude varies with latitude, so an
International Nautical Mile is now defined as 1852 metres exactly, or
6076.11549 US feet, approximately, according to Bowditch.




I believe that the nautical mile is based on the minute of LONGITUDE not
latitude. Longitude doesn't vary with changes in latitude (or attitude).
That's why when you are using paper charts (remember those) you measure
the distance with your dividers on the longitude scale on the east or
west side of the chart.
krj


Where do you guys get this?? You have it 180 degrees backward. Or, is
this a troll? :-)

http://powerboat.about.com/od/forms_..._Longitude.htm




You're all wrong. It's diagonalitude.

"KLC Lewis" wrote in message
et...

"Capt. JG" wrote in message
...
Your initial thought was correct.

--
"j" ganz @@
www.sailnow.com

"keith_nuttle" wrote in message
t...
I am just a chemist that likes to sail and have spent all of my time on
inland lakes.

I thought it was latitude but could be longitude, but I do remember that
the diameter of the earth at the equator in in knots is equal to 360 X
60.


Capt. JG wrote:
"krj" wrote in message
. ..

Peter Bennett wrote:

On Fri, 01 Dec 2006 14:12:52 GMT, keith_nuttle
wrote:



Since the nautical mile is defined as one minute of latitude, I doubt
it will ever disappear in earth based navigation.


The Nautical Mile was originally based on a minute of latitude, but
the length of a minute of latitude varies with latitude, so an
International Nautical Mile is now defined as 1852 metres exactly, or
6076.11549 US feet, approximately, according to Bowditch.




I believe that the nautical mile is based on the minute of LONGITUDE
not latitude. Longitude doesn't vary with changes in latitude (or
attitude). That's why when you are using paper charts (remember those)
you measure the distance with your dividers on the longitude scale on
the east or west side of the chart.
krj


Where do you guys get this?? You have it 180 degrees backward. Or, is
this a troll? :-)

http://powerboat.about.com/od/forms_..._Longitude.htm




You're all wrong. It's diagonalitude.

http://www.thefridayproject.co.uk/ta...78&mode=linear

A googlism... kewl

"keith_nuttle" wrote in message
t...
I am just a chemist that likes to sail and have spent all of my time on
inland lakes.

I thought it was latitude but could be longitude, but I do remember that
the diameter of the earth at the equator in in knots is equal to 360 X 60.


Capt. JG wrote:
"krj" wrote in message
. ..

Peter Bennett wrote:

On Fri, 01 Dec 2006 14:12:52 GMT, keith_nuttle
wrote:



Since the nautical mile is defined as one minute of latitude, I doubt
it will ever disappear in earth based navigation.


The Nautical Mile was originally based on a minute of latitude, but
the length of a minute of latitude varies with latitude, so an
International Nautical Mile is now defined as 1852 metres exactly, or
6076.11549 US feet, approximately, according to Bowditch.




I believe that the nautical mile is based on the minute of LONGITUDE not
latitude. Longitude doesn't vary with changes in latitude (or attitude).
That's why when you are using paper charts (remember those) you measure
the distance with your dividers on the longitude scale on the east or
west side of the chart.
krj


Where do you guys get this?? You have it 180 degrees backward. Or, is
this a troll? :-)

http://powerboat.about.com/od/forms_..._Longitude.htm


Don't you mean circumference?

Who needs a knot when you got velcro?

Gordon wrote:
Who needs a knot when you got velcro?

concerning in your shorts, at least a knot won't grab you by the short
hairs.

On Sat, 02 Dec 2006 02:06:20 GMT, keith_nuttle
wrote:

I am just a chemist that likes to sail and have spent all of my time on
inland lakes.

I thought it was latitude but could be longitude, but I do remember that
the diameter of the earth at the equator in in knots is equal to 360 X 60.

A Knot is a unit of speed, not distance, and the distance you are
calculating would be the circumference, not the diameter.

The circumference of the earth at the equator is approximately 360 x
60 nautical miles.

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca