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#1
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
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. |
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#2
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
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 |
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#3
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
"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 -- "j" ganz @@ www.sailnow.com |
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#4
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
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 Ooops, I did get it backwards krj |
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#5
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
krj wrote: 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 Ooops, I did get it backwards krj sorry, didn't see this post from you until after I replied. |
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#6
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
"krj" wrote in message
.. . 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 Ooops, I did get it backwards krj Heh... I knew it was a troll. :-) -- "j" ganz @@ www.sailnow.com |
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#7
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
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 |
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#8
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
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 |
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#9
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
"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. |
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#10
posted to rec.boats.electronics,rec.boats,rec.boats.cruising
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Knots being phased out?
"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 |
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