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Diffrent Miles  
User currently offlineB7474 From United States of America, joined Mar 2001, 259 posts, RR: 0
Posted (13 years 5 months 3 weeks 3 days 18 hours ago) and read 993 times:

What is the diffrence between nautical mile,salute mile, and miles like in a car?

9 replies: All unread, jump to last
 
User currently offlineNicolaki From , joined Dec 1969, posts, RR:
Reply 1, posted (13 years 5 months 3 weeks 3 days 18 hours ago) and read 937 times:

A nautical mile is 1.150717703 statute mile, statute mile and car mile are the same.

User currently offlinePW4084 From United States of America, joined Mar 2001, 291 posts, RR: 0
Reply 2, posted (13 years 5 months 3 weeks 3 days 18 hours ago) and read 935 times:

1 nautical mile equals 6076.1 feet
1 statute mile equals 5280 feet

1.15 is the usual conversion factor................

statute miles X 1.15 = nautical miles
(and)
nautical miles / 1.15 = statute miles

A nautical mile equals 1 minute of latitude.



User currently offlineMandargb From United States of America, joined Mar 2001, 195 posts, RR: 0
Reply 3, posted (13 years 5 months 3 weeks 3 days 17 hours ago) and read 926 times:

Please correct me if I am wrong

My understanding is 1nm = 1minute of latitude at equator.

Thanks in advance.


User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4204 posts, RR: 37
Reply 4, posted (13 years 5 months 3 weeks 3 days 17 hours ago) and read 924 times:

thats correct mandargh.


Chicks dig winglets.
User currently offlineB7474 From United States of America, joined Mar 2001, 259 posts, RR: 0
Reply 5, posted (13 years 5 months 3 weeks 3 days 16 hours ago) and read 915 times:

Thanks for the responses

User currently offlineMD11Nut From , joined Dec 1969, posts, RR:
Reply 6, posted (13 years 5 months 3 weeks 2 days 20 hours ago) and read 903 times:

Mandargb asked:"Please correct me if I am wrong
My understanding is 1nm = 1minute of latitude at equator. "

Mandargb, you are not wrong in stating that. But if you are implying that it's only true at the equator, then that's not entirely true. 1nm is equal to 1 minute of latitude everywhere on earth since latitude lines are all parallel to each other. For longitudes 1minute = 1 nm multiplied with the cosine of latitude since longitudinal lines gets closer (smaller) and meet at the two poles. In this case, 1 min = 1 nautical mile for longitude only at the equator. Anywhere else it is less by cosine of the latitude.

Regards,
Nut



User currently offlineSabenapilot From Belgium, joined Feb 2000, 2714 posts, RR: 46
Reply 7, posted (13 years 5 months 3 weeks 2 days 18 hours ago) and read 898 times:

Hi guys-

The fully correct defenition of the NM as introduced by the Royal Navy well before Columbus had set sail for America is:
The length of one minute measured along a MERIDIAN.
Since we can consider the world to be almost a sphere, you may also say EQUATOR, although this is not 100% correct!
In fact, because our earth is not a perfect sphere but is somewhat flatted at the poles due to earth rotation, if you use the EQUATOR in your defenition your NM will be slightly longer: 1.4% to be precise!

I hope this resolved a wellspread misconception.




User currently offlineTimz From United States of America, joined Sep 1999, 6839 posts, RR: 7
Reply 8, posted (13 years 5 months 3 weeks 2 days 14 hours ago) and read 890 times:

Actually a minute of latitude is about 1% shorter at the equator than it is at the poles.

Since the earth isn't spherical there have been various nautical miles in the past, but the official definition is now 1852 meters. A statute mile is exactly 1609.344 meters, so that makes the conversion factor about 1.150779.


User currently offlineA330 From Belgium, joined May 1999, 649 posts, RR: 7
Reply 9, posted (13 years 5 months 2 weeks 5 days 18 hours ago) and read 865 times:

Ok, to be exact:

A Nautical mile at any place is the length of an arc of the Meridian subtending to an angle of 1' at the centre of curvature of the place.

values:
at the poles: 6107.8 ft.
at the equator: 6046.4 ft
standard: 6080 ft or 1852m. this is called the Standard or Universal Nautical mile

so what Sabenapilot says is not exactly true, even on the merideans, we have a difference due to the compression of the earth.

one tenth of a nautical mile is called 1 cable
BUT:
In the USA, the length of a nautical mile is measured as 6076.1 ft. this is called the International Nautical mile.

one statute mile is 1609m




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