Editing Geographical mile (section)

==Relationship with the nautical mile==
{{main|Nautical mile}}
The geographical mile is closely related to the [[nautical mile]], which was originally determined as 1 minute of arc along a [[great circle]] of the Earth<ref>{{cite book|title=Mapping|author1=David Greenhood|author2=Gerard L. Alexander|pages=[https://archive.org/details/mapping00gree/page/51 51&ndash;52]|publisher=University of Chicago Press|year=1964|isbn=9780226306971|url-access=registration|url=https://archive.org/details/mapping00gree/page/51}}</ref> but is nowadays defined by treaty as exactly 1,852 m.<ref name=Admiralty /> The US [[National Institute of Standards and Technology]] notes that "The international nautical mile of 1,852 meters (6,076.115&nbsp;49... feet) was adopted effective July 1, 1954, for use in the United States. The value formerly used in the United States was 6,080.20 feet = 1 nautical (geographical or sea) mile."<ref>{{cite report |url=https://www.nist.gov/sites/default/files/documents/2017/04/28/hb44-15-web-final.pdf |archive-url=https://web.archive.org/web/20170505110701/https://www.nist.gov/sites/default/files/documents/2017/04/28/hb44-15-web-final.pdf |archive-date=2017-05-05 |url-status=live |work=[[NIST]] |title="NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, General Tables of Units of Measurement |page=C-15 (Appendix C, footnote 14) |access-date=April 9, 2019 |date=November 2014 }}</ref><ref>{{cite report |url=https://nvlpubs.nist.gov/nistpubs/Legacy/MP/nbsmiscellaneouspub214.pdf |archive-url=https://web.archive.org/web/20170201042337/http://nvlpubs.nist.gov/nistpubs/Legacy/MP/nbsmiscellaneouspub214.pdf |archive-date=2017-02-01 |url-status=live |work=[[NIST|National Bureau of Standards]] |title="Units of Weight and Measure (United States Customary and Metric) Definition and Tables of Equivalents" |page=4 |access-date=May 5, 2021 |date=July 1, 1955 }}</ref> This deprecated value of 6,080.2 feet is equivalent to {{convert|6,080.2|ft|m|2|disp=out}}. A separate reference identifies the geographic mile as being identical to the international nautical mile of 1,852 m and slightly shorter than the British nautical mile of {{convert|6,080|ft|m|2}}.<ref>{{cite book |editor-last=Weast |editor-first=Robert C. |title=CRC Handbook of Chemistry and Physics, 62nd edition, 1981-1982 |isbn=978-0849304620 |location=Boca Raton, Florida |publisher=CRC Press |page=F-297 }}</ref>

Scandinavians used their own version of the geographical mile as their [[nautical mile]] up to the beginning of the 20th century, causing it to be more well known as the '''sea mile''' in Danish ({{lang|da|sømil}}), [[Norwegian units of measure|Norwegian]] ({{lang|nb|sjømil}}), and [[Swedish units of measurement|Swedish]] ({{lang|sv|sjömil}}).