Editing Nautical mile (section)

== Unit symbol ==
There is no single internationally agreed symbol, with several symbols in use.<ref name="BIPM" />

* '''NM''' is used by the [[International Civil Aviation Organization]].<ref>{{cite web |title = WS SIGMET Quick Reference Guide |url = http://www.icao.int/APAC/Documents/edocs/WS-SIGMET.pdf |website = ICAO |access-date = 2016-06-09 |archive-date = 2020-11-21 |archive-url = https://web.archive.org/web/20201121232112/https://www.icao.int/APAC/Documents/edocs/WS-SIGMET.pdf |url-status = live }}</ref><ref>International Standards and Recommended Practices, Annex 5 to the Convention on International Civil Aviation, “Units of measurement to be Used in Air and Ground Operations”, ICAO, Fifth Edition, July 2010.</ref>
* '''nmi''' is used by the [[Institute of Electrical and Electronics Engineers]]<ref>{{cite web |title = APPENDIX A: SYMBOLS AND PREFIXES |url = http://www.ieee-pes.org/appendix-a-symbols-and-prefixes |publisher = IEEE |access-date = 2016-06-09 |archive-date = 2021-04-23 |archive-url = https://web.archive.org/web/20210423091326/https://www.ieee-pes.org/appendix-a-symbols-and-prefixes |url-status = live }}</ref> and the [[United States Government Publishing Office]].<ref>{{cite web |title = U.S. Government Printing Office Style Manual |url = https://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2000/html/GPO-STYLEMANUAL-2000-13.htm |publisher = U.S. Government Printing Office |access-date = 2016-06-10 |archive-date = 2018-11-19 |archive-url = https://web.archive.org/web/20181119011624/https://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2000/html/GPO-STYLEMANUAL-2000-13.htm |url-status = live }}</ref>
* '''M''' is used as the abbreviation for the nautical mile by the [[International Hydrographic Organization]].<ref>{{cite book |title=Symboles, Abréviations et Termes utilisés sur les cartes marines |trans-title=Symbols, Abbreviations and Terms used on Charts |year=2016 |publisher=Service Hydrographique et Océanographique de la Marine (SHOM) |language=fr, en |edition=6th |url=https://www.iho.int/iho_pubs/standard/S-4/INT1_FR_Ed6_2016.pdf |access-date=2018-01-04 |volume=1D (INT1) |archive-url=https://web.archive.org/web/20160821103500/https://www.iho.int/iho_pubs/standard/S-4/INT1_FR_Ed6_2016.pdf |archive-date=2016-08-21 |url-status=dead }} also available as {{cite book |title = Symbols and Abbreviations used on ADMIRALTY Paper Charts|publisher=[[United Kingdom Hydrographic Office]] |year=2016 |edition=6th |at=section B, line 45 |isbn=978-0-70-774-1741 |volume=NP5011 }}</ref>
* '''nm''' is a non-standard abbreviation used in many maritime applications and texts, including U.S. Government Coast Pilots and Sailing Directions.<ref>{{cite book | title = Dutton's Navigation and Piloting| publisher=[[Naval Institute Press]]|location=[[Annapolis, MD]] | year=1985|edition=14th|isbn=0-87021-157-9}}</ref> It conflicts with the SI symbol for [[nanometre]].