NM is used by the International Civil Aviation Organization.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. nmi is used by the Institute of Electrical and Electronics Engineers and the United States Government Publishing Office. M is used as the abbreviation for the nautical mile by the International Hydrographic Organization. also available as nm is a non-standard abbreviation used in many maritime applications and texts, including U.S. Government Coast Pilots and Sailing Directions. It conflicts with the SI symbol for nanometre.
NM is used by the International Civil Aviation Organization.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. nmi is used by the Institute of Electrical and Electronics Engineers and the United States Government Publishing Office. M is used as the abbreviation for the nautical mile by the International Hydrographic Organization. also available as nm is a non-standard abbreviation used in many maritime applications and texts, including U.S. Government Coast Pilots and Sailing Directions. It conflicts with the SI symbol for nanometre.