The International System of Units - 9th edition (2019) Ver.4.01, June 2026 Published in May 2019 - Revised in June 2026, BIPM, pp.140-141, Table 8. Non-SI units
The International System of Units - 9th edition (2019) Ver.4.01, June 2026 Published in May 2019 - Revised in June 2026, BIPM, pp.140-141, Table 8. Non-SI units 注記(k) The nautical mile and the knot are used in marine and aerial navigation to express distance and speed, respectively. There is no internationally agreed unit symbol for either unit.