>table 8 clearly says "The nautical mile is a special unit employed >for marine and *aerial* navigation to express distance."
Non-SI units are divided into three categories: Table 6 accepted for use Table 7 accepted for use, but whose values are not known exactly Table 8 accepted for use, but not encouraged www1.bipm.org/en/si/si_brochure/chapter4/4-1.html
