The earth's circumference measured along a meridian is 40009 kilometres, therefore one nautical mile equals 1 852 metres.
Isazinge somhlaba esilinganiswa kwincopho yokhakayi esibhakabhakeni zizigidi ezine ezinethoba yemeta eziliwaka ngoko ke imayile enye esetyenziswa enye ilingana newaka amakhulu asibhozo amashumi mahlanu anesibini eemitha.