6 feet = 1 fathom
120 fathoms = 1 cable lenth
7.5 cables = 1 mile
5,280 feet = 1 statute mile
6,076 feet = 1 nautical mile
880 fathoms = 1 mile
1 nautical mile = 1/60 of a degree
60 nautical miles = 1 degree
3 nautical miles = 1 marine league