There are 11 fathoms in a chain, 10 chains in a furlong, and 8 furlongs to a mile. Going the other way, 2 yards in a fathom and 3 feet in a yard. That accounts

There are 11 fathoms in a chain, 10 chains in a furlong, and 8 furlongs to a mile. Going the other way, 2 yards in a fathom and 3 feet in a yard. That accounts for all the factors above.