A mile on land is 5,280 feet.A nautical mile, on the other hand, is based on one minute of arc along the Earth's average circumference. (A minute is one sixtieth of a degree). This works out to 6,076 feet, so a nautical mile is equal to about 1.15 statute miles.
A "knot" is a measure of speed, equal to one nautical mile per hour. So if you were traveling at a speed of 60 knots, you would circumnavigate the planet in 360 hours.
At 60 knots per hour, you would increase speed by 60 knots for each hour of travel and would be traveling at a rate of 1620 knots after the 27 hours required to circumnavigate the globe.
