Knot has two meanings.
- The first is the union of two end of a rope by tying them. For example, when you go to climb, you make a knot to secure yourself and not fall.
- The other meaning, refers to a unit of speed, frequently used in sailing. It is the unit that you may find in Verne's books, and it is equal to one nautical mile per hour. (1852 km/h)
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