The knot is a unit of speed equal to one nautical mile per hour, exactly 1. The knot is a unit of speed equal to one nautical mile per hour, exactly 1. Sometimes abbreviated as KTS, the knot is measured in nautical miles per hour, and. A knot (often abbreviated to kts) is a unit of measurement of speed, with 1 knot equal to 1 nautical mile per hour. Originally Answered: why use "kts" as unit to measure a aircraft 's velocity ? First, understand that navigation in an airplane is a lot closer to navigating a ship than. The knot (pronounced not) is a unit of speed equal to one nautical mile (which is defined as 1.

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