– Definition: The nautical mile is a unit of length used primarily in navigation and maritime contexts. It is defined as the average distance of one minute of latitude along any meridian.

– History/Origin: The concept of the nautical mile dates back to ancient times when sailors used the stars to navigate the seas. It was formally standardized as a unit of measurement in the 19th century.

– Current Uses: Nautical miles are essential for marine and aviation navigation, as well as for measuring distances at sea. They provide a convenient way to express distances on the Earth’s surface.

– Where to Use: Nautical miles are employed in maritime charts, aviation maps, marine engineering, and oceanographic research. They are particularly useful for calculating voyage distances and fuel consumption at sea.