What is a chain?
The chain is a unit of length measurement commonly used in surveying and land measurement. It is primarily used in countries that follow the imperial system of measurement, such as the United States and the United Kingdom. One chain is equal to 66 feet or 20.1168 meters. It is further divided into 100 links, with each link measuring 0.66 feet or 7.92 inches.
The chain was historically used for measuring large areas of land, such as farms or estates. Surveyors would use chains to measure distances between points and establish boundaries. The use of chains allowed for more accurate measurements compared to other methods available at the time. Today, the chain is still used in some specialized fields, such as civil engineering and land surveying, although it has been largely replaced by more modern and precise measurement tools like GPS.
What is a UK Nautical Mile?
A UK nautical mile is a unit of measurement used in navigation and maritime activities in the United Kingdom. It is defined as one minute of latitude along any meridian on the Earth's surface. This means that a UK nautical mile is equal to 1/60th of a degree of latitude.
The UK nautical mile is primarily used in marine navigation, especially for measuring distances at sea. It provides a standardized unit of measurement that allows sailors and navigators to accurately determine their position and plan their routes. It is worth noting that the UK nautical mile is slightly longer than the international nautical mile, which is defined as 1,852 meters or 6,076.11549 feet.