More Particularly, “Otherwise manufactured from the workshop, anything was built within an hour or so’s push from Stamford”. 6 miles, or fifty five.7 km) at the end of a 6 weeks’ voyage. (The geographical mile is defined as one minute of arc alongside the Earth’s equator; Evaluate the nautical mile, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/