Sailfree
Well-known member
Encouraging some new sailors this weekend going through competent crew practical and some day skipper theory I was asked about the Nautical Mile.
I explained that it was the distance at the circumference of 1 second but this person then asked "When and how did they know that?" followed by why is the land mile 10% less.
Can anyone out there explain or point me in the direction of a information source so that I know in future and can go back to sleeping at night instead of wondering how I would establish the length of the Nm by either theory or with basic measuring equipment?
Teaching idiots is easier than those with an enquiring mind!!
I explained that it was the distance at the circumference of 1 second but this person then asked "When and how did they know that?" followed by why is the land mile 10% less.
Can anyone out there explain or point me in the direction of a information source so that I know in future and can go back to sleeping at night instead of wondering how I would establish the length of the Nm by either theory or with basic measuring equipment?
Teaching idiots is easier than those with an enquiring mind!!