pilotyip
Well-known member
- Joined
- Nov 26, 2001
- Posts
- 13,629
Every 60 kts is 1 mile per minute, 120 kts is 2 miles a minutes, divide speed by 60 and gets miles covered per minute, reverse measure miles covered in 6 minutes and multiply by 10 for ground speed. Likewise measure how many miles covered in 36 seconds and multiply by 100 and get ground speed. Measure elevation of the North Star and it will give your latitude in the northern hemisphere.