I just had a thought in regards to the s1 tests. As im soon to take mine, one example was, point A and point B are 50 miles apart and a/c is doing 200kts how long will it take?
Tehvon - 200 knots = 200 nautical miles per hour
Time = distance/speed so 50/200 = 0.25 and this equals 15 mins (quarter of an hour)
Hope this helps.
I have my S1 next Tuesday - Good Luck to everyone else going!