[jimbop]

Originally Posted by jf1981

Determine your speed base factor : 60/Speed
e.g.
BF109@300km/h bf=0,20
SPIT@240mph bf=0,25

ETA (min) = distance x bf
e.g.
10 km at 300 kmh => ETA 2 min
10 miles at 240 mph => ETA 2,5 min (2 min 30")

Use any tool to calculate true route on map e.g. 315°, add 10° for magnetic route, follow 325 mag compass.

Since you can roughly pick up the distance with finger or anything from the map scale and report it on the map, you can have anytime with the help of your fingers that distance to waypoint or target.

As well you can use a tool (I have one) or the map ruler/compass (right click on map -> tools) - this is longer however - to measure the route to newt point, or you can estimate which works fine when accuracy is not a big deal or if route is short (eg. less 20 km / 15 miles).

Navigation is easy, pick a route, convert to magnetic by adding 10°, a distance, convert to time by multiplying by your base factor and start a stopwatch, follow your magnetic compass.

With some experience, the only issue you will encounter is wind, the method is perfect.

Nicely explained, thanks.