Quote:
Originally Posted by Fanuboat
2- Distance in 3m15 x 10 = speed in knots
o_O no need to do calcule like that.
Use the 3min15 méthod then first mark with the second one give you the speed of the targe thats it.
You can also use 1,37 min.
1,37 x 2 = 3,14 so very close to 3,15
using 1,37 if you get as a result 0,4 you do 0,4 x 2 = 0,8 speed of target.
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I still use the 3m15, because it makes evaluating the target's main course more precise over a longer distance.