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Originally Posted by FLank_Sinatra
If I use this will it tell me the ship length in meters? by using the ship length / by time to cross the scope x 2 I get the speed in knots ex:
135meter length/53 seconds = 2.5 Meters per second x 2 = 5 knots.
How can I do this with feet instead of meters if it doesn't work?
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If you're using the Imperial system with Feet... here's what I use:
Divide as per usual... length in Feet/time.
Then
multiply by 0.6 - that will give you approximate knots. As always either be heading right at them or not moving for best results.