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Old 06-22-2020, 12:01 AM   #10
Silent Hunter
Join Date: Dec 2004
Location: AN9771
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Originally Posted by Krellian View Post
3. We know (from a slide rule that I'm still looking for) that a 185 meter course turning 90 degrees at 3 knots gives us a 185 meter quadrant which, gives us a radius of 117 for that quadrant. (Would be nice to be able to calculate this using just knots and the rudder)

I believe I have left a procedure in here somewhere to calculate the turning radius with attackdisk/sub-buddy app. No need for speed or rudder deflection, just odometer movement in the turn and the angle of the turn. And a magical mark on the time-disk representing 'degrees per radian': 57.3 seconds (on the beige scale) or 573s/ 9m33s on the white scale.

Found it:

Last edited by Pisces; 06-22-2020 at 12:10 AM.
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