NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2012 Dec 16, 21:24 -0800
| I would recommend an aviation type of slide rule for use in the cockpit for time-speed- distance computations as well as correcting for current. I like the circular MB-2 but the E6-B provides a surface for drawing vector diagrams which may be easier to use for current problems. I posted about these before: http://fer3.com/arc/m2.aspx?i=105458 Something I didn't mention in that prior post was the use of the drift correction window. Look at the third picture in that post and identify the "drift corr." window in the center. To use this you line up on the outside scale of the computer the distance off course with the distance traveled on the inner scale and the number of degrees of drift appear in the window. For example, if you are off course by 1.8 NM after traveling 11.5 NM ( 18 NM after 115 NM, etc) then you have been drifting 9 degrees as shown in the window. In fact, the drift is the same 9 degrees for any combination of the inner and outer scale as set. The E6-B has the same scale, http://www.rekeninstrumenten.nl/pages%20and%20pictures/12081.jpg Also see: http://fer3.com/arc/m2.aspx/Set-drift-LaPook-nov-2011-g17393 gl --- On Sun, 12/16/12, Greg Rudzinski <gregrudzinski@yahoo.com> wrote:
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