NavList:

John,

The Umland Ageton table attached in the previous post is 15 pages ( 8 pages if using both sides). This should fit like a book mark in a Kolbe LTA which will fit in a sextant box. Hanno's single page Ageton is good also but requires mental interpolation to get 1' precision (not hard).

Greg Rudzinski

From: John Brown
Date: 2015 Jul 23, 00:30 -0700

Greg

Very ingenious, thanks.

I like your index card SR calculations and have been inspired to clean up an earlier, standard cos-vers version of mine as a kind of pro forma, copy attached.

I assume that the reverse of your index cards contains the date, time, DR position, almanac data, sextant altitude corrections etc and that these are NOT on a scrap of paper somewhere. ;-)

I do not have a bound copy of Ageton but possibly this would be about the same size as  Myserscough and Hamiltons' Rapid Navigation Tables (10.75 x 6.5 x 0.5 inches) - exactly the same physical size as Burton's 4-figure tables.  Either one will comfortably fit into my C.Plath sextant box together with Geoffrey Kolbe's excellent LTA (should I ever wish to do such a thing).

Burton is not a one trick pony, however, and a copy of the contents page is attached.  There is even a half convergency table for the  emerging Navlist interest in Ro DF bearings!

The bad news is that Burton is no longer in print.  Grab your copies while you can.

Best regards

John 

 

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