NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: NAO reduction table
From: Dan Hogan
Date: 1998 May 03, 3:34 AM
From: Dan Hogan
Date: 1998 May 03, 3:34 AM
Paul: I don't know why the USPS picked NAO tables. There are much better short tables. I have a collection of Nav inspection and short tables. I have used 211, 214, 229, 249. And I have just acquired a complete set of H.O. 218, not to mention those tables by Weems , Davis, Pepperday and, Schlereth(Sight Reduction Tables for Small Boat Navigation). I have found the inspection tables, 229, 214,, 249 etc, too big and too many volumes to carry comfortably in a small boat. 249 is prone to the pages tearing out when damp. I looked for a table that was about the size of the Nautical Almanac a single volume AND worked from the DR position. I also wanted a minimum of table re-entries to solve for "a" and "Zn". What I use at sea is HO 208(Self-Contained Celestial Navigation with H.O. 208, John S. Letcher, 1977, International Marine, ISBN 0-87742-082-3). I plot on a college ruled notebook, actually a "record" type account book, that fits next to the Almanac. Always from the DR position. I use a calculator for backup, since I am prone to dropping them at sea. P.S.: Looks like the roninhouse server finally spit out its messages. Dan Hogan WA6PBY "Gacha" Catalina 27 dhhogan@concentric.net =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@ronin.com: =-= =-= navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
