NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Chronometer Suggestions
From: Irv Haworth
Date: 2009 Jan 6, 14:55 -0800
From: Irv Haworth
Date: 2009 Jan 6, 14:55 -0800
Hi ALL With all due respect I think we are splitting hairs and thus starting him off on the wrong foot.. If he is just starting out he will be lucky if his early plots are within 4-5 NM of true position. After he becomes an "expert" in taking /plotting sights he will be Pleased ..or should be...if he is within about 1 NM...(and that's with a very good time keeper at his side) IFH. -----Original Message----- From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Alexandre E Eremenko Sent: January 6, 2009 1:32 PM To: NavList@fer3.com Subject: [NavList 6948] Re: Chronometer Suggestions Bill, Of course. 1 sec of time = 15" =0'2. (Same accuracy as a good sextant measurement). Alex. On Tue, 6 Jan 2009, William Sellar wrote: > > > As a beginning celestial navigator, I am wondering how much time and watch accuracy is actually required for practical navigation.� Can we predict how many miles off one would be for every second of time error? > > Bill > > > --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---