NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Regarding fix bearings
From: Clive Sutherland
Date: 2008 Dec 21, 16:55 -0000
From: Clive Sutherland
Date: 2008 Dec 21, 16:55 -0000
George There is a description of these bearings in Bowditch Vol 1 (my copy is 1984) in the Piloting section para 1012 (circa page 301) and a more detailed example in Vol 2 Chap 5 Distance \calculations,in my copy (1981)this is on page 472. I can send copies if you are interested. Clive > -----Original Message----- > From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf > Of George Huxtable > Sent: 20 December 2008 20:15 > To: NavList@fer3.com > Subject: [NavList 6780] Re: Regarding fix bearings > > > > inuik@yahoo.com, or A-08, wrote the posting copied below. > > That idea sounds original, simple, and interesting. > > Tell us more, A-08. > > George. > > contact George Huxtable, at george@hux.me.uk > or at +44 1865 820222 (from UK, 01865 820222) > or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. > > > ----- Original Message ----- > From:> To: > Sent: Saturday, December 20, 2008 2:12 AM > Subject: [NavList 6773] Regarding fix bearings > > > | > | Regarding fix bearings: A convenient practice of taking two bearings at > one landmark is to take the first bearing at 45 deg, then second bearing > is > taken off beam (90 deg). In this case distance off beam is equal distance > traveled. > | There are also few so-called "magic" angles which play the same trick: > upon using them distance travelled is equal distance off. > | > | I wrote a formula which permits for the first bearing chose any angle > you > want and then calculate the angle for the second bearing which, as a > result, > equals distance travelled to distance off. > | > | I think it gives some flexibility in bearing taking and especially in > calculating distance off. > | > | Respectfully, > | > | A-08 > | > | > | ------------------------------------------ > | [Sent from archive by: inuik-AT-yahoo.com] > > > > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.176 / Virus Database: 270.9.19/1857 - Release Date: > 12/19/2008 10:09 AM --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---