NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Log keeping
From: Greg Rudzinski
Date: 2009 Jul 28, 11:52 -0700
From: Greg Rudzinski
Date: 2009 Jul 28, 11:52 -0700
Peter, See chapter 23 of Bowditch No. 9 1977 edition THE PRACTICE OF MARINE NAVIGATION. Your questions are addressed there. The end of piloting and the beginning of the next phase of navigation is called Taking Departure and if open ocean is to be traversed then the vessels position is transfered to a plotting sheet. In the reverse it is good practice to have the point of transfer back to the chart well labeled with the go to chart number on the course track of the plotting sheet. Once back on the chart then the all important Landfall can be taken. Greg On Jul 28, 11:20�am, P Hwrote: > Suppose you are sailing across an ocean and you have been keeping track of your position using only dead reckoning and celestial, like in the old days. �Then you see land which contains your intended destination. �At some point you switch from celestial to visual in order reach your port. �At that moment you can accurately determine how far off your last celestial fix was. �My question is how were such "discontinuities of fix" marked in logbooks and on charts? �Were there any established procedures as to when you may stop carefully plotting your position and just dock at the pier by "Mark 1 eyeball"? �I suppose a similar question can be posed for when you leave port; at which point do you begin the usual navigation routines, celestial or otherwise? > > Peter Hakel --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---