NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: What is the best accuracy you can expect from a 'dip-short' table
From: Ken Gebhart
Date: 2014 Oct 21, 13:26 -0500
From: Ken Gebhart
Date: 2014 Oct 21, 13:26 -0500
On 10/21/14 12:11 PM, Gary LaPook wrote:
Ken
Sea fog obscures the horizon. Having another ship in the group pull alongside provides a waterline horizon whose distance away is determined with a rangefinder.As long we are talking about "dip-short," what was the purpose for these tables? If you are shooting a star while standing on the shore or anchored then you already know where you are, you need to know this to know the distance to the waterline you are using for reference line, The only reason I can come up with is for use in convoys where another ship is blocking the horizon below the celestial object being observed. Any other ideas?
gl
From: Greg Licfi <NoReply_GregLicfi@fer3.com>
To: garylapook---.net
Sent: Tuesday, October 21, 2014 4:31 PM
Subject: [NavList] What is the best accuracy you can expect from a 'dip-short' table
Hi all, Does anyone know what is the best accuracy you can expect from a 'dip-short' table is? There are many sources of tables (kinda like opinions) is any one better than another? Should you use an equation, and is there one particular equation that is more accurate than another? Thanks, ~Greg
Ken
