NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Longitude by Sunset
From: Alexandre Eremenko
Date: 2012 May 7, 15:15 -0400
From: Alexandre Eremenko
Date: 2012 May 7, 15:15 -0400
Greg, > A Bris is good enough for primary navigation and would make a most > excellent lifeboat addition. Cassens-Plath sold ungraduated Bris. Graduating it (or producing with pre-assigned angles will be more expensive. > As for the > watch...well the one on the wrist > should be good enough if it is a quartz that has been checked by time > tick. The problem is HOW LONG before the lifeboat is needed, it can be checked:-) You cannot count on an average lifeboat passenger checking his wristwatch with time signals shortly before she boards a lifeboat:-) > A pub 249 style almanac (one sheet) and a trig calculator (even a slide > rule ;-) rounds out the kit. I strongly opt for a Bygrave rule instead of a calculator. Or Complete-on-board-Cel-Nav book. You cannot rely on a battery driven equipment for a lifeboat. Alex.