NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Tom Sult
Date: 2015 Apr 30, 22:30 -0500
Tom Sult, MD
Nautical Almanac adds a lot. Maybe Weems 1927 along with Pub 249. Must have two hand held compasses.....one cheap $ 10 USD, one hockey puck. Gotta have two hand calculators with equation sheet ( I can’t memorize all of them).
BruceFrom: Greg RudzinskiSent: Thursday, April 30, 2015 7:51 PMSubject: [NavList] Re: Backup Celestial Navigation Kit1. Ebbco and Bris.
2. Pub 249 Sun LTA. (1 page)
3. A rated 8 day aircraft dash clock. ( they are surprisingly accurate)
4. Haverersine tables for Doniol Haversine reduction w/ Ix diagram. (2 pages)
5. Paper back Trig Log tables for classic reduction.
6. Polaris Latitude Wheeler for northern latitudes.
7. Wet Notes and .7mm plastic mechanical pencil.
8. Compact protractor. (Custom T Plotter)
9. 6" Pocket Doric sliderule.
Everything is inexpensive, light weight, and fits easily into the Ebbco case. This is better than just a get home kit. For getting home all a sailor needs is a Davis MK 3 and a Sun declination table to latitude sail with (no timing needed).
Greg Rudzinski
From: Robert VanderPol II
Date: 2015 Apr 30, 15:10 -0700So what would everybody put in a package for the ultimate backup celestial navigation getup?
Basic scenario: half way across the ocean of your choice you are hit by lightning and every piece of electrical and electronic equipment on the boat is fried.
Givens:
Try to keep the costs down to encourage the hoi polloi to think this is a reasonable expenditure.
Try to keep things as simple as possible so folks won’t be discouraged from practicing once a week or so.
Try to minimize weight and volume to . . .
You all get the idea.
This is intended to get someone home or to a port where repairs can be made, it isn’t intended to be able to continue a voyage to a difficult landfall with lots of outlying dangers.