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    Re: Backup Celestial Navigation Kit
    From: Greg Rudzinski
    Date: 2015 Apr 30, 16:23 -0700

    1. 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 -0700

    So 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.


    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.




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