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    Lightning strike (was Re: CELNAV .pdf file)
    From: Frank Reed CT
    Date: 2003 Dec 29, 17:12 EST
    Fred Hebard wrote:
    "Electromagnetic shock can still knock out most electronic devices, as I
    understand it.  Celestial is a good backup."

    Maybe someone on this list will know the answer to a question that has come up occasionally. Is there a "lightning-proof safe"? If you're sailing across the Atlantic, and your boat is struck by lightning, you may lose all your electronics. Can you keep a spare handheld GPS in an insulated metal case? Do they market such things? More generally, what's a safer navigation backup: a sextant, almanac, and set of sight reduction tables, or two or three (appropriately secured) spare GPS receivers?

    Frank E. Reed
    [X] Mystic, Connecticut
    [ ] Chicago, Illinois
       
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