Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

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Re: Lightning at sea

From: Alexandre Eremenko (no email)
Date: Thu Oct 14 2004 - 22:16:33 EDT

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    Lisa,
    I think this is out of the scope of the list,
    but your question reminds me of another accident:
    once, when sailing in a narrow lake, my mast was
    caught between two high-voltage electric wires hanging
    across the lake:-)
    Fortunately, both the boat and the mast were made of wood...
    otherwise, I afraid, I would not be writing to you know:-)

    Alex.

    On Fri, 15 Oct 2004, Lisa Fiene wrote:

    > I distinctly remember being in a 47kt gale once. We were surrounded by
    > storm fronts, and there was much lightning and rain. As we had a
    > following sea which was not too large at the time (only about 4-5m), and
    > the wind was from the NE & blowing us where we wanted to go, we decided
    > to run with it, after double reefing. We had a plan to heave to should
    > we start to get pooped, but that never happened.
    >
    > It occurred to me at the time (among other things), that our mast was
    > the highest thing out there - thoughts of Benjamin Franklin actually
    > came running through my brain. The lightning was no longer cloud to
    > cloud, but vertical.
    >
    > Ahem, I thought.
    >
    > In this situation, as our boat is constructed of steel, if we did
    > receive a lightning strike on the mast, what would have happened?
    >
    > Would it blow through the hull, (as I know has happened on GRP and
    > timber yachts), or would it dissipate in some way as it's steel? Would
    > it possibly though still have the chance of arcing across to us if we
    > remained in the cockpit anyway, even if steel IS some kind of advantage
    > in this situation (if that's the word)?
    >
    > I guess what I'm asking is that if we're ever in that situation again,
    > what should we do:
    >
    > a) Heave to, go down below, have a shot of rum and pray for the day.
    > b) any other suggestions?
    >
    > As a complete novice in the wiles of electricity, your opinions would be
    > greatly appreciated.
    >
    > Thanks, Lisa
    >


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