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From: H. Russ Hughes (no email)
Date: Tue Dec 02 2003 - 18:03:04 EST
Reference: Lightning!
Keith
That was a very good write up on lightning. The only thing I might add is that
a metal sail boat mast should be bonded to a ground connection in the water. I
read an article on a lightning strike on a small sailboat with an aluminum
mast in one of the news stand boating magazines a few years ago. The mast
wasn't bonded to a ground outside the hull. The lightning bolt blew a hole
through the fiberglass hull seeking a ground connection with the water, and
the boat sank. There was a photograph of the hole through the hull.
There was another article in a similar boating magazine about a sail boat
anchored off the coast of Chile that was struck by lightning. Most all of the
electronics and a good portion of the boats electrical system were damaged. A
spare VHF radio that was stored in a surplus ammunition box survived.
Even a close by lightning strike can induce damaging voltages in electronic
equipment and the boats wiring. It doesn't take a direct hit to do this. I
have suffered damage to some of my boats electronics on three different
occasions, because of nearby lightning strikes, and we have very few
lightning storms where I live.
Russ Hughes
Slo-N-Easy
Richland, Wa.
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