[Alberg30] Lightning protection
helm at georgianbaysailing.ca
Fri Mar 15 07:13:45 PST 2002
There are a lot of theories about lightning protection. One of those
is that a thin, broad piece of metal on the hull is better than, for
example, the strip on the A 30. Another says that creating a link
from the stays to the water - for example, by using a battery cable
with a piece of metal welded to the wet end - can help also. Still
others suggest bonding all metal on the boat together and leading
that to a proper ground on the keel. So there are lots of opinions,
very little that is known for sure. Evidence seems to point to the
thin broad metal. Also, a lightning bolt isn't just a small jolt. If
the lead to ground isn't sturdy enough, the lightning can shoot out
and connect to other pieces of metal onboard, or even pierce the hull
in its search for ground, causing a multitude of small pinholes. You
can imagine the fun that would be. There was a tale in Gam about one
boater who suffered that fate.
You might check in Nigel Calder's books re lightning protection.
Also, the ABYC standards are worth looking at. I'll look this weekend
and see what other books address the issue and post that info later.
Have you considered prayer? As they say, there are no atheists at sea
in a storm.
>A posting to this mail group in 1999 suggested all Alberg 30's are
>lightning grounded by virtue of the stainless strip running from the
>stemhead down to about 3 feet below the waterline. It connects to
>the forestay and thereby providing a grounding from the masthead to
>Any comments as to whether this should be sufficient and what
>alternatives there might be.
>George and Kathy White
>Close Harmony # 637
>email: <mailto:salty at ns.sympatico.ca>salty at ns.sympatico.ca
>Telephone: 902 893 1080
The gods do not deduct from man's allotted span the hours spent in
www.georgianbaysailing.ca for interesting reading for sailors
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