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Old 26-11-2014, 02:36   #1
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Location: Langkawi, Malysia
Boat: Seawind,Lite -38 feet
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Lightening rod

Hello, everyone! I am an aspiring Cat-sailor (she's being build as I write - delivery in April'15).
I haven't had much experience (Did a coastal skipper course a few years back) and trying to find my way around as a live-aboard single-handler).
I read the other day in this forum about a lightening strike on a boat that destroyed all fuses and some systems, and almost got the skipper who was working on his engine.
My question is: There must be a way to have a lightening and surge protection system installed at the mast which then "guides" the electricity into the water?
Has anyone experience with this? I am sure the insurance company would be happy....
Please let me know and thanks in advance for your advise.
Cheers!
Thomas
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Old 26-11-2014, 03:20   #2
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Re: Lightening rod

Simple answer is yes use heavy copper cable or webbing from the mast to a copper or bronze plate bolted to the outside of your hull and underwater. I've had times where my rigging buzzed and all the hair on my body stood up. I've also come home to ankle deep water after my boat was hit by lightning and put a hole right at the waterline and the bilge pump was blown apart. After that I added an ion dissipator. I don't know if they really work but the opening bridges all have them.
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Old 26-11-2014, 04:47   #3
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You may also want to refer: http://www.marinelightning.com/science.htm


I am not associated with the company.

Stay safe!
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