Tartan 27' owner
Join Date: Jan 2008
Thanked 115 Times in 107 Posts
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I have my doubts as to whether Beneteau would outfit their sailboats with a microprocessor control unit/governor even if your engine is what, 65 HP? Why would they do that? It is not a car or a truck which stands a lot smaller chance of getting hit by lightning. There are plenty of dependable mechanical devices which will do the same thing (with a tiny degree of inaccuracy over a digital model) with half of the headaches.
You have the book on your engine so check it out. Does it have a 'brain' that would be vulnerable to EMP? I would doubt that on your 50' boat but I could be wrong.
I would almost worry more about lightning making a direct hit on your engine (somehow) and melting the cylinders or igniting your fuel tank. There are a lot of things you can protect yourself from but lightning is not the easiest thing to protect yourself from. There is a major debate of folks who say to ground everything (and they seem to get struck more often) and other folks who say to ground nothing and leave it all independent with a minimum of a grounding plate for the mast (located on the hull exterior). It is really more like alchemy then science at this point as people want to sell you on their ideas. Is it fun to sail through a lightning storm? No, but I have done it on an ungrounded MacGregor 26S. No one is a fan of lightning on the water except those that are trying to sell you some kind of protection from it (that is not really proven).
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen
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