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Lightning protection #31762
03/25/04 08:04 AM
03/25/04 08:04 AM
Joined: Sep 2003
Posts: 270
Nepean (Ottawa) Ontario Canada
Frozen Offline OP
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Frozen  Offline OP
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Joined: Sep 2003
Posts: 270
Nepean (Ottawa) Ontario Canada
Any suggestions on how to protect the boat/mast against it?

I normally leave the mast up when it is beached


Cheers
Alan F

Tiger
-- Have You Seen This? --
Re: Lightning protection [Re: Frozen] #31763
03/25/04 09:52 AM
03/25/04 09:52 AM
Joined: Oct 2002
Posts: 606
Maryland
Kris Hathaway Offline
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Kris Hathaway  Offline
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Joined: Oct 2002
Posts: 606
Maryland
Boat needs to be grounded to reduce damage. The article http://www.cdc.gov/nasd/docs/d000001-d000100/d000007/d000007.html is informative. Research suggests that grounding an object does not increase the possibility of a lightning strike but I am skeptical. However, providing an easy method for the strike to reach the ground is better than having your fiberglass cat destroyed like the one for sale on ebay.

Kris
Nacra 6.0NA


Kris Hathaway
Re: Lightning protection [Re: Kris Hathaway] #31764
03/25/04 10:02 AM
03/25/04 10:02 AM
Joined: Oct 2002
Posts: 606
Maryland
Kris Hathaway Offline
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Kris Hathaway  Offline
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Maryland
Here is the pic.

Attached Files
31789-F_4803_35086.jpg (148 downloads)

Kris Hathaway
Re: Lightning protection [Re: Kris Hathaway] #31765
03/25/04 10:04 AM
03/25/04 10:04 AM
Joined: Sep 2003
Posts: 270
Nepean (Ottawa) Ontario Canada
Frozen Offline OP
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Frozen  Offline OP
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Joined: Sep 2003
Posts: 270
Nepean (Ottawa) Ontario Canada
Thanks

Excellent info.

So is a 6 to 8 "ligtning rod on the, (when on the beach) top of the mast and a wire path to ground from the bottom of the mast a useful item?


Cheers
Alan F

Tiger
Re: Lightning protection [Re: Frozen] #31766
03/25/04 12:09 PM
03/25/04 12:09 PM
Joined: Dec 2002
Posts: 53
Jackson, MI
TheSkier Offline
journeyman
TheSkier  Offline
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Joined: Dec 2002
Posts: 53
Jackson, MI
There was some talk about cats and lightning before on this forum wile sailing. There was some disagreement about using a grounding wire. If you do a search for it, you should be able to find it.

Here is a link to the start of a thread
http://www.catsailor.com/forums/sho...amp;Main=22608&Search=true#Post22608

Mark Colby
1973 H16
Jackson, MI

Last edited by TheSkier; 03/25/04 12:12 PM.
Re: Lightning protection [Re: TheSkier] #31767
03/25/04 01:06 PM
03/25/04 01:06 PM
Joined: Sep 2003
Posts: 270
Nepean (Ottawa) Ontario Canada
Frozen Offline OP
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Frozen  Offline OP
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Joined: Sep 2003
Posts: 270
Nepean (Ottawa) Ontario Canada
Mark You're right.

I had tried a search before but did not reset the time frame that the search defaulted to.

Thanks


Cheers
Alan F

Tiger
Re: Lightning protection [Re: Frozen] #31768
03/25/04 01:09 PM
03/25/04 01:09 PM
Joined: May 2002
Posts: 3,114
BANNED
MauganN20 Offline
Carpal Tunnel
MauganN20  Offline
Carpal Tunnel

Joined: May 2002
Posts: 3,114
BANNED
Not to suggest alternative ideas, but has anyone ever thought of putting a ... uhh.. rubber... uhh... err... condom... over their mast ?

Re: Lightning protection [Re: Frozen] #31769
03/25/04 01:39 PM
03/25/04 01:39 PM
Joined: Apr 2002
Posts: 349
Fort Loramie, Ohio
jmhoying Offline
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jmhoying  Offline
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Joined: Apr 2002
Posts: 349
Fort Loramie, Ohio
Here's a photo of my H16 getting hit by lighting.
[Linked Image]
Or maybe not.
Jack


Jack Hoying Fort Loramie, Ohio
Re: Lightning protection [Re: jmhoying] #31770
03/25/04 03:00 PM
03/25/04 03:00 PM
Joined: May 2002
Posts: 3,114
BANNED
MauganN20 Offline
Carpal Tunnel
MauganN20  Offline
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Posts: 3,114
BANNED
needs more fireworks Jack :P

If you're gonna go for the photoshop, gotta make it unbelievable :P

Re: Lightning protection [Re: MauganN20] #31771
03/25/04 06:16 PM
03/25/04 06:16 PM
Joined: Oct 2002
Posts: 82
Minneapolis, Mn
Wrinkledpants Offline
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Wrinkledpants  Offline
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Joined: Oct 2002
Posts: 82
Minneapolis, Mn
The best way to keep your boat safe is on a trailer with a rubber tire or two under the tongue. If your boat isn't grounded, it will be less likely to be struck. If that isn't possible, then maybe a lightning rod on top would work. It would have to be very pointed and have a substantially strong conduit running to the ground. Insulated copper is good and readily available. Just remember, lightning is an imbalance in charge in the atmosphere. So it's looking to get to the ground where it can be disappated radially. Round insulators are unlikely to get struck. If you actually look at accident reports involving lightning, you'll notice that the strike wasn't at the highest object. Most sailboats are struck at rigging points where there are pointed objects. Not usually the very top of the mast. Its funny a condom was brought up because that is the exact shape that you would need to be completely safe...no pun intended. Even setting your boat on tires would help some. Hope this helps!

Reid

Re: Lightning protection [Re: Wrinkledpants] #31772
03/25/04 06:55 PM
03/25/04 06:55 PM
Joined: Nov 2002
Posts: 5,558
Key Largo, FL & Put-in-Bay, OH...
Mary Offline
Carpal Tunnel
Mary  Offline
Carpal Tunnel

Joined: Nov 2002
Posts: 5,558
Key Largo, FL & Put-in-Bay, OH...
So would a Hobie bob on the top of your mast help to prevent it from being struck by lightning?

Re: Lightning protection [Re: Frozen] #31773
03/26/04 02:14 PM
03/26/04 02:14 PM
Joined: Dec 2002
Posts: 264
Neb
flounder Offline
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Posts: 264
Neb
No offense to anyone on the board, but lightning is so powerful and so random that only luck will protect your beachcat.

Just drop you mast if you see bad weather. If you are out sailing in bad weather... well you are just asking for trouble. CompTips, condoms, big grounding poles aren't going to help. If lightning hits your boat, something is going to get damaged. Just feel good that you weren't around when it happened.

My insurance covers "acts of "god". I say if there is a "god" and it wasn't to make my mast glow in the dark, it can have it.

Re: Lightning protection [Re: flounder] #31774
03/26/04 02:51 PM
03/26/04 02:51 PM
Joined: Nov 2002
Posts: 5,558
Key Largo, FL & Put-in-Bay, OH...
Mary Offline
Carpal Tunnel
Mary  Offline
Carpal Tunnel

Joined: Nov 2002
Posts: 5,558
Key Largo, FL & Put-in-Bay, OH...
There have been several threads about lightning on this forum, and I don't recall any incidents being reported of a beach cat ever being hit by lightning while the boat is on the water -- only on land.


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