Lightning Damage.. HELP - Page 3 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #21  
Old 08-09-2011
Senior Member
 
Join Date: Jun 2010
Posts: 3,127
Thanks: 13
Thanked 15 Times in 14 Posts
Rep Power: 5
cupper3 is on a distinguished road
Quote:
Originally Posted by GaryHLucas View Post
If you live aboard and only move occasionally then this setup could be cheap insurance. Anybody got a boat to test it on?

Gary H. Lucas
If your serious about testing, I am sure there are lots of derelicts states like Florida will gladly have you use. There may also be the odd boat in a marina that hasn't paid their fees for some time.

If you do this, can you let all know what you came up with?

What a lot of people are forgetting is that lightening does not just come from the clouds to the ground, but from the ground up (positive lightening), and your method may well encourage flow of electrons through the boat, rather then dissipate them.

Just a thought.

Last edited by cupper3; 08-09-2011 at 11:34 PM.
Reply With Quote Share with Facebook
  #22  
Old 08-10-2011
Dirtboy's Avatar
Senior Member
 
Join Date: Jul 2009
Location: Florida
Posts: 732
Thanks: 5
Thanked 1 Time in 1 Post
Rep Power: 6
Dirtboy is on a distinguished road
We moved in 3 years ago and within a month one of the neighbors across the canal lost a tall palm to lightning .... it was about 400 ft away.

Last year another palm got hit, again across the canal about 200 ft away.

Monday the wife and I were having coffee when we heard a LOUD bang! My next door neighbor's old oak, about 75 ft from my boat:



Last night the wind put it in the pool:



I kinda feel like the lightning is zeroing in on my boat!

DB
Reply With Quote Share with Facebook
  #23  
Old 08-10-2011
PorFin's Avatar
Señor Member
 
Join Date: Sep 2007
Posts: 1,340
Thanks: 1
Thanked 8 Times in 8 Posts
Rep Power: 8
PorFin is on a distinguished road
Dirtboy,

400; 200; 75...

That's known in the military as "creeping fire". They haven't got you bracketed just yet, but based on the incremental corrections I'd seriously consider moving the boat away from the impending registration point.
Reply With Quote Share with Facebook
  #24  
Old 08-10-2011
dnf777's Avatar
Senior Member
 
Join Date: Jun 2007
Posts: 319
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
dnf777 is on a distinguished road
One point that can be made amongst all the confusing and contradictory data regarding lightening strikes, is the important difference between protecting "people" and protecting structure.

Caging works to protect people. No doubt about it. Its why airplanes and cars rarely have injurious strikes. Its why they lay chicken wire into composite aircraft structures that have otherwise lost their caging capability. How practical it is on boats? I don't know.

Back to the confusion for a sec.....I'm not convinced that grounding a boat does anything except offer the electrons an easy path to the ground (water), but offers no guarantee that it will take it, or if it does, that it still won't harm anything. I believe that's been stated several times here, even by those who have disagreed on other aspects.

My question (based on experience in antenna construction for Ham radios also) is will grounding increase the attractiveness of masts to strikes? After all, the argument for their effectiveness is that lightening will "prefer" the simple path to ground. I'm not saying I buy that, but it does seem that given boats are often the tallest (if not only) elevated structure (and aluminum at that) on the water, lightening strikes upon ungrounded boats really seems pretty rare. For some reason, fiberglass floating on water, even with a mast, just seems to not be very attractive. JMO. Good thread.
Reply With Quote Share with Facebook
  #25  
Old 08-10-2011
Member
 
Join Date: Jun 2006
Location: Spokane Valley WA
Posts: 65
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 9
simpsoned is on a distinguished road
Not a techie, but owner of a boat that got hit by lighting...get it surveyed and get ahold of your insurance company...then hold on for a wild ride...
Reply With Quote Share with Facebook
  #26  
Old 09-02-2011
El malabarista's Avatar
Junior Member
 
Join Date: Aug 2011
Location: St albans
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
El malabarista is on a distinguished road
I have sailed with a very capable ex RN Captain who ALWAYS threw a heavy chain overboard with the onboard end bolted to the mast. I dont know if it would work or not but it certainly made me feel better
Reply With Quote Share with Facebook
  #27  
Old 09-03-2011
Senior Member
 
Join Date: Mar 2008
Posts: 886
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 7
GaryHLucas is on a distinguished road
Chain would scare the hell out of me. All those infinitely small points of contact between two right angle cylinders is just MADE for high resistance and lots of arcing! I hope he never actually got it tested.

This reminds me of when I was a kid and my dad and I used to read Popular Mechanix and in one issue they showed how to make a battery carrying handle from a short piece of chain and two flat pieces of metal that fit over the battery posts. DUH!!


Gary H. Lucas
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
damage after impact vamuscat Beneteau 22 03-02-2013 01:52 PM
Surface Damage trisstan87 Boat Review and Purchase Forum 3 08-21-2010 08:09 PM
Boats and oil damage? utchuckd General Discussion (sailing related) 18 05-08-2010 07:59 AM
boat damage Kids4sail General Discussion (sailing related) 22 11-30-2009 01:28 PM
Lightning Damage? bentmast Boat Review and Purchase Forum 1 09-29-2009 10:52 PM


All times are GMT -4. The time now is 02:10 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.