Originally Posted by SaltyMonkey
so, the overarching question for me is how many sailors actually ground their mast
Mine is deck
stepped and grounded via the shrouds to an underwater (small) plate
Originally Posted by zeehag
you may diss me until cows come home, but bakatcha, as the stuff you spew is just as off as that which i believe,.
Bless your heart Zee but belief is not science. The science of lightning
and boats is not complete but the science of conductors and electricity pretty much is.
It is preposterous to think lightning "chooses" a grounded boat, house, the tallest mast
, the tallest person or anything else.
It might but the variation and randomness make any effort to be less or more attractive to a strike futile.
Originally Posted by colemj
A lightning ground and DC bonding should be separate. I wouldn't consider grounding lightning to a thruhull very safe.
I personally know of two boats struck without any lightning ground that blew multiple holes through their hulls and created a lot of damage (one was sinking, but they were near a lift
and hauled). I know 3 boats struck with lightning grounds that had no hull
or other structural damage. I know 2 boats on the hard
(ie, not grounded) that were struck with resultant hull
I watched a J24 sink in about 20 minutes after a lightning strike here. There was no path to ground and the charge clearly jumped out near the base of the mast and made 3 separate holes in the boat.
We've also discussed the futility of trying to dissipate the entire lighting
charge via many ground path ideas. I don't think you can attach a conductor big enough to ensure all the charge goes harmlessly to water
but hey, if I can get a large portion of it to ground that's gotta be good.
There are two ways equipment
gets fried IMO. Direct current
through say the ground system and EMP.
My house was struck a couple weeks ago. There are at least 4 lightning ground rods bonded to the electrical system
of my house. 2 modems were the only casualty and the whole house breakers tripped.