The mooring is tied to a conducting chain which is anchored into the earth.

A dock boat is usually tied with insulating lines to a wooden dock.

It's easier to pump excess charge by electrostatic induction to the moored
boat as the earth has virtually unlimited available charge and there is a
conduction path to the mast or boat. The docked boat can only redistribute
the charge available on the hull or polarize to the external field.

"Bob Crantz" wrote in message
news
The mooring is tied to a conducting chain which is anchored into the
earth.

But the boat is insulated from the chain by a rope painter. Fresh water is
moderately conductive, but not nearly as much as brine. If you have a
ground "shoe" on the outside of the hull below the waterline, the current
will be directed through it into the water and then to the Earth.

A dock boat is usually tied with insulating lines to a wooden dock.

See above.

It's easier to pump excess charge by electrostatic induction to the moored
boat as the earth has virtually unlimited available charge and there is a
conduction path to the mast or boat. The docked boat can only redistribute
the charge available on the hull or polarize to the external field.

See above. Most boats are grounded to the water. Or they should be.

Max

http://www.allteccorp.com/products/l...rotection.html

Bob,

Reading Alltec write up; they say "Helps prevent------" I don't see
prevents anywhere or do I see any concert comparison to number of
strikes for protected against unprotected.

I've heard a lot of comparison between used car salesmen and lightning
rod salesmen!

http://community.webtv.net/tassail/ThomPage

Maxprop wrote:


The principle is the same for golfers--don't stand alone in the open with a
9-iron over held aloft over your head in the thunderstorm unless meeting
your makers is chief on your list of things to do.

Nah, you reach into your bag and hold up 1 iron, not even God can hit a
1 iron.

Cheers
Marty

Nutsy,

I'm really not sure that its luck.

Far be it for me to act as an expert on lightening but I've made the
same observation. Not sure that the amount of mast disperses the charge,
where as a single mast sticking up draws the charge. Who knows? Not me.

I've seen the same thing happen when I was in a Raft-up and the boat
coming to join us was the one hit

http://community.webtv.net/tassail/ThomPage