Most are protected through strike termination devices located high enough to
provide a "zone of protection" to the ship and its occupants.
These strike termination devices are bonded to grounding conductors that are
connected to grounding plates in contact with the water.

These systems do nothing to prevent strikes (they may actually cause more of
them) but they do dramatically reduce the chances of serious injury or
death.


Thanks Joe, that is interesting.

"CCred68046" wrote in message
...
Most are protected through strike termination devices located high enough
to
provide a "zone of protection" to the ship and its occupants.
These strike termination devices are bonded to grounding conductors that
are
connected to grounding plates in contact with the water.

These systems do nothing to prevent strikes (they may actually cause more
of
them) but they do dramatically reduce the chances of serious injury or
death.


Thanks Joe, that is interesting.

I figured all the antennas, and high points had grounding straps to the
hull. And with a 1000' ship, there would be a huge ground plane and ground
path to the water. Very low current density.
Bill

"CCred68046" wrote in message
...
Most are protected through strike termination devices located high enough
to
provide a "zone of protection" to the ship and its occupants.
These strike termination devices are bonded to grounding conductors that
are
connected to grounding plates in contact with the water.

These systems do nothing to prevent strikes (they may actually cause more
of
them) but they do dramatically reduce the chances of serious injury or
death.


Thanks Joe, that is interesting.

If you want to learn more, go to the NFPA website and take a look at the
NFPA-780 code (Standard for the Installation of Lightning Protection
Systems). The current version costs $30, but towards the bottom of the page
there is a link to the current draft of the next release. I've looked at the
draft and its almost identical. The watercraft section is towards the end,
chapter 8.

http://tinyurl.com/yqtx6