Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
CCred68046
 
Posts: n/a
Default Ligntning

Does anyone know how those big ocean liners are protected from lightning
strikes?
  #2   Report Post  
JAXAshby
 
Posts: n/a
Default Ligntning

Does anyone know how those big ocean liners are protected from lightning
strikes?


same way as any other boat, they pray a lot.

absolute truth is absolutely nothing is more effective than prayer.


  #3   Report Post  
Joe
 
Posts: n/a
Default Ligntning


"CCred68046" wrote in message
...
Does anyone know how those big ocean liners are protected from lightning
strikes?


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.



  #4   Report Post  
CCred68046
 
Posts: n/a
Default Ligntning

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.
  #5   Report Post  
Calif Bill
 
Posts: n/a
Default Ligntning


"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




  #8   Report Post  
Joe
 
Posts: n/a
Default Ligntning


"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


Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT +1. The time now is 05:09 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 BoatBanter.com.
The comments are property of their posters.
 

About Us

"It's about Boats"

 

Copyright © 2017