Lightening Protection System (wooden mast) - SailNet Community
LinkBack Thread Tools
post #1 of 1 Old 03-30-2009 Thread Starter
Junior Member
Join Date: Nov 2008
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Lightening Protection System (wooden mast)

I have researched the topic, including this informative study (SGEB-17/SG071: Lightning & Sailboats).

Background: 1969 Contest 30, wooden mast, fully encapsulated lead keel, fresh water sailed.


1. Do I need an "air terminal" / antenna?

2. Since the mast is wooden, should a stay be used as the down conductor? Alternatively, should I install a down conductor on the mast?

3. If stay or mast (with appropriate down conductor used), where should the copper grounding plates be located? Outside / inside?

4. Can a Dynaplate be substituted for copper plate?

5. How should the grounding plates be attached (epoxy, fiberglass, bolted, etc.)?

6. Once grounding plates are installed, is it as simple as connecting down conductor and significant metal components (engine, tanks, etc.) to the grounding plate via #4 copper wire?

7. Should chainplates be connected to grounding plates?
captainVT is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Southern Cross 31? db27513 Boat Review and Purchase Forum 36 09-01-2016 11:48 PM
30ft Catalina BigRuss Boat Review and Purchase Forum 3 09-09-2006 05:33 PM
what mast? jrwright Boat Review and Purchase Forum 3 03-14-2004 08:19 PM
Spartite 2000 mast wedge replacement system - need info Capt.CarroleWard Gear & Maintenance 2 05-30-2001 06:01 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

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

For the best viewing experience please update your browser to Google Chrome