[Public-List] Garboard Drain

[Michael Connolly via Public-List]

Does anyone know when Whitby changed from lead ballast to iron?  Or perhaps the story was that Carl Alberg specified lead and Whitby decided to use iron?  
  
Greg, since the iron "pig" is not necessarily isolated from bilge water intrusion I would hesitate to use rock salt to prevent freezing.  I use RV antifreeze which I believe is much less reactive than chloride and iron. The chlorine ion which is present in an aqueous solution of rock salt is very reactive with iron, causing exfoliation of the iron and eventual expansion of the pig, to a far greater extent than any pure which might seep into cavity around the pig. Just a heads-up.    Michael  

----- Original Message -----

From: "Greg Bover via Public-List" <public-list at lists.alberg30.org> 
To: "A-30 List" <public-list at lists.alberg30.org> 
Sent: Monday, November 24, 2014 3:52:43 PM 
Subject: [Public-List] Garboard Drain 

I love the rare earth magnet trick, but rather than put yet another hole in 
the boat, I put rock salt in the bilge so that any fresh water that gets 
through the winter cover and into the bilge does not freeze. Since I have a 
solar panel outside the cover, the batteries are still aboard and the 
automatic bilge pump keeps the level very low. 


Greg Bover 
A-30 #114 
PENSIVE 
Gloucester 


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