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Gary
 
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Default Big boom sheeting

DSK wrote:
Gary wrote:

The board was removed early in her life as was the top 25 feet of main
mast.



For big deep heavy boats like this, the CB is mostly useful for
round-the-bouys racing. Taking it out was a good move IMHO.

... She originally had cement and steel punchings for ballast but that
was replaced 3 years ago with lead pigs.



I bet that was expensive. But it's another good move, longevity wise, as
long as the lead is insulated from the steel hull. They're not a huge
electrolysis problem together, but every little bit helps. Cast Cement
in the bilge is an awful shipmate, it's porous enough to trap water and
nasty gunk against the hull. I've sailed on a bunch of wooden boats
ballasted with cast cement, and it has it's devotees... for example,
it's easy to trim the boat to her lines as your pour it in, and it's
easy on the garboards. But it's ugly stuff most ways.

... She is much stiffer now than before. I have sailed her in both
configurations. We did a complete inclining experiment with her in
2002 and the C of G dropped almost 2 feet when the lead was put in.


Not surprising when you're talking about so many tons. I bet it makes a
big difference in her sailing characteristics too. When you say
"complete" incline test, how far over did you haul her?

They didn't incline her very far, maybe 15 degrees, but they had all
special instruments set up inside and produced a set of heeling curves
from the data.

With respect to the replaced steel, the corrosion was from the inside
out. I guess that in 1921 they didn't have great paint and
preservation of steel and the corrosion from sweating was extensive.
Now we have insulated it so it should last another 85 years.



Sounds good. I like the idea of a boom gallows too.

DSK