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Re: HMS Bounty in trouble...
I read on the "wooden boat forum" where the Bounty was reballasted recently. The 80,000 lb of lead was removed from bilge and 65,000 lb "shoe" was added (I assume attached to the exterior of the keel). I assume the calculation would show moment arm would be the same for the two ballasting methods. The coast guard did have an issue during an inspection with the ballasting calculations (for the reballasting) but they were corrected on paper. Interesting though why the ballasting change.
Here is link to the shipyard work done to make ballast change:
Shipyard Log: August 2007
"The Bounty’s current protector is Bob Hansen. When he first brought her to us in 2001, Bounty had been leaking upwards to 30,000 gallons of water an hour at her pier. Our job was to rework the hull from the waterline down. During this recent visit to the shipyard, the scope of work included: Fastenings; 7,000 trunnels (locus wood dowels)
Keel: 54,000 lbs lead
Not sure why the difference between 54k lead and reported 65k lead. I assume the internal lead was removed and then a lead shoe attached to outside of keel.