Saturday 23 June 2012

Getting Down To The Business End Of Things

The team is now ripping into the major works. The hull has been opened up completely in several areas in order to deal to previously identified delignification of the inner planking. This has been caused as a result of the impressed current cathodic protection system installed on the boat, which does a great job of protecting the metal parts, but can cause "alkali attack" on wood in contact with the metal parts, causing the lignin within the wood to break down.

Looking on the right, what appears to be rot in the inner planking is not, it's the timber breaking down because of delignification. Only timber in contact with the bronze strapping in a few places has been affected. 

Opening her right up. The bronze strapping runs from deck to keel throughout the boat, tying the planking  timbers together as an extra form of structural strengthening - total overkill, but there is no way this baby is coming apart!

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