Ventilated

John has opened up the hull at the stern where we found the soft planking. The water had indeed been coming in from under the mizzen runner backing block. The rot was quite localised, but unfortunately has affected the rib at the transom, so he has had to start cutting that out and will scarf in a new section. Of course, to get the bad inner planking out involved taking more outer planking out, and so it goes...

It's all a bit annoying, as it could of been easily dealt with when the transom was rebuilt, but at least it hasn't turned out to be a major job.

You can see the partially removed rotten top of the rib on the right hand side.