The keel is being prepared for mounting. This will be the first of the three most nervous moments in the whole project.
The other two critical moments are of course first the launch, which will show if my hydrostatic calculations are correct (The question is: Will the boat float on the waterline?). Second moment is the first sailing, which will show if the keel force/sail force balance calculations are correct. Mistakes in any of these calculations take a lot of work, time and money to correct!
(By the way, beside the keel in the shot above you can see the just completed nav seat.)