The deck beams are made of British Columbian Douglas Fir. We tried making some beams out of a solid timber but when we tested them they split so we had to laminate each one. Laminating is a lot of work but the result is extremely strong.
We have some more Douglas Fir for the carlins which has a slightly coarser grain, it looks like it's from further south, probably Oregon Pine.
Cutting the cabin sides for the bronze portholes. The tidy way to do it is with a router in a template.