Light lines, checking out fit on the single sheet and trying to align everything.

Just a note, for anyone wondering - I've heard all the pros and cons and back and forth - this is NOT "marine grade" plywood. It is not pressure treated. It is simply standard, regular plywood. Why not the super quality stuff? Because, in my view, this is a strengthening core. It is going to be covered in resin and mat with resin and mat in between layers. Marine grade has a lower level of "voids", supposedly increasing strength. I saw what came out of this and what was suitable for the factory and it was pretty standard plywood. The costs must be kept down and my choice is - not worry about "voids" in the plywood or just have a void the size of the whole transom. $200 PER SHEET of plywood would have quickly exceeded what we paid for the whole boat in the wood alone.

The wood is going to be treated with Penetrating Epoxy Sealer in all areas where edges can be exposed and along the water side, hence any pressure-treating is only going to get in the way of that. It doesn't need to look nice - it isn't a varnished deck - so paying three times as much or more for a piece without knots is just kooky!