It is made of 6mm ply in the fore part and 9mm ply on the side decks and aft. The aft deck also received a 10mm mahogany reinforcement beam underneath to improve stepping on firmness.
The outer gunwhales are 40x20 mm mahogany scarfed to the length, glued and screwed in place. I've positioned them 6mm proud of the deck surface in preparation for the next phase: teak strip laying the deck.
The strips will be 6mm thick an will therefore end up flush with the gunwhale... Lots of fun ahead!