The framing has been added around the edges of the panels in the engine room. It is screwed and glued in place with the screw heads buried below the surface before epoxy filling and finishing.
Framing for a cupboard/wardrobe in spare space forward of the engine and the electrical panel has also been put in.
The panels have also been beaded in the manner of the traditional back cabin which will be built.
The photo above shows the port engine room door/hatch framing and beading on the adjacent panels.