Hello everyone -- I'm finally getting some more work done. I'm attaching a PDF document that explains the stern section armature parts and how they fit together, and another one for the center span. Hopefully they will help.
32buds: I think 3mm acrylic sheet is sold here in the US as 1/8, so you should be good. Jedi Dade, the 1/32 pieces are really very simple -- all basic rectangles. You could probably cut them yourself out of any compatible transparent plastic like sheet styrene.
Here are the documents: