Fort/Park class freighter
This one is from Marine Modelling plans in 1:96 scale, plank on frame, mostly in wood but with some styrene in the superstructure.
The planked hull was coated with epoxy on the inside before filling and sanding the outside (I use automotive Bondo). Once everything was fair and smooth, I applied a couple of coats of thinned epoxy to the outside of the hull and then sanded some more.
I cut the deck frames, and glued some to the hull frames. I like to have the deck removable (my hand are too big to fit into small spaces) so I planned the deck in three sections, depending on superstructure layout, etc. Some deck frames were glued directly to the underside of the removable decks.
Everything got sprayed with Tremclad grey primer, and then red oxide for the bottom and medium grey above the waterline.
I'll add more later.