It’s time to think about the deck. Here is my foot, taking a very scientific measurement. The deck planks, caulking included, are a little over two shoe lengths. That’s… um, (multiply by the scaling factor, carry the three), how wide?
Better yet, I’ll consult the appendix in the Schooner Sultana book. The appendix says the deck planks are 5 inches wide. At 1:64 scale, that’s about 2mm. I’ll be using 1/16″ x 1/16″ strip for the deck planks, which is close enough.