The wooden decks are a veneer with a self adhesive backing. They come as part of the add-on kit purchased separately. The wood is about 0.25 mm, but like everything else, the engineering is superb .
Best we have been able to figure is that they are gas tanks for welding etc. I'm away on vacation right now and will try and get you some more info when I return home. The color scheme you see was completely arbitrary on my part. I just did receive another set of drawings of the Missouri which shows them all in the same color. I'llsee if I can find any additional info
Thanks for your inquiry
Hi Everyone. I'm back. We took a cruise into the Caribbean and enjoyed some warm weather. We were in NYC just as the big snow storm was starting and managed to get out on time. So now I'm home and catching up on the build. These pics show the pieces of the SK-2 Radar unit, and the assembled unit.