After looking at Mr T,s latest instalment on the official build [and this is not a critisism of that build but my interpretation on how i will do mine] something didnt seem right about the edging strip used around the planked area. After checking in the book Anatomy of the ship Yamato [pg162] it would seem the the wooden deck area edge is a shaped steel plate incorporating the railings base and water chanel to the scuppers[ see diagram]there is also a wooden chaneling to some parts of the wooden deck but not everywhere along it.
The discrepency could arise because in parts of the drawings in the book make the waterway to the deck scuppers look like a wooden edging to the wooden deck area[ note this raised/shaped steel plate edge does not appear on the forward /rear metaled areas only along the sides of the wooden decked area].
My solution to the above [see sketch] will be to add a wooden strip to the hull edges, like Mr T,s but to the edge and add a plastic strip on top where the railings are fitted, thus leaving the water chanel and wooden chaneling to be added [where fitted].
As i have said above this is my interpretation based upon the information to hand and is not a crytism of anybody elses work official or not.
Andy

Thanks Mr T
For the clarification and yes it seems i now must add the deck edge and turret edging to my build aswell as my proposed solution, but hey its more work but will look more like the real thing as the information we have shows. I just wish the japanese wernt so compleatly dedicated in destroying all the documentaion just after the surrender.