I've run into a tricky issue on Niobe (1897 Protected cruiser, later first ship in the Canadian navy).
Was the boat deck planked?
Contemporary photographs are just too indistinct to be sure. The best shot that I have, from Niobe's crows nest' illustrates the problem. Close ups of the boat deck are rare, but seem to show plating or matting which might just be temporary around boats that were being worked. The two pics from the extensive library (300 or so) of Niobe photographs illustrate this.
Contemporary builders models invariably duck the issue by showing plain unvarnished wood (not planked) as if they were not sure how the ship was to be finished. The attached pics of the 'Good Hope' model at Duxford illustrate this uniform practice.
So does anyone know (or have better evidence than mine) as to how these large expanses of deck would have looked. One thing that is for sure is that they would not have been a continuous sheet of plywood as in the builders models!