Hood had a bit of a reputation as a wet boat, and models tend to follow suit. My first kit conversion was the Airfix 1:600 version when it first came out (a while ago) obviously a straight runner without radio. Another was the Bismark. The Hood had access via the removable main deck which always meant that there was water on board, the Bismark was obviously designed to have models made of it - the superstructure is amenable to being made removable and fitted over a coaming and was a much drier boat.
In the larger scale, Hood should be possible to fit with a coaming around the access hole, and possibly a false floor to mount everything on. Because of its great length to freeboard ratio and very fine entry, the forward deck is always going to be liable to collecting some water, so a sealed deck tat it can run off is a good thing. The after deck is also a bit of a problem area so that access to the rudder linkage will need a bit of forethought.