What sort of finish does best under tropical conditions against uv and so on? The existing finish I'll be trying to match is high-gloss and quite deep, having filled in and rounded all inside radii quite a bit. It has lasted well, considering its age (10 years) but is beginning to show white at the base.
In the beginning, this almost sounds like you have a searail along your countertop, and the raised area carries a thick layer of this finish? I bet that in the beginning, there was some form of an epoxy layer applied on the wood. If you are saying that the boat is 10 years old, and is such a large megayacht, its also possible that an epoxy style finish simular to Stephani sp? was used and sprayed on the wood. I bet if you with your trained eye can view this at an angle and tell if this is also the case. Whether you can now do this with the complete interior in, is up for further discussion.
This product was fairly popular in that era, and was used simply because it was completely clear in color. This was a criteria for much of the wood being used when teak was being discontinued and many of the burl maples and some ash was becoming popular for inteiriors. If you can send me some interior shots to my personal mail, if thats possible, then do so.
Also if you can have access to scratch the surface of the finish, the residue should be white when you sand it. If this is the case, then you will also have a very hard surface to sand, or even strip in areas that you may end up just refinishing. Follow up if you would like by direct mail. As I do have much time and do not get on this or any other forums much anymore.