Unless you know for sure it is epoxy, my guess is that someone who would put in a fancy flooring
like that, would also use gymnasium varnish
on it. Epoxy degrades from UV, and enough UV would get in through the hatch
and port lights to bother it, so I doubt it is epoxy, although it may have been epoxy sealed prior to varnishing.
Me, I'd try cleaning
it, first and see what happens. If you want to re-finish it, consider using varnish
stripper, it might lift
off the paint
and epoxy, with the varnish. You'll have to scrape and hand sand the corners. We have a friend who filled the tool dings with clear epoxy, and planed it smooth. Got lovely smooth finishes. A word of caution. Another mate did 12 coats of varnish on the cabin sole
of his I-36, and it was slick as anything when wet. It was great to look at, but.....consider thinking about how people's boat
shoes or wet bare feet will slip, and think up a way to introduce non-skid in a regular pattern that will be unobtrusive. It is rare to have non-skid below, but two very nice boats we've known had a variant: one, the whole sole was unfinished teak
; the other, the holly was left standing proud a bit on a teak and holly sole.