My '84 boat has a permanent sole about 3/4"' thick, for comparison. The bilge inspection hatches have mitered teak over the T&H end grain.
Is that end grain on a bilge lid in the photo? If so, might suggest an answer.
I think that, if desired, my sole could be successfully covered in new T&H plywood, maybe in 3/8th as the 32-3 uses. You'd have to trim the furniture casings and the head door, but it would work as cosmetic improvement. Downside would be original foundation, probably soft.
On models like mine the sole is really, really hard to replace, which also suggests somebody laid a new top over the old.