4 holes for liquor bottles, and a bay to hold tumbler glasses, maybe? Then the door has a keyed lock to keep the hired captain sober. Oddly, you could key-lock two cabinets like this, the head and the forward cabin.

I use it to store a few spares below and cameras and the like.

We've never kept much wine onboard, mostly bringing it on with the provisions. But it would be nice to have a few good bottles onboard.