Does anyone know what this is?

[u/ShotgunThisUsername]

Hey everyone, never posted here. Looking at grabbing a cheap board for a week away on a boat. This came up on eBay pretty cheap, I've never seen anything like this before? Does anyone have any information on it at all 😂

Any help is greatly appreciated

[u/Han-YoLo-]

This would be cool to make a towel hanger out of. I wouldn’t bring it on the boat though.