She's cleaning herself. Spit and her own talons. Not that there isn't water around but what's she going to do? Get close to the edge of the boat so some slave can 'accidentally' bump her into the water?
I forgot, over a week ago I mentioned a daemon radomizer I was in the process of making, then just straight up forgot about. Welp, here it is. It's still very much a WIP, but it's got the basics down.