I'm not sure what the technical term is for this. I'd say moored but that conjures up images of boats bobbing around in the water. Parked? Stranded? Beached?
Anyway, whatever the term is here is a yacht at Penzance harbour on a super low tide.
I was actually trying to take photos of the partial eclipse, which believe it or not was at its peak right about then. That didn't really work, so here's a picture of a boat in the sand!