if you dump something large into a corn filled silo; will it sink or float?
It might push a little corn to the edges, but basically will sit on top of the corn.
The size is not what matters. Corn in a silo can act like a liquid (like quicksand) so it is the density of the object that determines sinking vs floating. Of course if it is shaped like a boat, it will be more likely to float like a boat.
