Is it really possible to build a floating ship out of stone?
Yes of course it’s possible to build a ship out of stone providing you are skilled enough as a stone mason to build it such that the water it displaces is of smaller volume than the total volume of the ship. The weight of water displaced is exactly equal to the weight of a floating object. If the object is heavier than the water it displaces, it will sink. A floating ship must therefore be exactly the weight of the water it displaces, and of a volume greater than the water it displaces to show part of itself above the water line. A hollow stone structure will allow this to happen providing the stone mason can make stone walls thin enough to enclose a sufficient volume of air for adequate buoyancy.
