Why can the ship float on the water?

The boat can float on the water because the water has buoyancy.

The contribution of buoyancy is that wood can float in the water and ships can sail in the sea. Buoyancy comes from the pressure difference between the upper surface and the lower surface of the object. The direction of buoyancy is opposite to gravity, which can be simply understood as: gravity should pull all objects that want to run back to the ground, and buoyancy is to help everyone leave the ground.

Extended data:

Reason:

Because the upper and lower surfaces of objects are at different depths of liquid (or gas), they are subjected to different pressures of liquid (or gas). The upward pressure of the lower surface is greater than the downward pressure of the upper surface, and the difference between these two pressures forms buoyancy. Buoyancy is closely related to the amount of liquid (or gas) discharged by an object.

Take an object immersed in liquid as an example. Because the liquid will generate pressure, and the pressure will increase with the increase of depth, there is pressure in all directions in the liquid, so the lower bottom surface of the object is subjected to greater upward pressure from the liquid, while the upper bottom surface is subjected to less downward pressure from the liquid. The pressure difference between the upper and lower bottom surfaces of the object is the vertical upward buoyancy. The pressures on both sides cancel each other out. ?

Baidu encyclopedia-buoyancy