Because the weight of the water that they displace is greater than the weight of the ship.
The basic reason that a ship floats is that the enclosed volume in the ship's hull is greater than the volume of water which has the same mass as the ship.
Iron doesn't float. To float it has to be lighter than water. It is heavier.
A stone has a greater density than water; a ship, less.
Surface area.
sea water is denser.
a ship
The basic reason that a ship floats is that the enclosed volume in the ship's hull is greater than the volume of water which has the same mass as the ship.
Weight of ship = weight of (displaced) water.
Iron has a higher density than water, so it sinks in water; but is less dense than mercury so it floats.
Iron doesn't float. To float it has to be lighter than water. It is heavier.
a ship floats on the water and a submarine can go underwater and on top of the water
A stone has a greater density than water; a ship, less.
Tides.
Surface area.
Sodium. Iron will float if it is a hollow structure according to Archimedes Principle that an object will float if it displaces an amount of water/fluid equal to the weight of the object. A ship will displace an amount of water equal to the weight of the ship, cargo and passengers combined.
a ship wreck is when a ship sinks and floats to the bottem of the ocean were it is filled with water and creatures of the sea.
the density of water is higher than the density of wood... & so an iron piece sinks & a ton of wood floats...