The bottom of a ship made of iron is hollow and wide. When he landed in the water, the ship removed a lot of water. As a result, the weight of the water removed from the ship is more than the weight of the ship. The weight of the water removed by the part of the ship that sinks is equal to the weight of the ship. The rest of the ship floats in the water. So the weight of the water removed by the ship is much more than the weight of the ship so the ship floats in the water.