Explain how ships made of steel float on water

The air that is inside a ship is much less dense than water. That's what keeps it floating

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

i believe that it is a exoplanet