Steel is a popular material for the construction of
cruise ships and submarines. In average, it density is close to
7.85 g/mL. When compare to the density of water (1.00 g/mL, both
densities determined at the same temperature), it should be
expected that steel does not follow in water. However, cruise ships
float in water, suggesting their density is less than that of
water, while submarines sink, suggesting their density is greater
than that of water. However, the are built using the same material,
steel, as the principal building material. Explain, using the
concept of density, the observed behavior.