How has density and buoyancy changed since the Titanic?
Density and buoyancy are physical properties of the universe that have not changed. Even our understanding of density and buoyancy have not changed that much since the early 1900s. I have no doubt that the calculations would be very close between an engineer of our time and those of an engineer in 1912. Metallurgy has improved and new research shows that the metal used in the hull of the Titanic would become brittle when it when it was 32 degrees Fahrenheit. The Titanic did not use a double hull design, instead, it used compartments from front to back. These were not water tight at the top. If water filled the first compartments, the water could go over the top of the bulkhead to fill the compartment behind. That’s just what happened. Engineers did learn an important lesson about ship design. Perhaps metallurgy and ship design has been improved since 1912. The ship is iron. It will sink. That was no surprise to the engineers of 1912. Once the five compartments of the Titanic were breac