There was a lot of asbestos on ships for fireproofing.
Asbestos plus smoking is an extreme negative synergy for lung cancer.
Back when I worked on vehicle brake design, a really smart engineer always told our mechanics it was deadly to smoke and breath brake dust.
It’s liver, not lung.
He often said, "If asbestos dust gives you cancer, you're looking at a dead man."
He is in his mid 70s. Doing well so far.