Compartmentalization buys time

Time is the central value of damage-control design. Titanic's transverse bulkheads did not reach high enough, and the arrangement lacked longitudinal barriers and a watertight deck capable of stopping progressive flooding. More complete subdivision would confine water, preserve working spaces, and give pumps and crew a manageable casualty instead of an open path through the ship. The disaster is connected with later expectations for double bottoms, more hull subdivisions, properly planned pumps, and formal damage-control and safety training. None of those measures guarantees survival, but together they create time in which survival becomes possible.