Relative of Titanic Victim Speaks at Memorial

The transcript describes the heroic actions of a ship's crew who voluntarily stayed in the engine rooms to keep the boat's lights on, ensuring it remained visible for potential rescuers. Despite having the chance to escape, their determination led them to continue working until the rising water claimed their lives.

What was the significance of keeping the lights on in the upper levels of the boat?

How did the actions of the stokers reflect their determination?