How First World War damage control improved

Which countries had the best and worst damage control in the First World War?

The panel identifies the United States as the weakest and Britain as the strongest, while noting that British practice improved markedly during the war.

The answer places the United States at the weaker end of the comparison and Britain at the stronger end. British practice changed markedly during the conflict. Important early misunderstandings gave way to a much better grasp of damage control by the war's end. The ranking therefore describes a wartime learning curve as well as a comparison between navies.