World War I: Jutland. May 1916. The British Grand Fleet, unchallenged since the Battle of Trafalgar, is moored in the peaceful harbor of Scapa Flow off the north coast of Scotland. The global dominance of the British Royal Navy is seemingly assured. But this is all about to change. The Battle of Jutland between Britain and Germany was the largest naval action of all time. It was a confrontation that the British wanted. An opportunity to unleash their lethal super weapons of the day--the great ships they called Dreadnoughts--and to prove that Britain did still rule the waves. Yet, in the cold grey waters of northern Europe, the showdown ended in carnage on a scale few could have imagined. Today, the ships with their vast gun turrets and thousands of shells still litter the seabed. Now, using the latest modern science, we try to determine what went wrong. Why was Jutland so disastrous for the British Royal Navy? And could it be, that in losing the battle, they won the naval war?