What single invention would be most valuable to give the Royal Navy's Director of Naval Construction in 1913?
Short answerRadar, on the assumption that a workable early set could be built and used to maintain contact at Jutland.
NotesRadar is selected when the panel is asked to take one set of invention plans to the Director of Naval Construction in 1913. Fire control is also mentioned in the initial responses. A guest questions whether contemporary industry could make even an early display, and the answer assumes a workable set could be produced. Under that assumption, radar is expected to prevent the German fleet escaping at Jutland.