How would the First World War change if Germany could operate Yamato?
Short answerBritain would accelerate heavy-gun construction and use its much larger fleet, especially destroyers, to contain or swarm the exceptional ship.
NotesThe scenario grants Germany not only the ship but the resources needed to operate it, making its radar and heavy guns genuinely usable. The panel expects British intelligence to discover the threat because Germany's naval establishment was deeply penetrated before the First World War. Britain could revive its existing 18-inch gun work and accelerate a large-gun capital-ship response. Destroyer numbers and torpedo attacks would offer a practical way to offset a single dominant battleship, while Germany would still face the problem of securing oil. The result is less a simple duel than a rapid adaptation by an entire naval system.