The counterfactual has different consequences for Germany and the naval powers negotiating at Washington. Germany still faces the Treaty of Versailles, regardless of Agincourt's armament. The Washington naval settlement could take a different form once Britain has established an 18-inch capital-ship precedent. A larger-gun ship therefore changes the bargaining environment without freeing every state from its existing restrictions.
Notable Point · 42:14-42:27
Agincourt could change Washington, not Versailles
Versailles limits on Germany remain separate from whatever new bargain replaces the Washington Naval Treaty in an 18-inch-gun world.