How naval treaties constrained deterrence

What was the worst naval defeat or setback suffered without a shot being fired?

The naval treaty system, because it sharply restricted British and American flexibility, deterrence, and industrial preparedness.

Defeat without battle can take the form of lost strategic options rather than a sunk fleet. In this interpretation, the naval treaties constrained both the United Kingdom and the United States in their ability to manage or deter conflict. Their rules limited freedom of movement at the moment when both powers needed reserve capacity and adaptable construction plans. The agreements did not preserve enough industrial and legal room for rapid expansion if the security environment deteriorated.