Why postwar supercarriers strain Panama Canal limits

Can postwar supercarriers fit through the Panama Canal?

Generally no: their dimensions create serious Panamax constraints, and canal transit is not a routine option for the largest carriers.

The question links aircraft-carrier size to the geography of global deployment. Postwar supercarriers do not fit comfortably within Panama Canal limits. Even current ships face Panamax constraints, and the exchange leaves unclear whether one has made a recent transit. Naval architecture can close off strategic movement options even when a ship has worldwide endurance.