A 1930 war favors the Royal Navy's aviation lead

How would the naval balance differ if a world war began in 1930?

Britain would hold the strongest carrier position, while Germany and the other Axis powers would be much less prepared than in 1939.

The 1930 carrier balance favors Britain over the United States and Japan. Lexington and Saratoga are the principal American carriers, Japan lacks several later flight decks, and Britain holds the strongest numerical position. Germany has none of the surface fleet that made its 1939 operations possible, while Italy has not completed later reconstruction programs. Doctrine might change little. The material balance and the operations each navy can attempt would change enormously.