Why did the Japanese have naval superiority in the Pacific?

The Japanese had the naval superiority in the pacific in need to demolish the U. S. Pacific Fleet's aircraft.

Explanation:

Yamamoto moved to the moved to the Midway in need to attack the U. S. Pacific. The Japanese had the naval superiority in the pacific in need to demolish the U. S Pacific Fleet's aircraft as they insulted the Japanese Navy during the mid - April Doolittle Rain in one of the Japan's Island as well as at the Battle of Coral Sea that occurred in the month of May.

The Japanese Navy was one of the powerful Navy of that time. Especially during the period of World War II, they made sure to be stronger just to destroy the U. S Navy.