How many aircraft carriers did japan have at the beginning of world war 2?
By the start of the war with the US in 1941, Japan had 9 carriers. Interestingly, Japan pioneered in the building of aircraft carriers. Today, the U.S. has 12 carriers, the Royal Naval has 3, and there are a total of 9 countries that have aircraft carriers. The US and Great Britain are the only countries relying heavily on carriers.
