Imperial Japanese Navy Aircraft Carriers 1921 45

The Imperial Japanese Navy was a pioneer in naval aviation, having commissioned the world''s first built-from-the-keel-up carrier, the Hosho. Throughout the 1920s and 1930s, it experimented with its carriers, perfecting their design and construction. As a result, by the time Japan entered World War II and attacked the United States at Pearl Harbor in 1941, it possessed a fantastically effective na...