Yes, the "Super Carrier" did take place. The Japanese always had an infatuation with size, and had this idea that "bigger was always better".
So this is what this article is all about....to develop the "biggest & baddest Carrier" Well some will say they "Japanese" did just what they set out to do....but ....and "Yes" there is a "but". The Japanese found out that size of a ship does not guarantee that it can and will control the seas.
The Japanese had their idea and thoughts crushed by the USS Archerfish (SS-311)....
Give it a read I think you will find it extremely interesting