Actually they had 6 full sized decks (Akagi, Hiryu, Kaga, Syokaku, Soryu, & Zuikaku). The rest were light carriers (Ryujo, Ruyho, Zuyho) roughly the same size & capacity as the USS Ranger (14-16,000 tons) & the Hoshu which was the Japanese equivalent of USS Langley (7,600 tons, converted...