The Unryū-class aircraft carriers were World War II Japanese aircraft carriers. Sixteen ships of the class were planned under the Maru Kyū Programme and the Kai-Maru 5 Programme. However, only three of the Unryū-class carriers were completed.

Taihō was an aircraft carrier of the Imperial Japanese Navy during World War II. Possessing heavy belt armor and featuring an armored flight deck, she represented a major departure from prior Japanese aircraft carrier design and was expected to not only survive multiple bomb, torpedo, or shell hits, but also continue fighting effectively afterwards.