Board Thread:General Discussion/@comment-26091970-20150604000724/@comment-42.60.228.10-20150926035230

"Kadokawa never classified Taihou as anything other than an Armored Carrier　(装甲空母)"

"After talking to people I agree her rl designation should have been CV.  However, this is a game and Taihou is techincally not clasified as a CV by Developers."

http://vignette4.wikia.nocookie.net/kancolle/images/5/58/CVB_Taihou_Kai_156_Card.jpg/revision/latest?cb=20150519035633

The words on the right say "aircraft carrier".

"Afterwards, supercarriers now got CVN hull classification."

No, it's because they're nuclear-powered.

"Though I'm not sure what even distinguishes an 'attack' aircraft carrier from any other aircraft carrier"

That their job is to attack the enemy, I guess? In contrast to, say, escort aircraft carriers.