I know Akitsumaru kai can equip green plane. However when I checked the database, I found akitsumaru original form have 0 plane count. If im not wrong, she can only equip carrier-based fighter after remodel. For akitsumaru class, I classified her original form as Amphibious Assault Ship (LHA) and her Kai as Seaplane Carrier (AVG), and placed under Seaplane Carrier /Tender page. I believe Seaplane Carrier needs to be shown under the Refittable Class section for each equipment.
Akitsumaru can equip fighters, even with a plane-count of 0. As for Seaplane Carriers, since when can they equip fighters? Can't remember Chi-sisters being able to equip them before remodeling them into CVL.
Akitsu Maru in her base form can use green planes. Here's a screenshot:
Both of her forms are classified as 揚陸(LHA) in the card art (and possible in dragonjet's database as well), which means they share the same traits (one has plane slots while one doesn't, which results in thtis strange property)
Seaplane carrier is incorrect, Akitsu can't use seaplanes, she can only use green planes which are carrier-based planes.
in japanese,揚陸=generally called landing craft. After looking up for more info, they are also groupped as transport ships, anything that transports personnels, equipments, tanks and etc. Akitsumaru was classed as landing craft, landing aircraft carrier, aircraft carrier, seaplane carrier, escort carrier and amphibious assault ship. The more exact explaination for her plane count increase is because she was made an aircraft ferry. in 1943, she was remodelled to widen her flight deck. she was groupped into auxiliary aircraft ferry(AVG)