According to the commentary, she's dismantled in Taishou 13 and used as floating platform. She's then moved to JMU facility on Heisei 19.
In the bottom right panel, you can see the rectangular block between the ship and the pier. That is what's left of Amagi's hull. She's not a ship anymore, just a floating bridge.
Hm, fair enough. I just couldn't find any information about anything from the Amagi still existing. Especially her hull, which English language sources suggest was scrapped with the rest of her because it sustained damage.
For you to come here alonethen they were together forever.…or maybe notI shouldn’t?If they passed togetherCurrently, floating dock of Japan Marine UnitedThat’s not goodSeptember, Heisei 27
2015The former battlecruiser "Amagi"