Comments by "Steve Valley" (@stevevalley7835) on "The Wrecks of Midway - Diving on IJN Akagi (Sept 2023)" video.

@readingrailroadfan7683 interesting question. The other two Amagis, Takao and Atago, had been laid down in late 1921, so, arguably, could have been completed under the treaty provision allowing conversion of ships under construction. The earthquake was in September 1923. According to a book on IJN ships I read, Takao and Atago were not stricken and broken up until April, 1924, so, under the terms of the treaty, one could have been completed as a carrier. The treaty also allowed new construction of replacements for ships lost to accident. I suppose you could argue that Amagi could be replaced under that clause by new construction from the keel up. Building the replacement to the same size as Amagi, which exceeded the treaty limit, might not be allowed.
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@toddwebb7521 iirc, they tried to scuttle Hornet, but ran out of time as Japanese forces were approaching. In Yorktown's case, they were desperately trying to save her. The Yorktown design was compromised in that all the boilers were positioned together, and all the engines were positioned together. Being dead in the water doomed both Yorktown and Hornet. If they had had staggered boiler and engine rooms, like Essex, Yorktown in particular, if only capable of 8kts, would have been long gone by the time the Japanese sub happened by.
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@napalmholocaust9093 one of the best examples is A6M5 number 61-120, restored to flyable condition, with the correct Nakajima Sakae engine, at the Planes of Fame museum in Chino, California. The Wiki entry on the Zero lists the location and status of surviving examples.
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