also thinking on this alittle more, being 2022 we have access to photos regularly, but prehapes these photos weren't publicly available I know on naval bases there signs every where saying no photography same at government contact dry docks.

So maybe alot of the reference photos and photos we have today weren't released to the public when they were taken.  Food for thought I wouldn't say ships were floating about an no one knew what was going on below the water but prehapes alot of what we know now was released to the public later and wasn't common knowledge back then.

Idk trying to think about it from all angles.