That means Shiho is the size of Godzilla and all humans van be that big too. Bad example, especially since trees and birds have been shown with them, and they're not monstrously large as well.
This is especially the case with Southern Ocean War Oni's shell casings are as big as a person.
So if my guessing is correct, Yamato is Unit-13, Nagato would be Unit-02 and Bismarck would probably be Unit-00, Hiei could be Unit-08. Iowa or Tenryuu could be mark-06/12th Angel and Eva-01 well kongou is piloting her... post #2124731
But then again the 13th ain't suppose to exist, so Admiral has to have a Montana Class or Großer Kurfürst German Tier X battleship also it could be that musashi somehow got fused with Yamato.