Genesis was written around 1513 BCE. Most of “Modern academia” doesn’t recognize many facts; they’re wedded to naturalism, ignoring all evidence of supernatural events….therefore, of necessity they have to ascribe the writing of Genesis to a later date, and many believe it…. But not everyone.But again, the Israelites had extensive ship trade with other cultures. Asking a boat builder for some reasonable dimensions would not be difficult.
Only with denial can one ignore the obvious literary parallels between the Gilamesh flood story. It's accepted in academia that the story is a re-write, as are the creation narratives.
I’m not denying anything… they are simply accounts from different perspectives, but both describe the same event. As with most all the Flood legends, 250+
“Probably” float? Nope…Now you are actually lying. What was said was it would probably float. It didn't say "ideal"? You made that up.
They are ideal, because those ratios are similar to what modern shipbuilders of non-powered barges utilize!