Noah:

There are many Noah type legends using similar foundations: Christian/Jews have 2 accounts that differ on the same Noah [one is the Moses' account & the other is from the Book of Enoch]; the Chinese had Fa-he; the Mexican had one man, his wife & their children; - the Greeks had Deucalion; the Hindu had Manu; the Polynesians had eight escaping the flood; the early American Indians had one, three & eight saved on a boat; Greenland has the earth's axis tilting & all drowning except two

 

Wood is not the best material for shipbuilding.

 

There are more animals on that wooden ship than in any modern day zoo: one might wonder why God would instruct Noah to have an equal amount of males & females: what farmer or rancher in his right mind would keep so many territorial battling males, 7 bulls, 7 roosters & a host of other dominating males, confined to one dwelling - these combating males could destroy a battleship

They are not on that ark for 40 days & nights of God's angry rain, but a year & ten days - Gen.7: 11, Noah's 600th year, 17th day of the 2nd month, to Gen.8: 13 & 14, Noah's 601st year, the 27th day of the second month; thus the animals would have been in very poor shape once they landed, unless they got regular exercise - how were the unfathomable thousands of animals exercised regularly by 8 people;

& of course there is the food problem; the amount of non-spoilable food would be enormous - not just for the voyage of all these occupants, but for a very long time after landing the ark as well. Non-perishable sheep burgers for the Noah family alone, 3 times a day, would amount to well over 9,000 for that trip. A massive amount of fresh water is needed, not just for all the inhabitants, but also for a great many animals which must live in fresh water [like hippos] whose water living quarters must also be maintained/filtered

The ark would need to be well ventilated to disperse the heat, humidity, & the waste products [the deadly methane, carbon dioxide, & ammonia].

A week = 604,800 seconds - Noah had only seven days to load the Ark [Gen. 7:4-10]. Although there must have been more than 15,900 animals boarding the ark, that number would work out to 1 animal being boarded every 38 seconds, night & day for seven straight days - no sleep.

Some must get a laugh at God's humor in this saga:

1st there are just 3 sons with their 3 spouses, plus Noah & his spouse, upon ark - Genesis 7:7&13: in the selfsame day entered Noah, & Shem, & Ham, & Japheth, the sons of Noah, & Noah's wife, & the three wives of his sons with them, into the ark

What unspeakable physical act did Noah's son, Ham, do to Noah. This very immoral act far exceeds that of Lot's incestuous acts - so horrific - that it cannot be documented by the Biblical scribes.  Noah was too intoxicated to stop Ham from performing this act, but not too inebriated to remember to curse Ham & all of his generations afterwards