Even a Nimitz class Aircraft carrier wouldn't be large enough to carry 2 of every animal in the world and the food/water needed for them.
And of course you know exactly how large it would have to be, how many animals it carried and how much food and water were needed. Noah wasn't called to take 2 of "every animal in the world." What is now called a species is not the same thing as a Kind. Many fewer were taken than you are likely to imagine for that reason.
I guess people could argue that the ark is better constructed and larger than a nimitz class... but those people would be deluded morons.
Well, God did give Noah the instructions.
Signed, Deluded Moron.
Thought I'd bring over some info I posted on the other thread about construction projects: