PLEASE do some homework and don't rely on your assumptions.
Genesis 6:14-15 Make for yourself an ark of gopher wood; you shall make the ark with compartments, and cover it inside and out with pitch. 15 This is how you shall make it: the length of the ark
shall be three hundred cubits, its width fifty cubits, and its height thirty cubits.
A cubit is something between 18 and 21 inches, so the ark was something around 450-525 feet long. That's a
lot bigger than a basketball court.
Here's a Christian website with masses of information on the ark and other Bible-related issues:
Answers in Genesis