Genesis 6:15
This is how you shall make it: the length of the ark three hundred
Genesis 7:20
The water prevailed fifteen
Deuteronomy 3:11
(For only Og king of Bashan was left of the remnant of the
Treasury of Scripture Knowledge
Summary
And this is the fashion which thou shalt make it of: The length of the ark shall be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.
Cubits
Bible References
Cubits
Genesis 7:20
The water prevailed fifteen cubits higher, and the mountains were covered.
Deuteronomy 3:11
(For only Og king of Bashan was left of the remnant of the Rephaim. Behold, his bedstead was an iron bedstead; it is in Rabbah of the sons of Ammon. Its length was nine cubits and its width four cubits by ordinary cubit.)