What were the reported dimensions of Noah's Ark in Genesis?

Genesis gives Noah's Ark dimensions of 300 by 50 by 30 cubits.

Genesis 6:15 lists the Ark's length, width, and height in that order. The next verse describes a roof, an opening, and three levels or decks. A cubit was an ancient unit based broadly on the length of a forearm, so its exact modern equivalent is debated. Using common estimates, the Ark is often calculated at roughly 135 meters long, 22 meters wide, and 13 meters high, but those conversions are approximate.

The dimensions describe a large rectangular vessel rather than a conventional ship designed for speed or steering. Genesis emphasizes survival and capacity: the structure houses Noah's family, animals, and supplies. Modern illustrations may add details not specified in the text, including a sharply pointed bow or exact deck layouts.