Jamieson, Fausset & Brown, on Gen 6:15

“And thus shalt thou make it: The length of the ark shall be three hundred cubits: the breadth of it fifty cubits, and the height of it thirty cubits.”

“And this is the fashion--According to the description, the ark was not a ship, but an immense house in form and structure like the houses in the East, designed not to sail, but only to float. Assuming the cubit to be 21.888 inches, the ark would be five hundred forty-seven feet long, ninety-one feet two inches wide, and forty-seven feet two inches high.”

Imported from an open dataset — not yet checked against the printed edition.