New Living Translation
Leave an 18-inch opening below the roof all the way around the boat. Put the door on the side, and build three decks inside the boat—lower, middle, and upper.

American Standard Version
A light shalt thou make to the ark, and to a cubit shalt thou finish it upward; and the door of the ark shalt thou set in the side thereof; with lower, second, and third stories shalt thou make it.

Berean Study Bible
You are to make a roof for the ark, finish its walls a cubit from the top, place a door in the side of the ark, and build lower, middle, and upper decks.

Douay-Rheims Bible
Thou shalt make a window in the ark, and in a cubit shalt thou finish the top of it: and the door of the ark thou shalt set in the side: with lower, middle chambers, and third stories shalt thou make it.

English Revised Version
A light shalt thou make to the ark, and to a cubit shalt thou finish it upward; and the door of the ark shalt thou set in the side thereof; with lower, second, and third stories shalt thou make it.

King James Bible
A window shalt thou make to the ark, and in a cubit shalt thou finish it above; and the door of the ark shalt thou set in the side thereof; with lower, second, and third stories shalt thou make it.

World English Bible
You shall make a roof in the ship, and you shall finish it to a cubit upward. You shall set the door of the ship in its side. You shall make it with lower, second, and third levels.

Young's Literal Translation
a window dost thou make for the ark, and unto a cubit thou dost restrain it from above; and the opening of the ark thou dost put in its side, -- lower, second, and third stories dost thou make it.

Genesis 6:16 Additional Translations ...