Noah’s Ark was the wooden vessel in which Noah, his family and all species of land animals were preserved during the great flood that destroyed the earth (Genesis 6: 14-8: 19 ). Even though it was built by Noah, the Ark's designer was God Himself, who gave Noah the exact specifications (Genesis 6:14-16). The Ark stood at 450 feet long, 75 feet wide and 45 feet high and was made of "gopher" wood. Its inside and outside were smeared with pitch (possibly to keep it waterproof), and it had three internal compartments (lower, middle and upper decks), a roof, and one entrance on the side. The Ark had a ratio (length x width x height) of 30 x 5 x 3, which according to ship-builders is the optimum design for stability in rough seas. The Ark, as designed by God, was virtually impossible to capsize; it would have had to be tilted over 90 degrees for that to happen!