In the Book of Genesis, Noah's vessel built to survive the Flood is called the Ark.
Genesis describes God instructing Noah to construct the vessel before sending a catastrophic flood. Noah, his family, and selected animals enter it, and the Ark remains afloat while the waters cover the land. The biblical Hebrew word used is tebah, a term also associated with Moses' basket in Exodus.
The Ark is not presented in Genesis as a ship designed for navigation. Its purpose is preservation, and the account gives construction details including compartments, a covering, and a window. Later Jewish, Christian, and Islamic traditions expand the story in different ways, while many cultures have their own flood narratives.
The phrase “Noah’s Ark” refers both to the biblical vessel and to the wider tradition surrounding it. It should not be confused with the Ark of the Covenant, a separate sacred object described elsewhere in the Bible.