LaHaye and Morris tell us that Noah and his three sons could have built the entire thing by themselves in a mere eighty-one years (p. 248).

When was Noah's Ark in the Bible?

Noah's Ark (Hebrew: תיבת נח‎; Biblical Hebrew: Tevat Noaḥ) is the vessel in the Genesis flood narrative (Genesis chapters 6–9) through which God spares Noah, his family, and examples of all the world's animals from a world-engulfing flood.

How many years Noah build the Ark?

Others, such as the medieval commentator Rashi, held on the contrary that the building of the Ark was stretched over 120 years, deliberately in order to give sinners time to repent.