According to Genesis, where was the doorway placed in Noah's Ark?

According to Genesis, the doorway of Noah’s Ark was placed in the side. Genesis 6:16 instructs Noah to make an opening or doorway in the side of the vessel after describing its three levels and roof.

The side doorway is one of the few specific architectural details in the ark instructions. The passage also mentions a roof or covering and an opening associated with the upper part. English translations vary in how they render some of these terms, but the location of the door is consistently described as the side.

The text does not say whether the doorway was on the port or starboard side, how large it was, or what mechanism closed it. Genesis 7:16 later says that the Lord shut Noah in, giving the doorway a narrative role as well as a structural one.

This detail is easy to confuse with the opening or window near the top. Genesis treats those as separate features: the doorway was in the side, while the upper opening served a different purpose.