Comment by generalizations

Continuing to stick with the Cambridge Dictionary.

> ((a piece of (the set of necessary tools, clothing, etc. for a particular purpose) with (some; an amount that is not exact but is fewer than many) moving parts that uses power to do a particular type of work) used for transporting people or goods)

Yup, that's technically a rowboat - as long as it has oars included (whether or not they're physically attached: "set of"). Take the oars out of the equation, and it's not a machine anymore...just a piece of a vehicle (like how a tire isn't a car).