Yeoman

Yeoman is a title, the equivalent of which is used by the service organizations of many civilizations. As a Starfleet rating, yeoman is an enlisted title, a petty officer senior to a crewman. In comparison to army or military ranking systems, a yeoman's equivalent grade would depend on the petty officer class of the yeoman. A yeoman third class would be approximately equivalent to a corporal, higher grades would have the authority of a sergeant.

Starfleet uses different rates of yeoman, such as "yeoman first class", "yeoman second class", and "yeoman third class". A yeoman who is promoted beyond chief petty officer could be referred to as "chief yeoman", "senior chief yeoman" or "master chief yeoman" as they move through the grades. Likewise, a crewmember in the same job rating with the rate (rank) below that would have the full title of "yeoman crewman".