Non-Commissioned Officer (Enlisted) Ranks and Ratings

Grade	Starfleet Rank	Starfleet Insignia
E-9	Master Chief Petty Officer
E-8	Senior Chief Petty Officer
E-7	Chief Petty Officer
E-6	Petty Officer 1st Class
E-5	Petty Officer 2nd Class
E-4	Petty Officer 3rd Class
E-3	Crewman
E-2	Crewman Apprentice
E-1	Crewman Recruit

Note: The images and information reflect the current enlisted ranks and insignia used within Starfleet.