From Trekipedia
Enlisted
Junior Enlisted
Able Seaman
Seaman
Seaman First Class
Noncommissioned Officers
Petty Officer
Chief Petty Officer
Senior Chief Petty Officer
Master Chief Petty Officer
Officers
Junior Officers
Ensign
Lieutenant, junior grade
Lieutenant
Field Grade Officers
Lieutenant Commander
Commander
Captain
Flag Officers
Commodore
Rear Admiral, lower half
Rear Admiral
Rear Admiral, upper half
Vice Admiral
Admiral
