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O-6 Captain CAPT 
O-5 Commander CMDR 
O-4 Lieutenant Commander LCDR 
O-3 Lieutenant LT 
O-2 Lieutenant (j.g.) LTJG 
O-1 Ensign ENS
E-9 Master Chief Petty Officer MCPO 
E-8 Senior Chief Petty Officer SCPO 
E-7 Chief Petty Officer CPO 
E-6 Petty Officer First Class PO1 
E-5 Petty Officer Second Class PO2 
E-4 Petty Officer Third Class PO3
E-3 Able Crewman CWM 
E-2 Crewman Apprentice CWMA 
E-1 Crewman Recruit CWMR
Enlisted Ratings in Starfleet
From E-1 to E-3, there are actually
four subsets of the standard Crewman ranks, depending on the career path
chosen. The insignia remains the same, although the color of the
uniform will identify the crewman’s rank title, except in the case of airmen
and crewmen, who wear the same (red) division color, and firemen and constructionmen,
who wear the same (gold) uniform color. In these cases context generally
makes the rating clear.
Deck Department (Deck, Administration,
Medical, Dental)
E-1 Crewman Recruit CR
E-2 Crewman Apprentice CA
E-3 Crewman CN
Engineering and Hull Department
E-1 Fireman Recruit FR
E-2 Fireman Apprentice FA
E-3 Fireman FN
Aviation Department
E-1 Airman Recruit AR
E-2 Airman Apprentice AA
E-3 Airman AN
Construction (SeaBees, Starfleet Corps
of Engineers)
E-1 Constructionman Recruit CR
E-2 Constructionman Apprentice CA
E-3 Constructioman CN
Noncommissioned Officer Ratings
Although normally referred to as
“Petty Officer Smith” or “Chief Jones” each noncommissioned member of the
fleet has a rating, or specialty. These specialties reflect the person’s
training.
Abbrev |
Rating |
Uniform |
| AB | Aviation Boatswain's Mate | Red |
| AC | Air Traffic Controller | Gold |
| AD | Aviation Machinist's Mate | Gold |
| AE | Aviation Electronics Mate | Gold |
| AG | Aerographer's Mate | Gold |
| AK | Aviation Storekeeper | Gold |
| AM | Aviation Structural Mechanic | Gold |
| AO | Aviation Ordnanceman | Gold |
| AS | Aviation Support Equipment Technician | Gold |
| AT | Aviation Electronics Technician | Gold |
| AW | Aviation Systems Warfare Operator | Gold |
| AZ | Aviation Maintenance Administrationman | Gold |
| BM | Boatswain's Mate | Red |
| BU | Builder | Gold |
| CE | Construction Electrician | Gold |
| CM | Construction Mechanic | Gold |
| CT | Cryptologic Technician | Gold |
| DC | Damage Controlman | Gold |
| DK | Disbursing Clerk | Gold |
| DS | Data Systems Technician | Gold |
| DP | Data Processing Technician | Gold |
| DT | Dental Technician | Blue |
| EA | Engineering Aide | Gold |
| EM | Electrician's Mate | Gold |
| EN | Engineman | Gold |
| EO | Equipment Operator | Gold |
| ET | Electronics Technician | Gold |
| EW | Electronic Warfare Technician | Gold |
| FC | Fire Controlman | Gold |
| FT | Fire Control Technician | Gold |
| GM | Gunner's Mate | Gold |
| HM | Hospital Corpsman | Blue |
| HT | Hull Maintenance Technician | Gold |
| IC | Interior Communications Electrician | Gold |
| IM | Instrumentman | Gold |
| IS | Intelligence Specialist | Red |
| IT | Impulse Drive System Technician | Gold |
| JO | Journalist | Gold |
| LN | Legalman | Red |
| MA | Master-at-Arms | Gold |
| MM | Machinist's Mate | Gold |
| MN | Mineman | Gold |
| MR | Machinery Repairman | Gold |
| MS | Mess Management Specialist | Gold |
| MT | Missile Technician | Gold |
| MU | Musician | Gold |
| NC | Navy Counselor | Blue |
| OM | Opticalman | Gold |
| OS | Operations Specialist | Gold |
| PH | Photographer's Mate | Gold |
| PM | Patternmaker | Gold |
| PN | Personnelman | Red |
| PR | Aircrew Survival Equipmentman | Gold |
| QM | Quartermaster (Helmsman) | Red |
| RM | Radioman (Subspace) | Gold |
| RP | Religious Programs Specialist | Gold |
| SH | Ship's Serviceman | Gold |
| SK | Storekeeper | Gold |
| SM | Signalman | Gold |
| ST | Sensor Technician | Blue |
| SW | Steelworker | Gold |
| TM | Torpedoman's Mate | Gold |
| UT | Utilitiesman | Gold |
| WC | Warp Core Technician | Gold |
| WT | Weapons Technician | Gold |
| YN | Yeoman | Red |
