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COLOUR CODING & RANK INSIGNIA


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OFFICER
Commissioned officer ranks. 
All ranks in Starfleet are addressed by the title of the rank, except Fleet Captain, Lieutenant Commander and Lieutenant (Junior Grade).
By ranks junior to the rank being address: Fleet Captain is addressed simply as 'Captain' or 'sir', Lieutenant Commander is addressed as 'Commander' or 'sir' and Lieutenant (JG) is addressed as 'Lieutenant' or 'sir'.
By ranks senior to the rank being address: Fleet Captain is addressed as 'Captain', Lieutenant Commander is address as 'Commander', Lieutenant (JG) and below (ie junior officers) are addressed either by their rank (Lt(JG) addressed as 'Lieutenant') or can be addressed as 'Mister and the officer's name'. Any rank above Lt(JG) addressed as 'Mister' can be considered an insult to the officer's rank as they are being addressed as a junior officer.
 RANK
INSIGNIA
ABBREVIATION
---Fleet Captain
FCapt.
---Captain
Capt.
---Commander
Cdr.
---Lieutenant Commander
Lt. Cdr.
---Lieutenant
Lt.
---Lieutenant (Junior Grade)
Lt(JG).
---Ensign
Ens.
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WARRANT OFFICER
Warrant Officers are non-commissioned officers (NCOs), who have advanced through the enlisted ranks to at least Master Chief Petty Officer (MCPO). They may then apply for a Starfleet Fleet Admiral's Warrant, upon receipt of which and a short test, they will become a Warrant Officer. All warrant officers, including Chief Warrant Officers are addressed as 'Warrant Officer' or 'Warrant'.
 RANK
INSIGNIA
ABBREVIATION
---Chief Warrant Officer 1st Class
CWO1
---Chief Warrant Officer 2nd Class
CWO2
---Warrant Officer 1st Class
WO1
---Warrant Officer 2nd Class
WO2
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NCO & ENLISTED
Non-Commissioned Officers and Enlisted Personnel are those choosing to join Starfleet in the trades and therefore not going through Starfleet Academy. These can range from an engineer to a command specialist. They spend 3 months at the Starfleet Recruit Training Centre on Beta Myamid III, before entering the enlisted ranks of crewman apprentice.
Crewman Recruit is addressed as 'Recruit', Crewman Apprentice as 'Crewman'. All Petty Officers are addressed as 'Petty Officer' or 'PO'. Chief Petty Officers, Senior Chief Petty Officers and Master Chief Petty Officers (inc. MCPOSF) are addressed as 'Chief Petty Officer' or simply 'Chief'.
 RANK
INSIGNIA
ABBREVIATION
---Master Chief Petty Officer of SF
MCPOSF
---Master Chief Petty Officer

---Master Chief Petty Officer
MCPO
---Senior Chief Petty Officer
SCPO
---Chief Petty Officer
CPO
---Petty Officer 1st Class
PO1
---Petty Officer 2nd Class
PO2
---Petty Officer 3rd Class
PO3
---Crewman
CM
---Crewman Apprentice
CMA
---Crewman Recruit
CMR
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CADET
Cadets are officers currently attending Starfleet Academy or on a cadet cruise aboard a Starbase or Starship. They are all addressed as 'Cadet', or 'Officer Cadet'. They may be giving an 'Acting-Ensign' rank by authorisation of the Commanding Officer of the starship/starbase they are on their cruise aboard, or by the Academy Adjutant or other senior Academy staff.
 RANK INSIGNIA ABBREVIATION
---4th Year Cadet
Cdt.
---3rd Year Cadet
Cdt.
---2nd Year Cadet
Cdt.
---1st Year Cadet
Cdt.
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COLOUR CODING
Starfleet personnel wear an undershirt of their department colour, this under shirt extends to the collar, where the rank insignia is pinned. The following is a list of colours, the departments which wear that colour and an image of the right hand side of the collar (with rank insignia).
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Colour Department(s) Collar (with Insignia)
 Red Command, Flight Control, Admin
 Gold Operations, Engineering, Security, Tactical
 Teal Medical, Counseling, Science
 Grey Intelligence
 Green Marines
 Royal Blue Starfleet Research & Development, Training
 White Ambassadorial/Diplomatic
 Purple Judge Advocate General
Orange Flight Deck Control (Starbases & Carriers)
Skull White Flight Deck Engineers (Starbase & Carriers)
Mint Green Civilian Services (Starbases)
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CIVILIAN STAFF COLOUR CODING
On board a starship or starbase as of 2377, all Starfleet employed or contracted civilian staff are to wear an issued 'Starfleet Civilian uniform'. This includes a white or grey undershirt which extends to the collar. This collar and the uniforms trim are colour coded corresponding to the department or section the civilian is working in. Any civilian clothing may be worn on top of this undershirt, so long as the collar of the department remains visible.

Non-Starfleet employed or contracted civilian staff have the option of wearing their own clothes or Starfleet issued clothing, but are still displayed in the manifest by their appropriate collar and trim.

All R&D staff must wear full Starfleet Duty Uniform with a white undershirt displaying the collar.
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Colour Department(s) Collar & Trim
 Red Administration (Civilian)
 Gold Engineering (Civilian)
 Teal Science (Civilian), Medical (Civilian)
 White Ambassadorial (Civilian)
 Orange Education
 Mint Green Retail & Trade
 Light Blue Recreation
 Royal Blue Starfleet R & D (Civilian Staff), Training (Civlian)
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Return to Info Library  I  Rank Descriptions
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