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The rating of Chief petty officer was the highest enlisted rating in Starfleet. The chief petty officer, invariably referred to as chief, was a senior non-commissioned officer and is often in control of an entire section of petty officers and unrated enlisted personnel.

The term "chief petty officer" is deduced from real-world naval nomenclature; it is not used in canon Trek, only the word "chief".

Chiefs are further subdivided into a series of ranks based on seniority and merit. These ranks, from lower to higher are as follows: chief, senior chief, and master chief.

While chiefs are subordinate to all commissioned officers, intelligent ensigns or lieutenants will listen to their chiefs, as these non-commissioned officers frequently have far greater experience than the junior officers under whom they serve. Even senior officers recognize the value of a good chief petty officer and will take their suggestions and advice seriously.

Insignia Edit

StarfleetEdit

2373 - CPO (Command) 2373 - CPO (Operations) 2373 - CPO (Sciences)


Klingon NavyEdit

Klingon Navy - CPO


Current Edit

  • CPO Jamar Tambu



Enlisted ranks Non-commissioned officer ranks Etc Commissioned ranks Flag ranks
E1 E2 E3 E4 E5 E6 E7 E8 E9 O1 O2 O3 O4 O5 O6 O7 O8 O9 O10 O11
Starfleet CR CA CN PO3 PO2 PO1 CPO SCPO MCPO
CMCPO
FMCPO
MCPOSF
WO

CDT

MID

REC

ENS LTJG LT LCDR CDR CAPT

FCAPT

DDIR

COMM RADM VADM ADM FADM

CinC

Federation Marine Corps Pvt PFC LCpl Cpl Sgt SSgt GySgt MSgt
1st Sgt
MGySgt
SgtMaj
SMOMC
WO

Cdt

2nd Lt 1st Lt Capt Maj LtCol Col BGen MajGen LtGen Gen GenCorps


Klingon ground troops Bekk2 Bekk1 Cpl Sgt MSgt SgtMaj 2nd Lt 1st Lt Capt Maj LtCol Col Brig LtGen Gen
Klingon navy PO2 PO1 CPO MCPO ENS LTJG LT LCDR CDR CAPT RADM VADM ADM
Romulan Star Navy UHL (unknown) SLt Lt Cent SCdr Cdr Adm
Tal Shiar 2nd Lt 1st Lt Capt Maj Col Gen

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