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|Master chief petty officer insignia|
|Starfleet, Late 2270s - 2350s|
|Starfleet, Late 2360s - Early 2370s|
Master chief petty officer (MCPO) was an enlisted naval rate, a type of military rank used by the service organizations of different cultures. As a traditional naval grade, MCPO was the most senior grade of chief petty officer, and is the highest non-commissioned officer grade in organizations like Starfleet and the United States Navy. In comparison to infantry ranking systems, this rate was approximately equivalent to the most senior sergeant grade, such as sergeant-major. Personnel of this grade could be addressed simply as chief (or more properly, "master chief"), and sometimes by their job title, such as "master chief specialist."
While nominally subordinate to all commissioned officers, master chiefs wielded far more influence and authority than most junior officers and acted as mentors and advisors to senior officers. Master chiefs had decades of practical experience and were an indispensable source of technical skill and leadership on Starfleet vessels.
When there were individual grades of chief petty officers, senior chief petty officer (SCPO) was subordinate to MCPO.
In 2286, when a probe projecting humpback whale signals threatened to destroy Earth, Master CPO Janice Rand was one of the officers in Admiral Cartwright's command area. (Star Trek IV: The Voyage Home)
|Enlisted personnel||Commissioned officers||Generals and flag officers|
|ENS||LT JG||LT||LT CMDR||CMDR||CAPT||FCAPT||CDORE||RADM||VADM||ADM||FADM|
|2nd LT||1st LT||CAPT||MAJ||LT COL||COL||BRIG||MAJ GEN||LT GEN||GEN||MARSHAL|
|Positions:||Crewman • Technician • Chief||YMN||TAC • SO • 3rd • 2nd • 1st • CO • DD||Portmaster • Chief of Staff • CinC|
|Services:|| Andorian • Bajoran • Cardassian • Jem'Hadar • Klingon • Romulan • SS • Terran Empire Starfleet • Terran Empire MACO •|
United Earth MACO • United Earth/Federation Starfleet • United States • Vulcan
See also Edit
Background information Edit
The rank of "master chief petty officer" was never referenced in dialogue, but is rather derived from rank insignia.
The Star Trek movie-era rank insignia, designed by Robert Fletcher, was the first and only Trek insignia systems to feature separate pins for several realistic grades of CPOs. It is odd that Rand was in a chief uniform – while she was an enlisted chief in Star Trek: The Motion Picture, when she appeared again in Star Trek III: The Search for Spock she was wearing officer insignia before being seen with MCPO insignia in Star Trek IV. Since the character in Star Trek III was simply credited as "woman", it may not necessarily have been Rand, but a different character.
Similar confusion in Rand holding various officer ranks dates back to the Marvel TOS "Eclipse of Reason" and DC TOS volume 2 "The Dream Walkers" comics, and continues in Star Trek VI: The Undiscovered Country and VOY: "Flashback".