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Memory Beta, non-canon Star Trek Wiki
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2350s gray po1

PO1 rank insignia.

petty officer first class (PO1) is a type of rank, specifically, an enlisted rate in naval services and space forces, most notably the Starfleet of the United Federation of Planets.

A petty officer first class is an advancement of petty officer, and is one of the most basic NCO rates, a grade higher than an petty officer second class and a grade below chief petty officer in some rank structures. This grade of PO is roughly equivalent with the authority of a basic sergeant of military forces.

Petty officer first class uniform insignia existed in Starfleet, a rank insignia worn on the Starfleet uniforms of numerous eras. (FASA RPG modules: Cadet's Orientation Sourcebook, Star Trek: The Next Generation Officer's Manual)

PO1 insignia[]

Starfleet petty officer first class insignia
era general wear command division operations division sciences division
command tactical/military flight-engineering
(admin, pilot, engineer)
security special services sci-ops
(ops, sci & tac ops)
medical
Federation Starfleet ranks (2260s) Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2270s-2350s) Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2350s-2360s) Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2360s-2370s) Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2370s-2380s) Uniform shoulder. Uniform shoulder. Uniform shoulder.

Petty officers first class[]

Connections[]

Enlisted ranks Commissioned ranks Flag ranks
Earth SF CREW PO2

PO1

CPO

SCPO


MCPO

ENS LT CMDR CAPT

FCAPT


VICE CDORE

CDORE RADM / 2ADM VADM / 3ADM 4ADM FADM / 5ADM

GADM

Starfleet & SFMC ENS JG

ENS


ENS 1C

LT JG LT LT CMDR CDR CDORE

1ADM

PVT CPL SGT

MASTER SGT

SUBLT

2ND LT

1ST LT CAPT MAJOR LT COL COL BRIG GEN
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