
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
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Starfleet petty officer first class insignia | ||||||||||||||||||||||||||||||||||||||||||||||
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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) | ![]() | ![]() ![]() | ![]() ![]() | ![]() | ||||||||||||||||||||||||||||||||||||||||||
Federation Starfleet ranks (2270s-2350s) | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ||||||||||||||||||||||||||||||||||||||
Federation Starfleet ranks (2350s-2360s) | ![]() | ![]() | ![]() | ![]() | ||||||||||||||||||||||||||||||||||||||||||
Federation Starfleet ranks (2360s-2370s) | ![]() | ![]() | ![]() | ![]() | ||||||||||||||||||||||||||||||||||||||||||
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Federation Starfleet ranks (2370s-2380s) | ![]() | ![]() | ![]() |
Petty officers first class
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Connections
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Enlisted ranks | Commissioned ranks | Flag ranks | ||||||||||||||
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Earth SF | CREW | PO2
PO1 | CPO
| ENS | LT | CMDR | CAPT
| CDORE | RADM/2ADM | VADM/3ADM | 4ADM | FADM/5ADM
| ||||
Starfleet & SFMC | ENS JG
| LT JG | LT | LT CMDR | CDR | CDORE
| ||||||||||
PVT | CPL | SGT
| SUBLT
| 1ST LT | CAPT | MAJOR | LT COL | COL | BRIG | GEN |