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Good conduct
variation
Petty Officer
Third Class
insignia
Petty Officer Third Class is the fourth enlisted rank in the U.S. Navy, just above Seaman and below Petty Officer Second Class, and is the lowest form of non-commissioned officer.
Unlike the Seaman and lower ranks, advancement to Petty Officer Third Class is not automatic given time in service, but is also contingent on performance evaluations by their superiors and rate examinations (test of speciality knowledge). The advancement cycle is currently every 6 months. Only a certain number of billets (job openings for this rank) open up biannually and all Seamen compete. The top scorers are chosen for advancement, but only in sufficient quantities to fill the billets available.
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U.S. military enlisted ranks | |||||||||
| E-1 | E-2 | E-3 | E-4 | E-5 | E-6 | E-7 | E-8 | E-9 | |
|---|---|---|---|---|---|---|---|---|---|
| Air Force: | AB | Amn | A1C | SRA | SSgt | TSgt | MSgt | SMSgt | CMSgt - |
| Army: | PV1 | PV2 | PFC | SPC - | SGT | SSG | SFC | MSG - | SGM - |
| Marine Corps: | Pvt | PFC | LCpl | Cpl | Sgt | SSgt | GySgt | MSgt - | MGySgt - |
| Navy: | SR | SA | SN | PO3 | PO2 | PO1 | CPO | SCPO | MCPO - |