Crewman apprentice

Crewman apprentice (also known as crewman second class) is the second-lowest Starfleet enlisted rank, ranking above crewman recruit and below crewman.

Starfleet insignia[]

22nd century	2230s

2250s	2260s-2270s	Early 2270s	Late 2270s-2350s
			N/A

2350s-2360s	2360s-2370s service uniform^[1]	2360s-2370s duty uniform^[1]	2373-2380s

Early 2380s	Mid 2380s	2390s
File:CA (early 2380s).png File:Red (early 2380s).png	File:CA (mid 2380s).png File:Red (mid 2380s).png	File:CA (2390s).png File:Red (2390s).png

Alternate realities[]

2250s	2380s-2400s	2390s	29^th century

	Enlisted ranks					Etc	Officer ranks						Flag ranks
Starfleet Officers Enlisted Misc.	CR CA CN	PO3 PO2 PO1	CPO	SCPO	MCPO CMCPO FMCPO MCPOSF	WO CDT MID REC	ENS	LTJG	LT	LCDR	CDR	CAPT FCAPT	CDRE RDML RADM	VADM	ADM	FADM
Kai Imperium	TRN MNX IMUN	LGN3 LGN2 LGN1	CLGN	CEN	SCEN		PVT	PRN		OP	TRB VIC	PR	PTR	MST	LEG	IMP

References[]

↑ ^1.0 ^1.1 Up until the introduction of specialized insignia in 2372, crewmen and petty officers wore no insignia.

[Crewman-1] 1.0 ^1.1 Up until the introduction of specialized insignia in 2372, crewmen and petty officers wore no insignia.

[1]