Wikia

Vice Admiral is a flag officer rank, senior to a rear admiral but junior to admiral. It is equivalent to the rank of lieutenant general.

Officers holding the rank of vice admiral are sometimes referred to as "three-stars" (USS Baldwin: "The Find")

The Hydran equivalent to a vice admiral is a second admiral. (RIS Bouteina: "High Priestess of Evacuation")

Non-Starfleet insigniaEdit

Klingon Navy	Lyran Starfleet

	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
Klingon Defense Force (Ground forces & navy)	Bekk	Cpl	Sgt	MSgt	SgtMaj		2^nd Lt	1^st Lt	Capt (HoH)	Maj	LtCol	Col	Brig ('ech)		LtGen	Gen (Sa')
Klingon Defense Force (Ground forces & navy)	Bekk	PO2	PO1	CPO	MCPO		ENS	LTJG	LT (Sogh)	LCDR	CDR (la')	CAPT (HoD)	CDRE (totlh)		VADM	ADM
Kai Imperium	TRN MNX IMUN	LGN3 LGN2 LGN1	CLGN	CEN	SCEN		PVT	PRN		OP	TRB VIC	PR	PTR		MST	LEG	IMP
Kellarian System Defense Force (Navy & Ground forces)	CR CN	PO2 PO1	CPO	SCPO	MCPO		ENS	LT	SCDR		CDR	CAPT	CDRE	VADM		ADM	FADM
Kellarian System Defense Force (Navy & Ground forces)	PVT PFC	CPL SGT	SSG	MSG	SGM		SLT	LT	SCDR		CDR	COL	MGEN	LGEN		GEN	CGEN
Lyran ranks	CR CN	PO2 PO1	CPO	SCPO	MCPO	CDT	ENS	LTJG	LT	LCDR	CDR	CAPT FCAPT	CDRE	SCDRE	VADM	COUNT	DUKE KING

2250s	2265-2270s	Early 2270s (Shoulders/Sleeves)	Late 2270s-2350s (Shoulders/Sleeves)