
Admiral
ADML

Vice Admiral
VADM

Rear Admiral
RADM

Commodore
CDRE

Captain
CAPT

Commander
CMDR

Chaplain
CHAP

Lieutenant Commander
LCDR

Lieutenant
LEUT

Sub Lieutenant
SBLT

Acting Sub Lieutenant
ASLT

Midshipman
MIDN

Warrant Officer of the Navy
WO-N

Warrant Officer
WO

Chief Petty Officer
CPO

Petty Officer
PO

Leading Seaman
LS

Able Seaman
AB

Seaman
SMN
Note: Chaplains and MSWOs are commissioned officers without rank. However, for ceremonial and protocol purposes they are, where appropriate, normally grouped with Commanders.