Enlisted Rating Insignia

The enlisted rating badge specialty insignia indicating the Sailor's job specialty (rating). These insignia appear in white on blue uniforms and Navy blue on white uniforms.

Administration, Deck, Medical, Technical,
and
Weapons Specialties (Seamen)

BM - Boatswain's Mate

CT - Cryptologic Technician
CTA - Administration
CTI - Interpretive
CTM - Maintenance
CTO - Communications
CTR - Collection
CTT - Technical

DK - Disbursing Clerk

DM - Illustrator Draftsman

DP - Data Processing Technician
Merged with RM in 1997.

DS - Data Systems Technician

DT - Dental Technician

ET - Electronics Technician

EW - Electronics Warfare Technician

FC - Fire Controlman

FT - Fire Control Technician

GM - Gunner's Mate "Gunner's Mate" is used at pay grade E-7 and above. Leading to
GMG - Guns
GMM - Missiles

HM - Hospital Corpsman

IS - Intelligence Specialist

IT - Information Systems Technician Formerly known as Radioman up to 1999.

JO - Journalist

LI - Lithographer

LN - Legalman

MA - Master-at-Arms

MN - Mineman

MS - Mess Management Specialist

MT - Missile Technician

MU - Musician

NC - Navy Counsler

OS - Operations Specialist

OT - Ocean Systems Technician
"Ocean Systems Technician" is used at pay grade E-9 only. Leading to OTA - Analyst
OTM - Maintainer

PC - Postal Clerk

PN - Personnelman

QM - Quartermaster

RP - Religious Programs Specialist

SH - Ship's Serviceman

SK - Storekeeper

SM - Signalman

ST - Sonar Technician
STG - Surface
STS - Submarine

TM - Torpedoman's Mate

WT - Weapons Technician

YN - Yeoman

BT - Boiler Technician

DC - Damage Controlman

EM - Electrician's Mate

EN - Engineman

GS - Gas Turbine System Technician
"Gas Turbine System Technician" is used at pay grade E-9 only.
Leading to
GSE - Electrical
GSM - Mechanical

HT - Hull Maintenance Technician

IC - Interior Communications Electrician

IM - Instrumentman

ML - Molder

MM - Machinist's Mate

MR - Machinery Repairman

OM - Opticalman

PM - Patternmaker

Aviation Specialties (Airmen)

AB - Aviation Boatswain's Mate
"Aviation Boatswain's Mate" is used at pay grade E-9 only. Leading to
ABE -  Launching & Recovery Equipment
ABF - Fuels
ABH - Aircraft Handling

AC - Air Traffic Controller

AD - Aviation Machinist's Mate

AE - Aviation Electronics Mate

AG - Aerographer's Mate

AK - Aviation Storekeeper

AM - Aviation Structural Mechanic
"Aviation Structural Mechanic" is used  at pay grade E-8 only. Leading to
AME - Safety Equipment
AMH - Hydraulics
AMS - Structures

AO - Aviation Ordnanceman

AS - Aviation Support
Equipment Technician

AT - Aviation Electronics Technician

AW - Aviation Warfare
Systems Operator

AZ - Aviation Maintenance Administrationman

PH - Photographer's Mate

PR - Aircrew Survival Equipmentman

Construction Specialties (Constructionmen - Seabees)

BU - Builder (1)

CE - Construction Electrician (2)

CM - Construction Mechanic (3)

EA - Engineering Aide (1)

EO - Equipment Operator (3)

SW - Steelworker (1)

UT - Utilitiesman (2)