United States Amy Rank Abbreviations and Acronyms

1. IMOSA
   INSTRUMENTMAN (OFFICE MACHINE REPAIRMAN) SEAMAN APPRENTICE
2. IMSA
   INSTRUMENTMAN SEAMAN APPRENTICE
3. IMSN
   INSTRUMENTMAN SEAMAN
4. IMSR
   INSTRUMENTMAN SEAMAN RECRUIT
5. IMWC
   INSTRUMENTMAN (WATCH & CLOCK REPAIRMAN) CHIEF PETTY OFFICER
6. IS1
   INTELLIGENCE SPECIALIST PETTY OFFICER 1ST CLASS
7. IS2
   INTELLIGENCE SPECIALIST PETTY OFFICER 2ND CLASS
8. IS3
   INTELLIGENCE SPECIALIST PETTY OFFICER 3RD CLASS
9. ISC
   INTELLIGENCE SPECIALIST CHIEF PETTY OFFICER
10. ISCM
    INTELLIGENCE SPECIALIST MASTER CHIEF PETTY OFFICER
11. ISCS
    INTELLIGENCE SPECIALIST SENIOR CHIEF PETTY OFFICER
12. IT2
    INFORMATION TECHNICIAN PETTY OFFICER 2ND CLASS
13. IT3
    INFORMATION TECHNICIAN PETTY OFFICER 3RD CLASS
14. ITC
    INFORMATION TECHNICIAN CHIEF PETTY OFFICER
15. ITCM
    INFORMATION TECHNICIAN MASTER CHIEF PETTY OFFICER
16. ITCS
    INFORMATION TECHNICIAN SENIOR CHIEF PETTY OFFICER
17. ITSA
    INFORMATION TECHNICIAN SEAMAN APPRENTICE
18. ITSN
    INFORMATION TECHNICIAN SEAMAN
19. ITSR
    INFORMATION TECHNICIAN SEAMAN RECRUIT
20. JD
    JACK OF THE DUST

Last updated: May 24, 2020 — Total entries: 3,362