Governmental & Military Abbreviations and Acronyms

1. NSEA3
   NATIVE SEAMAN 3RD CLASS
2. NW1
   NUCLEAR WEAPONSMAN PETTY OFFICER 1ST CLASSS
3. NW2
   NUCLEAR WEAPONSMAN PETTY OFFICER 2ND CLASSS
4. NW3
   NUCLEAR WEAPONSMAN PETTY OFFICER 3RD CLASSS
5. OFF STD
   Officer'S Steward
6. OILER
   Oiler
7. OS1
   OFFICER'S STEWARD 1ST CLASS (NON PETTY OFFICER)
8. OS1
   OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS
9. OT1
   OCEAN SYSTEMS TECHNICIAN PETTY OFFICER 1ST CLASS
10. OT3
    OCEAN SYSTEMS TECHNICIAN PETTY OFFICER 3RD CLASS
11. OTA1
    OCEAN SYSTEMS TECHNICIAN (AUTOMATIC) PETTY OFFICER 1ST CLASS
12. OTA2
    OCEAN SYSTEMS TECHNICIAN (AUTOMATIC) PETTY OFFICER 2ND CLASS
13. OTA3
    OCEAN SYSTEMS TECHNICIAN (AUTOMATIC) PETTY OFFICER 3RD CLASS
14. OTASN
    OCEAN SYSTEMS TECHNICIAN (AUTOMATIC) SEAMAN
15. OTASR
    OCEAN SYSTEMS TECHNICIAN (AUTOMATIC) SEAMAN RECRUIT
16. OTM1
    OCEAN SYSTEMS TECHNICIAN (MANUAL) CHIEF PETTY OFFICER
17. OTM2
    OCEAN SYSTEMS TECHNICIAN (MANUAL) PETTY OFFICER 2ND CLASS
18. OTM3
    OCEAN SYSTEMS TECHNICIAN (MANUAL) PETTY OFFICER 3RD CLASS
19. OTMSA
    OCEAN SYSTEMS TECHNICIAN (MANUAL) SEAMAN APPRENTICE
20. OTMSN
    OCEAN SYSTEMS TECHNICIAN (MANUAL) SEAMAN

Last updated: May 24, 2020 — Total entries: 74,798