| Abbreviation | Definition |
|---|---|
| SOM1 | oundman 1st Class Petty Officer |
| SOM1 | Soundman 1st Class Petty Officer |
| SOM2 | Soundman 2nd Class Petty Officer |
| SOM2 | undman 2nd Class Petty Officer |
| SOM3 | oundman 3rd Class Petty Officer |
| SOM3 | Soundman 3rd Class Petty Officer |
| SOMD | Secretary's Office, General Counsel (US Navy) |
| SOMH1 | narman (harbor Defense) 1st Class Petty Officer |
| SOMH1 | Sonarman (harbor Defense) 1st Class Petty Officer |
| SOMH2 | narman (harbor Defense) 2nd Class Petty Officer |
| SOMH2 | Sonarman (harbor Defense) 2nd Class Petty Officer |
| SOMH3 | narman (harbor Defense) 3rd Class Petty Officer |
| SOMH3 | Sonarman (harbor Defense) 3rd Class Petty Officer |
| SOSA | narman Seaman Apprentice |
| SOSA | Sonarman Seaman Apprentice |
| SOSN | narman Seaman |
| SOSN | Sonarman Seaman |
| SOSR | narman Seaman Recruit |
| SOSR | Sonarman Seaman Recruit |
| SP1 | ecialist 1st Class Petty Officer |