| Abbreviation | Definition |
|---|---|
| SMCM | gnalman Master Chief Petty Officer |
| SMCM | Signalman Master Chief Petty Officer |
| SMCS | gnalman Senior Petty Officer |
| SMCS | Signalman Senior Petty Officer |
| SMM1 | ilmaker's Mate First Class |
| SMM1 | Sailmaker's Mate First Class |
| SMM2 | ilmaker's Mate Second Class |
| SMM2 | Sailmaker's Mate Second Class |
| SMM3 | ilmaker's Mate Third Class |
| SMM3 | Sailmaker's Mate Third Class |
| SMSA | gnalman Seaman Apprentice |
| SMSA | Signalman Seaman Apprentice |
| SMSN | gnalman Seaman |
| SMSN | Signalman Seaman |
| SMSR | gnalman Seaman Recruit |
| SMSR | Signalman Seaman Recruit |
| SN | aman |
| SNC | School of Naval Cooperation |
| SNIC | Surface Navy Innovation Center |
| SNITCH | Shipboard Navy Identification Technical Consolidated Handbook |