| Abbreviation | Definition |
|---|---|
| RMCM | dioman Master Chief Petty Officer |
| RMCM | Radioman Master Chief Petty Officer |
| RMCS | dioman Senior Chief Petty Officer |
| RMCS | Radioman Senior Chief Petty Officer |
| RMN | Royal Manticoran Navy |
| RMN1 | dioman (navigation) Petty Officer 1st Class |
| RMN1 | Radioman (navigation) Petty Officer 1st Class |
| RMN2 | dioman (navigation) Petty Officer 2nd Class |
| RMN2 | Radioman (navigation) Petty Officer 2nd Class |
| RMN3 | dioman (navigation) Petty Officer 3rd Class |
| RMN3 | Radioman (navigation) Petty Officer 3rd Class |
| RMNC | dioman (navigation) Chief Petty Officer |
| RMNC | Radioman (navigation) Chief Petty Officer |
| RMNSA | dioman (navigation) Seaman Apprentice |
| RMNSA | Radioman (navigation) Seaman Apprentice |
| RMNSN | dioman (navigation) Seaman |
| RMNSN | Radioman (navigation) Seaman |
| RMNSR | dioman (navigation) Seaman Recruit |
| RMNSR | Radioman (navigation) Seaman Recruit |
| RMSA | dioman Seaman Apprentice |