| Abbreviation | Definition |
|---|---|
| DMMSN | aftsman (mechanical) Seaman |
| DMMSN | Draftsman (mechanical) Seaman |
| DMMSR | aftsman (mechanical) Seaman Recruit |
| DMMSR | Draftsman (mechanical) Seaman Recruit |
| DMS1 | aftsman (structual) Petty Officer 1st Class |
| DMS1 | Draftsman (structual) Petty Officer 1st Class |
| DMS2 | aftsman (structual) Petty Officer 2nd Class |
| DMS2 | Draftsman (structual) Petty Officer 2nd Class |
| DMS3 | aftsman (structual) Petty Officer 3rd Class |
| DMS3 | Draftsman (structual) Petty Officer 3rd Class |
| DMSA | aftsman Seaman Apprentice |
| DMSA | Draftsman Seaman Apprentice |
| DMSA | Illustrator Draftsman Seaman Apprentice |
| DMSA | lustrator Draftsman Seaman Apprentice |
| DMSC | aftsman (structual) Chief Petty Officer |
| DMSC | Draftsman (structual) Chief Petty Officer |
| DMSN | aftsman Seaman |
| DMSN | Draftsman Seaman |
| DMSN | Illustrator Draftsman Seaman |
| DMSN | lustrator Draftsman Seaman |