| Abbreviation | Definition |
|---|---|
| BURCN | Builder ((concrete)) Constructionman |
| BURCR | Builder (concrete) Constructionman Recruit |
| BUSM | Builder Master Chief Petty Officer |
| C | Carpenter |
| C1C | Naval Academy Midshipman Senior 1st Class |
| C2C | Naval Academy Midshipman Junior 2nd Class |
| C3C | Naval Academy Midhsipman Sophomore 3rd Class |
| C4C | Naval Academy Midshipman Freshman 4th Class |
| CA | Constructionman Apprentice |
| CABCK | Cabin Cook |
| CABSTD | Cabin Steward |
| CAERM | Chief Aerographer's Mate |
| CAP | Chief Aviation Pilot |
| CAPTCLK | Captain's Clerk |
| CAR | Chief Airship Rigger |
| CARP | Carpenter |
| CAULKER | Caulker |
| CB | Chief Boilermaker |
| CBGMSTR | Chief Bugle Master |
| CBMA | Chief Boatswain's Mate (master-at-arms) |