| Abbreviation | Definition |
|---|---|
| CM1 | Construction Mechanic Petty Officer 1st Class |
| CM1 | Mechanic Petty Officer 1st Class |
| CM1 | nstruction Mechanic Petty Officer 1st Class |
| CM1 | rpenter's Mate First Class |
| CM2 | Carpenter's Mate Second Class |
| CM2 | chanic Petty Officer 2nd Class |
| CM2 | Construction Mechanic Petty Officer 2nd Class |
| CM2 | Mechanic Petty Officer 2nd Class |
| CM2 | nstruction Mechanic Petty Officer 2nd Class |
| CM2 | rpenter's Mate Second Class |
| CM3 | Carpenter's Mate Third Class |
| CM3 | chanic Petty Officer 3rd Class |
| CM3 | Construction Mechanic Petty Officer 3rd Class |
| CM3 | Mechanic Petty Officer 3rd Class |
| CM3 | nstruction Mechanic Petty Officer 3rd Class |
| CM3 | rpenter's Mate Third Class |
| CMA1 | Carpenter's Mate (aviation) Petty Officer First Class |
| CMA1 | Construction Mechanic (automotive) Petty Officer First Class |
| CMA1 | nstruction Mechanic (automotive) Petty Officer First Class |
| CMA1 | rpenter's Mate (aviation) Petty Officer First Class |