| Abbreviation | Definition |
|---|---|
| CTOCM | mmunications Technician (communications Branch) Master Chief Petty Officer |
| CTOCM | yptologic ((communications Branch)) Chief Petty Officer |
| CTOCS | Communications Technician (communications Branch) Senior Chief Petty Officer |
| CTOCS | Cryptologic (communications Branch) Senior Chief Petty Officer |
| CTOCS | mmunications Technician (communications Branch) Senior Chief Petty Officer |
| CTOCS | yptologic (communications Branch) Senior Chief Petty Officer |
| CTOSA | Communications Technician (communications Branch) Seaman Apprentice |
| CTOSA | Cryptologic (communications Branch) Seaman Apprentice |
| CTOSA | mmunications Technician (communications Branch) Seaman Apprentice |
| CTOSA | yptologic (communications Branch) Seaman Apprentice |
| CTOSN | Communications Technician (communications Branch) Seaman |
| CTOSN | Cryptologic (communications Branch) Seaman |
| CTOSN | mmunications Technician (communications Branch) Seaman |
| CTOSN | yptologic (communications Branch) Seaman |
| CTOSR | Communications Technician (communications Branch) Seaman Recruit |
| CTOSR | Cryptologic (communications Branch) Seaman Recruit |
| CTOSR | mmunications Technician (communications Branch) Seaman Recruit |
| CTOSR | yptologic (communications Branch) Seaman Recruit |
| CTR1 | Communications Technician (collection) Petty Officer 1st Class |
| CTR1 | Cryptologic (collection) Petty Officer 1st Class |