| Abbreviation | Definition |
|---|---|
| HSSR | gh School (seaman) |
| HSSR | High School (seaman) |
| HT1 | Hull Maintenance Technician Petty Officer 1st Class |
| HT1 | ll Maintenance Technician Petty Officer 1st Class |
| HT2 | Hull Maintenance Technician Petty Officer 2nd Class |
| HT2 | ll Maintenance Technician Petty Officer 2nd Class |
| HT3 | Hull Maintenance Technician Petty Officer 3rd Class |
| HT3 | ll Maintenance Technician Petty Officer 3rd Class |
| HTC | Hull Maintenance Technician Chief Petty Officer |
| HTC | ll Maintenance Technician Chief Petty Officer |
| HTCM | Hull Maintenance Technician Master Cheif Petty Officer |
| HTCM | ll Maintenance Technician Master Cheif Petty Officer |
| HTCS | Hull Maintenance Technician Senior Chief Petty Officer |
| HTCS | ll Maintenance Technician Senior Chief Petty Officer |
| HTFA | Hull Maintenance Technician Fireman Apprentice |
| HTFA | ll Maintenance Technician Fireman Apprentice |
| HTFR | Hull Maintenance Technician Fireman Recruit |
| HTFR | ll Maintenance Technician Fireman Recruit |
| HULKEX | Hulk Exercise (naval exercise: US and Australia) |
| HVNU | High Value Naval Unit |