| Acronym | Meaning |
 | MSD | Master SCUBA Diver (PADI) |
| OWI | Open Water Instructor (BSAC) |
| ITW | Instructor Training Workshop (BSAC) |
| AI | Assistant Instructor (PADI) Advanced Instructor (BSAC) |
| HSE | Health And Safety Executive |
| TDT | Total Dive Time |
| IOC | Instructor Orientation Course (PADI) |
| AMDT | Adjusted Maximum Dive Time |
| MCA | Maritime And Coastguard Agency |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
Browse by Letter:
