| Acronym | Meaning |
| BWRAF | Buoyancy |
| CCR | Closed Circuit Rebreather |
| ITC | Instructor Training Course (BSAC) |
| GMDSS | Global Maritime Distress And Safety System |
| CAGE | Cerebral Arterial Gas Embolism |
| ADT | Actual Dive Time |
| SSI | Scuba Schools International; Diving Instruction Organization. |
| BC | Bouyancy Compensator |
| AIE | Advanced Instructor Exam (BSAC) |
| EAR | Expired Air Resuscitation |