| Acronym | Meaning |
 | DL | Dive Leader (BSAC) |
| AIE | Advanced Instructor Exam (BSAC) |
| BWRAF | Buoyancy |
| CMAS | Confederation Moniale Des Activities Subaquatiques |
| DIR | Doing It Right |
| HP | High Pressure |
| OW | Open Water Certification; First Certification Level. |
| NI | National Instructor (BSAC) |
| EAR | Expired Air Resuscitation |
| ITC | Instructor Training Course (BSAC) |
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