| Acronym | Meaning |
| AGE | Aterial Gas Embolism |
| DPV | Diver Propulsion Vehicle |
| EAR | Expired Air Resuscitation |
| NASDS | National Association Of Scuba Diving Schools; Diving Instruction Organization. |
| ITS | Instructor Training Scheme (BSAC) |
| OD | Ocean Diver (BSAC) |
| BC | Bouyancy Compensator |
| ITC | Instructor Training Course (BSAC) |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| AIE | Advanced Instructor Exam (BSAC) |