| Acronym | Meaning |
| LP | Low Pressure |
| AGE | Aterial Gas Embolism |
| MDT | Maximum Dive Time |
| IAND | International Association Of Nitrox Divers |
| DPV | Diver Propulsion Vehicle |
| BHA | British Hyperbaric Association |
| EFR | Emergency First Response |
| ITW | Instructor Training Workshop (BSAC) |
| HSE | Health And Safety Executive |
| OW(D) | Open Water (Diver) (PADI) |