| Acronym | Meaning |
 | SAR | Search And Rescue/Recovery |
| CAGE | Cerebral Arterial Gas Embolism |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| EAN(X) | Enriched Air Nitrox |
| SWP | Safe Working Pressure |
| TDT | Total Dive Time |
| BHA | British Hyperbaric Association |
| TNT | Total Nitrogen Time |
| PG | Pressure Group |
| ITW | Instructor Training Workshop (BSAC) |
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