| Acronym | Meaning |
 | BT | Bottom Time |
| VENTID | Vision Ears Nausea Twitiching Irritation Dizziness |
| BHA | British Hyperbaric Association |
| RYA | Royal Yachting Association |
| END | Equivalent Narcotic Depth |
| OD | Ocean Diver (BSAC) |
| CNS | Central Nervous System |
| VGE | Venous Gas Embolism |
| SSI | Scuba Schools International; Diving Instruction Organization. |
| ITC | Instructor Training Course (BSAC) |
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