| Acronym | Meaning |
 | DCI | Decompression Illness |
| AMDT | Adjusted Maximum Dive Time |
| VGE | Venous Gas Embolism |
| ADT | Actual Dive Time |
| TNT | Total Nitrogen Time |
| MSDT | Master SCUBA Diver Trainer (PADI) |
| OWIC | Open Water Instructor Course (BSAC) |
| ATA | Atmospheres Absolute |
| HSE | Health And Safety Executive |
| AI | Assistant Instructor (PADI) Advanced Instructor (BSAC) |
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