| Acronym | Meaning |
 | AMDT | Adjusted Maximum Dive Time |
| C-CARD | Scuba Diving Certification Card. |
| IDC | Instructor Development Course (PADI) |
| GPS | Global Positioing System |
| OWSI | Open Water SCUBA Instructor (PADI) |
| CAGE | Cerebral Arterial Gas Embolism |
| ADT | Actual Dive Time |
| HSE | Health And Safety Executive |
| MDL | No Decompression Limit |
| DPV | Diver Propulsion Vehicle |
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