| Acronym | Meaning |
 | PADI | Professional Association Of Diving Instructors |
| OWIC | Open Water Instructor Course (BSAC) |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| CNS | Central Nervous System |
| BT | Bottom Time |
| MSD | Master SCUBA Diver (PADI) |
| BC | Bouyancy Compensator |
| ITC | Instructor Training Course (BSAC) |
| DCI | Decompression Illness |
| AGE | Aterial Gas Embolism |
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