| Acronym | Meaning |
 | RDP | Recreational Dive Planner |
| AIC | Advanced Instructor Course (BSAC) |
| DV | Demand Valve |
| DAN | Divers Alert Network |
| DIN | Deutsches Insitut Fuer Normung |
| ITC | Instructor Training Course (BSAC) |
| CNS | Central Nervous System |
| SCUDA | Self Contained Underwater Drinking Apparatus. Product That Can Be Used To Drink Underwater. |
| EAR | Expired Air Resuscitation |
| OWIC | Open Water Instructor Course (BSAC) |
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