| Acronym | Meaning |
 | AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| TO | Training Officer (BSAC) |
| SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| OW | Open Water Certification; First Certification Level. |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| DM | Dive Master (PADI) |
| DV | Demand Valve |
| RDP | Recreational Dive Planner |
| DCAP | Decompression Computation And Analysis Program |
| GMDSS | Global Maritime Distress And Safety System |
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