| Acronym | Meaning |
| DPV | Diver Propulsion Vehicle |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| RNT | Residual Nitrogen Time |
| AGE | Aterial Gas Embolism |
| AA | Assisted Ascent |
| NI | National Instructor (BSAC) |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| MCS | Marine Conservation Society |
| BC | Bouyancy Compensator |
| CCR | Closed Circuit Rebreather |