| Acronym | Meaning |
 | DPV | Diver Propulsion Vehicle |
| EAR | Expired Air Resuscitation |
| HP | High Pressure |
| MCS | Marine Conservation Society |
| AAS | Alternate Air Source |
| NI | National Instructor (BSAC) |
| ROV | Remotly Operated Vehicle |
| SCUDA | Self Contained Underwater Drinking Apparatus. Product That Can Be Used To Drink Underwater. |
| CNS | Central Nervous System |
| HSE | Health And Safety Executive |
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