| Acronym | Meaning |
 | DV | Demand Valve |
| CCR | Closed Circuit Rebreather |
| DEMA | Diving Equipment Manufacturers Association |
| HPNS | High Pressure Nervous Syndrome |
| EO | Equipment Officer (BSAC) |
| NITROX | Any Gas Mixture Of Nitrogen And Oxygen; Though Most Commonly Used For Oxygen Mixtures Above The Normal 21 Per Cent. |
| DCS | Decompression Sickness |
| RD | Rescue Diver (PADI) |
| SAR | Search And Rescue/Recovery |
| SAA | Sub-Aqua Association |
Browse by Letter:
