| Acronym | Meaning |
 | EO | Equipment Officer (BSAC) |
| CCR | Closed Circuit Rebreather |
| OWSI | Open Water SCUBA Instructor (PADI) |
| SAA | Sub-Aqua Association |
| NITROX | Any Gas Mixture Of Nitrogen And Oxygen; Though Most Commonly Used For Oxygen Mixtures Above The Normal 21 Per Cent. |
| NI | National Instructor (BSAC) |
| DCAP | Decompression Computation And Analysis Program |
| DM | Dive Master (PADI) |
| OD | Ocean Diver (BSAC) |
| DIN | Deutsches Insitut Fuer Normung |
Browse by Letter:
