| Acronym | Meaning |
| EAR | Expired Air Resuscitation |
| SWP | Safe Working Pressure |
| DIN | Deutsches Insitut Fuer Normung |
| DO | Dive Officer (BSAC) |
| RD | Rescue Diver (PADI) |
| SAR | Search And Rescue/Recovery |
| AA | Assisted Ascent |
| HP | High Pressure |
| SCUDA | Self Contained Underwater Drinking Apparatus. Product That Can Be Used To Drink Underwater. |
| SSI | Scuba Schools International; Diving Instruction Organization. |