| Acronym | Meaning |
| HP | High Pressure |
| DO | Dive Officer (BSAC) |
| VGE | Venous Gas Embolism |
| NASDS | National Association Of Scuba Diving Schools; Diving Instruction Organization. |
| AI | Assistant Instructor (PADI) Advanced Instructor (BSAC) |
| MSDT | Master SCUBA Diver Trainer (PADI) |
| AMDT | Adjusted Maximum Dive Time |
| MSD | Master SCUBA Diver (PADI) |
| DPV | Diver Propulsion Vehicle |
| HPNS | High Pressure Nervous Syndrome |