| Acronym | Meaning |
| NAUI | National Association Of Underwater Instructors |
| AGE | Aterial Gas Embolism |
| DCAP | Decompression Computation And Analysis Program |
| OWIC | Open Water Instructor Course (BSAC) |
| HID | High Intensity Discharge |
| GPS | Global Positioing System |
| VGE | Venous Gas Embolism |
| PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
| SCUDA | Self Contained Underwater Drinking Apparatus. Product That Can Be Used To Drink Underwater. |
| ITS | Instructor Training Scheme (BSAC) |