| Acronym | Meaning |
 | PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
| LP | Low Pressure |
| CESA | Controlled Emergency Swimming Ascent |
| DAN | Divers Alert Network |
| BHA | British Hyperbaric Association |
| DIR | Doing It Right |
| RYA | Royal Yachting Association |
| TP | Test Pressure |
| OWIC | Open Water Instructor Course (BSAC) |
| OWI | Open Water Instructor (BSAC) |
Browse by Letter:
