| Acronym | Meaning |
 | DCI | Decompression Illness |
| BWRAF | Buoyancy |
| SI | Surface Interval |
| HP | High Pressure |
| ITS | Instructor Training Scheme (BSAC) |
| AI | Assistant Instructor (PADI) Advanced Instructor (BSAC) |
| RIB | Rigid-Hulled Inflatable Boat |
| PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
| IOC | Instructor Orientation Course (PADI) |
| OWI | Open Water Instructor (BSAC) |
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