| Acronym | Meaning |
 | NI | National Instructor (BSAC) |
| GPS | Global Positioing System |
| AI | Assistant Instructor (PADI) Advanced Instructor (BSAC) |
| CCR | Closed Circuit Rebreather |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| ROV | Remotly Operated Vehicle |
| OWIC | Open Water Instructor Course (BSAC) |
| MSD | Master SCUBA Diver (PADI) |
| ATA | Atmospheres Absolute |
| C-CARD | Scuba Diving Certification Card. |
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