| Acronym | Meaning |
 | SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| SAA | Sub-Aqua Association |
| BCD | Buoyancy Control Device |
| BWRAF | Buoyancy |
| DEMA | Diving Equipment Manufacturers Association |
| ROV | Remotly Operated Vehicle |
| BHA | British Hyperbaric Association |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| AMDT | Adjusted Maximum Dive Time |
| TNT | Total Nitrogen Time |
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