| Acronym | Meaning |
 | ROV | Remotly Operated Vehicle |
| PP | Partial Pressure |
| TDT | Total Dive Time |
| DEMA | Diving Equipment Manufacturers Association |
| OW | Open Water Certification; First Certification Level. |
| DCAP | Decompression Computation And Analysis Program |
| DAN | Divers Alert Network |
| OW(D) | Open Water (Diver) (PADI) |
| DM | Dive Master (PADI) |
| HPNS | High Pressure Nervous Syndrome |
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