| Acronym | Meaning |
 | AMDT | Adjusted Maximum Dive Time |
| AI | Assistant Instructor (PADI) Advanced Instructor (BSAC) |
| DCS | Decompression Sickness |
| SPG | Submerssible Pressure Guage |
| NAUI | National Association Of Underwater Instructors |
| DPV | Diver Propulsion Vehicle |
| VENTID | Vision Ears Nausea Twitiching Irritation Dizziness |
| DV | Demand Valve |
| TDT | Total Dive Time |
| DCI | Decompression Illness |
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