| Acronym | Meaning |
 | END | Equivalent Narcotic Depth |
| IAND | International Association Of Nitrox Divers |
| PSI | Pounds Per Square Inch |
| CNS | Central Nervous System |
| MDT | Maximum Dive Time |
| MCA | Maritime And Coastguard Agency |
| TDT | Total Dive Time |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| DCAP | Decompression Computation And Analysis Program |
| RIB | Rigid-Hulled Inflatable Boat |
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