| Acronym | Meaning |
 | ADT | Actual Dive Time |
| RDP | Recreational Dive Planner |
| EFR | Emergency First Response |
| MCA | Maritime And Coastguard Agency |
| VGE | Venous Gas Embolism |
| CMAS | Confederation Moniale Des Activities Subaquatiques |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| NASDS | National Association Of Scuba Diving Schools; Diving Instruction Organization. |
| DCS | Decompression Sickness |
| RIB | Rigid-Hulled Inflatable Boat |
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