| Acronym | Meaning |
 | DM | Dive Master (PADI) |
| SAR | Search And Rescue/Recovery |
| RD | Rescue Diver (PADI) |
| BC | Bouyancy Compensator |
| LP | Low Pressure |
| DO | Dive Officer (BSAC) |
| PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
| MCA | Maritime And Coastguard Agency |
| DCAP | Decompression Computation And Analysis Program |
| RIB | Rigid-Hulled Inflatable Boat |
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