| Acronym | Meaning |
 | MCA | Maritime And Coastguard Agency |
| DEMA | Diving Equipment Manufacturers Association |
| GMDSS | Global Maritime Distress And Safety System |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| AIC | Advanced Instructor Course (BSAC) |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| CESA | Controlled Emergency Swimming Ascent |
| ATA | Atmospheres Absolute |
| DSMB | Delayed Surface Marker Buoy |
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