| Acronym | Meaning |
 | CESA | Controlled Emergency Swimming Ascent |
| BHA | British Hyperbaric Association |
| MSDT | Master SCUBA Diver Trainer (PADI) |
| DSMB | Delayed Surface Marker Buoy |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| PPB | Peak Performance Bouyancy |
| SPG | Submerssible Pressure Guage |
| IAND | International Association Of Nitrox Divers |
| DV | Demand Valve |
| BCD | Buoyancy Control Device |
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