| Acronym | Meaning |
 | OWI | Open Water Instructor (BSAC) |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| CESA | Controlled Emergency Swimming Ascent |
| DAN | Divers Alert Network |
| AAS | Alternate Air Source |
| RSTC | Recreational Scuba Training Council. Organization That Sets Basic Guidelines For Scuba Diving Agencies. |
| BWRAF | Buoyancy |
| CNS | Central Nervous System |
| PP | Partial Pressure |
| OWIC | Open Water Instructor Course (BSAC) |
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