| Acronym | Meaning |
 | CAGE | Cerebral Arterial Gas Embolism |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| AA | Assisted Ascent |
| TO | Training Officer (BSAC) |
| NITROX | Any Gas Mixture Of Nitrogen And Oxygen; Though Most Commonly Used For Oxygen Mixtures Above The Normal 21 Per Cent. |
| HID | High Intensity Discharge |
| DO | Dive Officer (BSAC) |
| DCAP | Decompression Computation And Analysis Program |
| RIB | Rigid-Hulled Inflatable Boat |
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