| Acronym | Meaning |
| RSTC | Recreational Scuba Training Council. Organization That Sets Basic Guidelines For Scuba Diving Agencies. |
| AIE | Advanced Instructor Exam (BSAC) |
| ABT | Actual Bottom Time |
| SCUDA | Self Contained Underwater Drinking Apparatus. Product That Can Be Used To Drink Underwater. |
| NITROX | Any Gas Mixture Of Nitrogen And Oxygen; Though Most Commonly Used For Oxygen Mixtures Above The Normal 21 Per Cent. |
| DCAP | Decompression Computation And Analysis Program |
| DSMB | Delayed Surface Marker Buoy |
| END | Equivalent Narcotic Depth |
| ITC | Instructor Training Course (BSAC) |
| AA | Assisted Ascent |