| Acronym | Meaning |
| MDT | Maximum Dive Time |
| SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| RD | Rescue Diver (PADI) |
| END | Equivalent Narcotic Depth |
| PADI | Professional Association Of Diving Instructors |
| RIB | Rigid-Hulled Inflatable Boat |
| MCS | Marine Conservation Society |
| SPG | Submerssible Pressure Guage |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| AGE | Aterial Gas Embolism |