| Acronym | Meaning |
| DCS | Decompression Sickness |
| DIN | Deutsches Insitut Fuer Normung |
| BT | Bottom Time |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| VENTID | Vision Ears Nausea Twitiching Irritation Dizziness |
| PSI | Pounds Per Square Inch |
| PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
| ROV | Remotly Operated Vehicle |
| SI | Surface Interval |
| MSD | Master SCUBA Diver (PADI) |