| Acronym | Meaning |
 | ROV | Remotly Operated Vehicle |
| ABT | Actual Bottom Time |
| NAUI | National Association Of Underwater Instructors |
| OWSI | Open Water SCUBA Instructor (PADI) |
| OW(D) | Open Water (Diver) (PADI) |
| AIC | Advanced Instructor Course (BSAC) |
| SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| AOW | Advanced Open Water |
| DCS | Decompression Sickness |
| SSI | Scuba Schools International; Diving Instruction Organization. |
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