| Acronym | Meaning |
![](file.png) | SSI | Scuba Schools International; Diving Instruction Organization. |
![](file.png) | MSD | Master SCUBA Diver (PADI) |
![](file.png) | BC | Bouyancy Compensator |
![](file.png) | NASDS | National Association Of Scuba Diving Schools; Diving Instruction Organization. |
![](file.png) | HPNS | High Pressure Nervous Syndrome |
![](file.png) | PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
![](file.png) | IDC | Instructor Development Course (PADI) |
![](file.png) | SPG | Submerssible Pressure Guage |
![](file.png) | RNT | Residual Nitrogen Time |
![](file.png) | RDP | Recreational Dive Planner |