| Abbreviation | Definition |
|---|---|
| SFDH | South Florida Diving Headquarters |
| SJDA | South Jersey Diving Association |
| SPDB | Self propelled diving bell |
| SRDRS | Submarine Rescue Diving Recompression System |
| SSDC | South Shore Diving Club |
| SSDE | Surface Supplied Diving Equipment |
| TIDF | The Israeli Diving Federation |
| TSDC | Tasmanian Scuba Diving Club |
| UDWG | Underwater Diving Working Group |
| UTD | Unified Team Diving |
| UTDA | United Technical Diving Association |
| UVD | Upper Valley Diving |
| WCPD | Windy City/ Patriot Diving |
| WHDF | World High Diving Federation |
| WHDP | Whenua Hou Diving Petrel |
| WOSD | World Organisation of Scuba Diving |