| Abbreviation | Definition |
|---|---|
| RLSC | Rudyard Lake Sailing Club |
| RNSA | Royal Naval Sailing Association |
| RS | Road Sailing |
| S | Sailing |
| SAIL | Sailing |
| SAISA | South Atlantic Interscholastic Sailing Association |
| SARF | Sailing And Rowing Federation |
| SASC | South American Sailing Confederation |
| SATO | Sailing Across The Ocean |
| SBSC | Scarborough Bluffs Sailing Club |
| SBTW | Sailing Before The Wind |
| SCOO | Sailing Club Of Oriental |
| SCOW | Sailing Club of Washington |
| SCY | Sailing Crewed Yacht |
| SISO | Southern Idaho Sailing Outreach |
| SLSC | Saratoga Lake Sailing Club |
| SMSA | Southern Ma Sailing Association |
| SMWA | Southern Maryland Windsurfing Association |
| SSA | Severn Sailing Association |
| SSEE | Ship's Signal Exploitation Equipment |