| Abbreviation | Definition |
|---|---|
| BYC | Belleville Yacht Club |
| BYC | Bellingham Yacht Club |
| BYC | Benicia Yacht Club |
| BYC | Berkeley Yacht Club |
| BYC | Beverly Yacht Club |
| BYC | Boston Yacht Club |
| BYC | Bradenton Yacht Club |
| BYC | Breakwater Yacht Club |
| BYC | Bremerton Yacht Club |
| BYC | British Yacht Club |
| BYRA | Bayview Yacht Racing Association (Australia) |
| BYRA | Blackwater Yacht Racing Association (Smith Mountain Lake, VA) |
| BYS | Blairgowrie Yacht Squadron |
| BYY | Brewer Yacht Yards |
| CBYRA | Chesapeake Bay Yacht Racing Association |
| CCY | Cumberland Charter Yachts |
| COK | Cook Islands |
| COLYC | Columbia Yacht Club (Chicago, Illinois) |
| CORC | Canberra Ocean Racing Club |
| CRYA | Canadian Radio Yachting Association |