| Abbreviation | Definition |
|---|---|
| NAYYC | National Association of Yachtsmen and Yacht Clubs |
| NGY | Neptune Group Yachting |
| NYYC | New York Yacht Club |
| OLYC | Okauchee Lake Yacht Club (Oconomowoc, WI) |
| OYC | Oakland Yacht Club |
| OYC | Occoquan Yacht Club |
| OYC | OceansideYacht Club |
| OYC | Ogallala Yacht Club |
| OYC | Okoboji Yacht Club |
| OYC | Onigaming Yacht Club |
| OYC | Orwell yacht Club |
| OYC | Oswego Yacht Club |
| OYC | Outriggery Yacht Club |
| OYC | Ozarks Yacht Club |
| OYD | Offshore Yacht Deliveries |
| OYD | Overing Yacht Design |
| OYD | overing yacht designs |
| OYS | Oakville Yacht Squadron |
| PCYA | Pacific Coast Yachting Association |
| PCYC | Pacific Corinthian Yacht Club |