| Abbreviation | Definition |
|---|---|
| FD | Flush Deck |
| FKY | Freundeskreis Klassische Yachten |
| FYBA | Florida Yacht Brokers Association |
| FYM | Forth Yacht Marina |
| GYA | Greek Yachting Association |
| GYA | Gulf Yachting Association |
| GYB | Galveston Yacht Basin |
| GYC | General yachting Center |
| GYW | Gulf Yachting World |
| HHYC | Hebe Haven Yacht Club (Hong Kong) |
| HHYC | Henderson Harbor Yacht Club (Henderson Harbor, NY) |
| HHYC | Huntington Harbour Yacht Club (Huntington Beach, CA) |
| HYS | Hamble Yacht Services |
| IGY | Island Global Yachting |
| ILYA | Inter Lake Yachting Association |
| IPY | Island Packet Yachts |
| IYPO | International Yacht Pages Online |
| IYR | International Yacht Register |
| IYS | International Yachting Solutions |
| JYC | Jamestown Yacht Club |