- J-Class Association
 - Official class association site with news, history, photo galleries, and events. - International J/24 Class Association
- Includes upcoming events, news, a class history, photos, and classifieds.
- J-105 Fleet 1 - San Francisco
- Home to the San Francisco Bay Area one-design yacht racing class.
- J/105 Class Association
- Official association page with fleet information, a racing calendar, and online forum.
- J/35 Class Association
- Includes photo album, fleet news, and more.
- J/35 Fleet 5 - San Francisco
- Includes a calendar of events, racing results, and photos.
- JBoats, Inc.
- Official site for the boat maker with monthly updates, brochures, articles, links, and regatta schedules
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