| Name | Boats | Last known start |
|---|---|---|
| Isabelle Beaudoin | As a crew in 2000 in the Eastern Canadian Championship on 7950 | |
| Ivan Lui | ||
| Ivan Sharpe | As a crew in 1984 in the UK National Championship on 7579 | |
| Ivo Vollering | As a crew in 2021 in the Joachim Hunger Gedächtnispreis on 9057 | |
| Ivonne Seifert | As a crew in 2019 in the Oktoberfestpreis on 8861 | |
| Ivonne Werner | As a crew in 2004 in the Régional Est on 8519 | |
| Iwo Gogołkiewicz | As a crew in 2025 in the Ustka Charlotta Sailing Days on 8656 | |
| J Biander | ||
| J. A. Berry | ||
| J. A. Bullock | ||
| J. A. M. Clarke | ||
| J. Audouin | ||
| J. B. Eales | ||
| J. B. Leroy | ||
| J. Boulderson | ||
| J. Bremmell | ||
| J. Bunny | ||
| J. Burdett | ||
| J. C. Bowles | ||
| J. C. Collaert |