| Name | Boats | Last known start |
|---|---|---|
| Cullen Hughes | As a helmsman in 2025 in the World Championship on 9136 | |
| Curt Holden | ||
| Curt Lestrup | As a helmsman in 2013 in the Svenskt Mästerskap on 8945 | |
| Curtis Hartmann | As a crew in 2021 in the East Coast Championship on 9165 | |
| Curtis Hutchinson | ||
| Cynthia des Brisay | As a helmsman in 2024 in the Cinco de 5o5 on 8866 | |
| Cyril Thibaud | As a crew in 2012 in the World Championship on 9099 | |
| D. Bayfield | As a crew in 1980 in the UK National Championship on 6944 | |
| D. Birrell | ||
| D. Boinot | ||
| D. Buckle | ||
| D. C. Johnson | ||
| D. Davison | ||
| D. E. Hooper | ||
| D. G. Halstead | ||
| D. Green | ||
| D. Hamer | ||
| D. Henty | ||
| D. Horsfall | ||
| D. Illman |