| Name | Boats | Last known start |
|---|---|---|
| J. Voysey | ||
| J. W. Bradley | ||
| J. W. Davies | ||
| J. W. Goody | ||
| J. Williams | ||
| J. Winwood | As a helmsman in 1966 in the World Championship on 2093 | |
| J.A. Burke | ||
| J.B. Ferrarone | As a crew in 2002 in the Midwinter Championship on 7068 | |
| J.B. Parrington | ||
| J.D. Gilder | As a helmsman in 1978 in the Australian National Championships on 0 | |
| J.D. McMahan | ||
| J.E. Thompson | ||
| J.J. McKeon | ||
| J.L. Mahe | As a crew in 1974 in the Championnat de Ligue on 5062 | |
| J.M. Placchi | ||
| J.P. Thomas | ||
| J.W. Bruce | ||
| J.W. Davidson | ||
| Jacek Barankiewicz | As a crew in 2009 in the Śródlądowe Mistrzostwa Polski on 8358 | |
| Jacek Baryła | As a helmsman in 2015 in the Puchar Burmistrza Krynicy Morskiej on 8129 |