2023 ILCA U21 Europeans & Open European Trophy
Coach/support boats registration are now closed (see Notice of Race).
Coaches/Support boats registered
| Country | Name | Estimated supported sailors |
|---|---|---|
 Belgium | Stefan DE VRIES | 3 |
| Belgium | Ingrid BELLEMANS | 3 |
 Bulgaria | Nikolay VASILEV | 1 |
 Chinese Taipei | Eshed MESERITZ | 1 |
 Croatia | Toma VISIC | 1 |
| Croatia | Emil TOMASEVIC | 1 |
| Croatia | Noa NINCEVIC | 4 |
 Denmark | Jesper HEEGAARD | 1 |
| Denmark | Michala NORSELL | 6 |
| Denmark | Jan CHRISTIANSEN | 5 |
| Denmark | Rainer WOLFF | 1 |
 Estonia | Andres JUUL | 2 |
 France | Mathieu DEPLANQUE | 5 |
| France | Roman DUSSAIN | 3 |
 Germany | Paul WIESENER | 5 |
| Germany | Franziska GOLTZ | 5 |
| Germany | Jürgen WANDEL | 3 |
 Great Britain | Miguel ANDRADE | 6 |
| Great Britain | Ali YOUNG | 8 |
| Great Britain | Charlie LINSELL | 6 |
| Great Britain | Keith VIDELO | 6 |
 Greece | Nikolaos CHRYSOS | 2 |
| Greece | Harris GKANIATSAS | 0 |
| Greece | Leonidas ALYGIZAKIS | 1 |
 Italy | Lucas SWAN | 6 |
| Italy | Giacomo SABBATINI | 6 |
| Italy | Matteo RAVEGLIA | 6 |
| Italy | Francesco MARRAI | 5 |
| Italy | Ricci NICCOLò | 5 |
| Italy | Francesco CARICATO | 4 |
 Netherlands | Marc DE HAAS | 5 |
| Netherlands | Paul HAMEETEMAN | 1 |
 Norway | Esben KAASTAD | 3 |
| Norway | Michail FLOROS | 3 |
| Norway | Harald KLæBOE | 1 |
| Norway | Emilie Kathrin VABø | 6 |
| Norway | Kevin CABRERA | 3 |
 Poland | Aleksander ARIAN | 6 |
| Poland | Anna WEINZIEHER | 4 |
| Poland | Mateusz HANKE | 6 |
 Portugal | Rui SILVEIRA | 3 |
 Slovenia | Matija ČOK | 4 |
 Spain | David MARTíNEZ | 6 |
| Spain | Ramiro FOGUET | 6 |
| Spain | Borja MAS | 6 |
 Sweden | Fredrik LASSENIUS | 8 |
 Switzerland | Raffaele RAVAGLIA | 4 |
| Switzerland | Lauri KALKKINEN | 3 |
| Switzerland | Damien IEHL | 3 |
 Ukraine | Anastasiia KOLOMIIETS | 2 |