Luštica Bay Under 21 European Championships & Open European Trophy 2021
Coach/support boats registration are now closed (see Notice of Race).
Coaches/Support boats registered
| Country | Name | Estimated supported sailors |
|---|---|---|
 Belarus | Ekaterina LEVCHUK | 2 |
 Belgium | Jakub KOZELSKY | 2 |
 Cayman Islands | Juan MAZZINI | 1 |
 Croatia | Robert JURINčIć | 5 |
| Croatia | Dominik PERKOVIC | 2 |
| Croatia | Dario KLIBA | 2 |
 Czech Republic | Stepan NOVOTNY | 6 |
 Egypt | Essam ELWY | 2 |
 France | Christophe ESPAGNON | 6 |
| France | Mathieu DEPLANQUE | 5 |
 Germany | Roberto GüLDENPENNING | 6 |
| Germany | Annemarie HARTENBERGER | 1 |
| Germany | Marek JACKOWSKI | 5 |
| Germany | Alexander GOLTZ | 3 |
 Greece | Orestis STYLIDIS | 1 |
 Guatemala | Javier GUITIAN SARRIA | 5 |
 Italy | Fabrizio LAZZERINI | 7 |
| Italy | Antonio PETROLI | 1 |
| Italy | Francesco CARICATO | 3 |
| Italy | Giacomo SABBATINI | 4 |
| Italy | Marco BARABINO | 1 |
| Italy | Fabiano PALAMARA | 1 |
 Peru | Luis Miguel CAMINO | 1 |
 Poland | Anna WEINZIEHER | 6 |
| Poland | Aleksander ARIAN | 5 |
 Russia | Dmitry TERESHKIN | 4 |
| Russia | Andrey STARTSEV | 0 |
| Russia | Vladimir KRUTSKIKH | 3 |
| Russia | Vadim MEKHANIKOV | 3 |
| Russia | Dmitry TERESHKIN | 4 |
 Spain | Javier GUITIAN SARRIA | 5 |
| Spain | Antonio MINGUEZ | 7 |
| Spain | Adrian CRUZ LOPEZ | 5 |
 Switzerland | Pim STUMPEL | 5 |
| Switzerland | Damir NAKRST | 1 |
 Turkey | Mustafa ÇAKıR | 4 |
| Turkey | Onur DEREBAşı | 2 |
 Cyprus | Harris TSOLIS | 1 |
| Cyprus | Polis SARINOPOULOS | 2 |
 Serbia | Miroslav PETKOVIC | 5 |
| Serbia | Branislav ERAC | 1 |