2023 ILCA 4 Youth European Championships & Open European Trophy
Coach/support boats registration are now closed (see Notice of Race).
Coaches/Support boats registered
| Country | Name | Estimated supported sailors |
|---|---|---|
 Austria | Barbara MATZ | 6 |
 Croatia | Mario NOVAK | 2 |
| Croatia | Antonio PORETTI | 4 |
 Czech Republic | Stepan NOVOTNY | 6 |
| Czech Republic | Johana ROZLIVKOV | 6 |
 Denmark | Enrique J ROMáN DELGADO | 5 |
 Estonia | Kristiina KLAOS | 1 |
 Finland | Nicolas VIDAL | 6 |
 France | Terrol OLIVIER | 4 |
| France | Pierre GUEGUEN | 5 |
| France | Mathieu DEPLANQUE | 5 |
| France | Emmanuelle LENOIR | 4 |
| France | Jimmy MARCHAND | 6 |
 Germany | Manuel VOIGT | 4 |
 Great Britain | James PARKER-MOWBRAY | 8 |
| Great Britain | Stevie BECKETT | 8 |
 Greece | Nikolaos CHRYSOS | 6 |
| Greece | Alexis KATSIOS | 2 |
| Greece | Harris GKANIATSAS | 10 |
| Greece | George KEFALLONITIS | 6 |
| Greece | Christos CHIONAS | 10 |
| Greece | Orestis STYLIDIS | 5 |
| Greece | Vagelis CHIMONAS | 5 |
| Greece | George FLORIDIS | 4 |
| Greece | Notis KARPOUZAS | 3 |
| Greece | Christos ATZEMIAN | 3 |
 Hungary | Richárd ARATó | 1 |
 India | Madhu PUTHUVAKKKAL | 2 |
| India | Puthuvakkal MADHU | 1 |
| India | Charlie LINSELL | 9 |
 Israel | Gal KLARFELD | 4 |
 Italy | Giacomo SABBATINI | 6 |
| Italy | Marco BARABINO | 4 |
| Italy | Antonio PETROLI | 2 |
| Italy | Gianmarco PLANCHESTAINER | 3 |
| Italy | Nicolo’ ELENA | 2 |
| Italy | Fabio ZENI | 5 |
| Italy | Matteo RAVEGLIA | 4 |
| Italy | Jacopo FAGGIO | 2 |
| Italy | Niccolò RICCI | 6 |
 Malaysia | Muhammad Rezaki SHOIB | 1 |
 Malta | Ruya CAKMAKLI | 1 |
 Netherlands | Julia MARTINS | 4 |
| Netherlands | Dewi COUVERT | 5 |
 Poland | Mateusz HANKE | 7 |
| Poland | Lew GOLDA | 6 |
| Poland | Dawid KANIA | 5 |
| Poland | Wiktor ROBACZEWSKI | 2 |
 Portugal | Jorge ISIDRO | 4 |
| Portugal | Gonçalo PEREIRA DE CARVALHO | 8 |
| Portugal | Joaquim COUTINHO | 6 |
| Portugal | Bernardo LOUREIRO | 10 |
| Portugal | Rui RAIMUNDO | 3 |
| Portugal | Diogo MALHEIRO | 2 |
 Romania | Daniel GIULESCU | 2 |
 Slovenia | Jakob BOZIC | 2 |
 Spain | Pablo MARí GARCíA | 2 |
| Spain | David MARTíNEZ- OLMO MARTíNEZ | 4 |
| Spain | Marcos PLOMER | 8 |
| Spain | Javier VILARIñO SANCHEZ | 5 |
| Spain | Monica AZON | 8 |
| Spain | Alejandro BETHENCOURT FUENTES | 5 |
| Spain | Fatima REYES | 6 |
| Spain | Borja MAS | 5 |
| Spain | Aniol VILAS | 6 |
| Spain | Pablo USERO | 4 |
| Spain | Luis Valentin FERNANDEZ | 8 |
| Spain | Antonio CORONILLA | 6 |
| Spain | Guillermo SOTO PINILLA | 3 |
| Spain | Raul SáNCHEZ LAGO | 4 |
| Spain | Joaquin CORES ABUIN | 4 |
| Spain | José FANDIñO DOCANTO | 5 |
| Spain | Antonio NAVAS | 6 |
| Spain | Lorenzo GARCIA | 3 |
 Switzerland | Theresa LAGLER | 3 |
| Switzerland | Daniel MIHELIC | 5 |
| Switzerland | Noa NINCEVIC | 5 |
| Switzerland | Alberto SPEZIA | 4 |
 Turkey | Utku GONENER | 10 |
| Turkey | Onur DEREBASI | 7 |
| Turkey | Hasan SAL | 10 |
| Turkey | Saruhan çINAY | 2 |
 Ukraine | Uriiy ZHURAVLOV | 5 |
| Ukraine | Oleksiy KAPLUNOV | 1 |
 Cyprus | Juan MAZZINI | 2 |
| Cyprus | Juraj DIVJAKINJA | 2 |