Radial Youth 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 |
|---|---|---|
 Bermuda | Somers KEMPE | 1 |
 Croatia | Domink PERKOVIC | 3 |
| Croatia | Dario KLIBA | 2 |
| Croatia | Robert JURINčIć | 3 |
| Croatia | Edvard MRšIć | 1 |
| Croatia | Theo PIZZUL | 2 |
 Czech Republic | Stepan NOVOTNY | 0 |
 Denmark | Christine HEEGAARD | 4 |
| Denmark | Per BAAGOE | 2 |
 Estonia | Alo TAMM | 1 |
| Estonia | Stefan DE VRIES | 6 |
 France | Delorme ALEXANDRE | 8 |
| France | Theo CONSTANCE | 7 |
 Germany | Roberto GüLDENPENNING | 6 |
| Germany | Annemarie HARTENBERGER | 1 |
| Germany | Michael SCHüRER | 1 |
| Germany | Paul KEßLER | 3 |
 Great Britain | Darron HOWARTH | 2 |
| Great Britain | Richard MORRIS | 3 |
| Great Britain | Suria MORRIS | 3 |
 Greece | Michalis KARASTAMATIS | 3 |
| Greece | Dimitrios THEOLOGIS | 2 |
| Greece | George KEFALLONITIS | 3 |
| Greece | Charis GKANIATSAS | 3 |
| Greece | Vagelis CHIMONAS | 4 |
 Hungary | Gaszton PáL | 3 |
| Hungary | Jozsef CSOMAI | 5 |
| Hungary | Áron BAGYó | 3 |
 Ireland | Diogo PONTES | 6 |
| Ireland | Sue MONSON | 4 |
 Israel | Erez ELIAHOU | 5 |
 Italy | Fabrizio LAZZERINI | 7 |
| Italy | Raffaele RAVAGLIA | 5 |
| Italy | Erberto SIBILIA | 2 |
| Italy | Matteo RAVEGLIA | 7 |
| Italy | Emanuele BELGRANO | 2 |
| Italy | Marco PONTI | 4 |
| Italy | Valerio BRIGHENTI | 5 |
| Italy | Nicola CAPRIGLIONE | 5 |
| Italy | Francesco CARICATO | 4 |
| Italy | Giovanni MAGLIULO | 2 |
| Italy | Andrea PATACCA | 3 |
| Italy | Riccardo SANGIULIANO | 4 |
| Italy | Andrea LAVIOSA | 3 |
| Italy | Arianna BOGATEC | 1 |
| Italy | Federico LEARDINI | 6 |
| Italy | Riccardo URBANI | 4 |
| Italy | Mauro TROVò | 2 |
| Italy | Paolo GIARGIA | 3 |
 Latvia | Zaklina LITAUNIECE | 2 |
 Lithuania | Laurynas RIMSAS | 4 |
 Malta | Mario AQUILINA | 1 |
 Netherlands | Marc DE HAAS | 6 |
 Norway | Pim STUMPEL | 1 |
 Poland | Anna WEINZIEHER | 6 |
| Poland | Wojciech JANUSZ | 0 |
| Poland | Andrzej OGRODNIK | 4 |
| Poland | Dawid KANIA | 6 |
| Poland | Waclaw SZUKIEL | 5 |
| Poland | Mateusz HANKE | 3 |
| Poland | Lew GOLDA | 5 |
 Portugal | Manuel ROSA | 1 |
| Portugal | Miguel ROUXINOL | 1 |
| Portugal | Joaquim COUTINHO | 2 |
 Russia | Vadim MEKHANIKOV | 5 |
| Russia | Andrey STARTSEV | 4 |
| Russia | Vladimir KRUTSKIKH | 2 |
| Russia | Mikhail UTKIN | 1 |
| Russia | Denis GAYDAENKO | 1 |
| Russia | Anastasia MALETINA | 3 |
| Russia | Maxim SEMERKHANOV | 3 |
 Slovak Republic | Michal ANDEL | 2 |
 Slovenia | Matija ČOK | 3 |
| Slovenia | Jakob BOZIC | 5 |
 Spain | Chris RUSSELL | 6 |
| Spain | Lucia REYES | 6 |
| Spain | Juan Antonio GOMARIZ SOLANO | 6 |
| Spain | Carla PAOLI | 6 |
 Sweden | Niklas NORLéN | 1 |
 Switzerland | Raffaele RAVAGLIA | 5 |
| Switzerland | Damir NAKRST | 5 |
| Switzerland | Nils THEUNINCK | 2 |
| Switzerland | Daniel MIHELIC | 7 |
 Turkey | Onur DEREBASİ | 5 |
| Turkey | Mustafa ÇAKıR | 0 |
 United States of America | Miguel ANDRADE | 6 |
 Algeria | Per BAAGOE | 2 |
 Cyprus | Harris TSOLIS | 2 |
| Cyprus | Polis SARINOPOULOS | 2 |