Freddy Wood overcame his nerves to be crowned RS National Tera champion after a stunning performance in County Durham.
The sailor, 12, from Portsmouth Grammar School, came out on top in a hotly-contested battle between 103 boats.
Everything was on the line going into the final race of 10 and Hayling Island Sailing Club member Wood had to keep calm to deliver the goods.
He said: ‘It was a really tough competition with very shifty wind conditions, so it feels really amazing to have won the event.
‘Before the last race I have never felt so nervous and it was the best feeling ever when I finished that race ahead of my main rivals.’
The competition was held over three days at Derwent Reservoir Sailing Club.
Wood led from day one but his rivals were strong and ensured the result was not decided until after the final race.