Individual found overboard and unconscious in French waters in early hours of Friday
Search and rescue teams were called to a small vessel near the beaches of north town Berck-sur-Mer, where at least one person was overboard, French maritime authorities said.
Twenty-five individuals who remained on board were towed to the coast, while five were recovered from a sandbank by firefighters.
One man, reportedly a Sudanese national aged around 20, was unconscious and was declared dead after being taken back to shore.
An investigation has been launched into the incident by the Boulogne-sur-Mer prosecutor.
The latest attempts at the dangerous journey come despite sub-zero temperatures on the French coast.
At least 271 people aboard 10 small boats reached the UK on Thursday, including a young child.
So far this year, more than 450 people have made the life-threatening trip across the Channel in small boats following a record-breaking year in 2021.