It was this morning confirmed to be that of Lionel Clochey, who had set out alone from St Brieuc, in Brittany, on Thursday morning bound for Sark.
The 43-year-old Frenchman made his final radio contact at midday on Thursday.
Investigators were today still trying to piece together what happened.
French and Channel Island coastguards launched the full-scale rescue operation on Friday evening following reports of a yacht adrift six miles south of Corbière.
The skipper of a Dutch yacht raised the alarm on arrival in St Helier that evening after seeing the apparently unmanned sailing vessel in the afternoon.