Cruising around Balearic waters....
The 85-meter (279-foot) superyacht Valerie belongs to Sergei Chemezov, a former KGB officer.
APEX 850 yacht.
The adverse weather is believed to have led to the incident.
Luxury yacht was on the hard undergoing repairs and a refit.
The body on board was that of a French yachtsman, identified as Ceresne Poilippe.