A search is on in southwest France for Pierre Agnes, the 54-year-old CEO of the surf brand Boardriders-formerly Quiksilver-who is presumed lost at sea.
Authorities from the Landes prefecture said winds were mild in the region, but waves nearing 2.5 metres in height were limiting visibility.
According to the World Surf League, Agnes left Capbreton Harbor at 7.30am on Tuesday and his boat was found two hours later.
Mr Agnes had earlier sent a message to port authorities, expressing that he would not be returning until later, because thick fog had set in.
French coastguards are searching for the head of a leading surfing equipment company after his boat was found washed ashore in south-western France.
Agnes often goes fishing in the morning on his "beloved boat" to start his day, Boardriders said.
"Our thoughts and prayers are with his friends and family all at this time, as well as the search and rescue teams", it said.
Agnes, who has worked for Quiksilver for almost 30 years, was appointed CEO in 2015.
Quiksilver and Billabong both started out in Australia more than 40 years ago and used surf culture to sell clothing around the world.
Boardriders, which is 85 percent controlled by USA private equity firm Oaktree Capital, owns the Quiksilver, Roxy and DC Shoes brands.