Pierre Agnès set sail on Tuesday morning but did not return.
A desperate search off the coast of southwest France is underway for the chief executive of surf wear company Quiksilver after his empty boat was found washed ashore.
Quicksilver recently changed its name to Boardriders, regrouping its other brands including surf and snowboard women's brand Roxy and skateboard footwear brand DC Shoes.
His boat was found by maritime authorities of the Atlantic beach town of Capbreton near Hossegor after Mr Agnes sent a message to port authorities indicating that he was delaying his return because of thick fog.
Boats and helicopters are involved in the search being led by the French coastguard.
Rough seas were reported in the search area, though wind was light and visibility good.
Quiksilver, which was founded in Australia, makes clothing for surfers and surfing aficionados.
Quiksilver's parent company, Boardriders Inc., now controls an extensive portfolio of action sports brands including Quiksilver, Roxy, DC Shoes, Billabong, RVCA, Element, VonZipper, and Xcel. Later in the morning his boat was recovered on the beach near his hometown and Pierre has not been heard from since.
The company filed for Chapter 11 bankruptcy protection months after Agnes took the helm, emerging in 2016.
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