Marc Thiercelin, known as "Captain Marck", is a French professional yachtsman, born on October 29, 1960, in Saâcy-sur-Marne (Seine-et-Marne).

He totals five solo rounds of the world together with 22 transatlantic races, seven editions of the Solitaire du Figaro (two stage wins) and five Tour de France sailing.

He completed four complete tours of Antarctica and four solo Cape Horns for a total of 700,000 km covered on all the world's oceans.

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