KINGSTON, Jamaica (AP) — Two Canadians and two Americans attempting to set a world record for an unassisted, human-powered row across the Atlantic Ocean have been rescued after a rogue wave capsized their boat after 73 days at sea, the U.S. Coast Guard and organizers said Sunday.

The four endurance rowers, including Canadian Olympic gold medalist Adam Kreek, were rescued from waters some 400 miles (645 kilometers) north of the U.S. Caribbean island of Puerto Rico. They were attempting to row more than 4,000 miles (6,700 kilometers) between the West African nation of Senegal and Miami and set a Guinness World Record.