The US Coast Guard is searching for a passenger who fell overboard from a Royal Caribbean Cruises ship.

The agency said David Mossman, a 46-year-old Texan, fell from the 3,110-berth Navigator of the Seas (built 2002) Saturday morning off Key Largo, Florida.

He fell from the 10th deck, which is about 100 feet (30 metres) up.

“An urgent marine information broadcast was issued and the Coast Guard Cutter Gannet was launched to begin searching for Mossman,” the agency said.

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