A man went overboard while on a luxury ship that was passing south of Hawaii.
On Tuesday evening, an Australian passenger fell from the Quantum of the Seas cruise ship as it was traveling in the Pacific Ocean.
The US Coast Guard, including its air crews, is conducting a continuous search for him.
The crew of the ship spent about two hours searching for him after he had been declared overboard. They deployed six life rings.
Royal Caribbean International also informed the Coast Guard about this cruise.
In just a few hours, the Hercules crew had been deployed south of Kailua Kona to search for the missing aircraft.
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The crew returned to Honolulu after six hours to get fuel. The coastguard said they would continue their search on Thursday.
The luxury cruise ship that hosts a variety of activities and entertainment was at sea for fifteen days, and was scheduled to dock in Honolulu, Hawaii, on Friday.
The man who has been missing is still unidentified.
Sky News has reached out to Royal Caribbean for a comment.