The man died after falling from the cruise ship Symphony of Seas (Image: AFP)

A man died when he fell overboard the largest cruise ship in the world on the US Virgin Islands.

The man, who is believed to be Australian, fell on Thursday morning from the Royal Caribbean cruise ship as he traveled from St. Kitts to St. Thomas.

Royal Caribbean announced that the ship was turned immediately to the Symphony of Seas and a lifeboat was launched to save him.

But after a comprehensive search, his body was salvaged by crew members.

Nickella Battle, a reporter from 7News Miami, who was on the ship at the time, said she heard the news when she was at the room's balcony at about 3:30.

The man fell off the ship from St. Kitts (Photo: Getty)

"The captain was on the intercom. He said, "Oh, a man fell overboard and unfortunately passed away." This happened around 4 in the morning, "said Miss Battle.

"I looked from my balcony and everyone was stunned. They could see how everyone was on their trail. "

A statement by Royal Caribbean Cruises states: "We are deeply saddened by the tragic incident that occurred this morning on the way to Saint Thomas on the Symphony of the Seas.

"Our heart is for the family and their loved ones for their loss, and our care team provides support and help during this difficult time."

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He is reportedly considered an Australian citizen, but his identity has not been revealed.

Royal Caribbean Cruises added that it is working with officials to investigate the circumstances of the incident and assist in the investigation.

The Symphony of the Seas has continued its journey ever since and will return to its usual port in Miami, Florida on Saturday.