Around 2:30 a.m. Wednesday, crew members on board the Carnival Ecstasy said a woman "was reportedly seen falling overboard," according to the Coast Guard. A Carnival spokesperson said the ship guest "was witnessed jumping overboard."
The woman was wearing a white dress with pink floral, the Coast Guard said.
The ship was about 15 miles off the coast of Grand Bahama island at the time, the cruise line said. Coast Guard air and boat crews have launched a search.
The ship was en route from Nassau, Bahamas, to Charleston, South Carolina, at the time. The ship is expected to arrive in Charleston, where it is based, on Thursday, according to the Coast Guard and Carnival.
A Carnival spokesperson said in a statement, "The company’s CareTeam is providing assistance and support to the missing guest’s family on board and our thoughts and prayers are with her and family and loved ones during this difficult time."