The Coast Guard said it suspected people smuggling.
The rescued person told authorities that he had left Bimini, Bahamas with 39 others on Saturday night, and that they were faced with severe weather that caused the boat to capsize.
According to the survivor, no one on board the ship was wearing a life jacket.
As of now, the Coast Guard is the only agency dealing with rescue efforts, the US Southeast Coast Guard told DailyExpertNews. The search area extends from 75 miles east of Fort Pierce Inlet to Bimini.