Coast Guard spokesman Ricardo Castrodad said the incident involved the Oasis of the Seas ship.
Three fishermen were rescued Tuesday night after the U.S. Coast Guard found their boat capsized near Coos Bay, Oregon.
Documents filed in federal court allege the vessel, which was owned by Truth Aquatics, was "unseaworthy."
The ship’s pilot and 23 crew members were all safely rescued, including four men trapped for 36 hours.
James Wells was convicted in October of killing Electrician's Mate First Class James Hopkins and Richard Belisle.
Eight of the Cuban migrants were repatriated to Cuba on Saturday.
Coast Guard officials at the command center in Seattle received four alerts as well as several witness reports.
The Coast Guard dispatched a C-27 Spartan airplane from Sacramento and an MH-60 Jayhawk helicopter from San Diego.
The crew of an MH-65 Dolphin helicopter from Air Station Atlantic City rendezvoused with the ship and winched the man.
There are growing questions about whether the operator of the Conception regularly had roving watches on its boats.