Coast Guard in the southernmost province of Ca Mau on Friday said they were taking care of a Thai man who had been found drifting at sea a week earlier by Vietnamese fishermen.
Tran Anh Duc, captain of the Vietnamese fishing boat, took Chanamporn Chaiyaporn, 19, to Ca Mau coast guard station on Wednesday, five days after his sailors found Chaiyaporn clinging to a lifebuoy in waters off the provincial seaport of Rach Goc.
Duc said they didn't know what had happened to the man since he did not speak Vietnamese.
According to Ca Mau Coast Guard, Chaiyaporn said he worked on board a Thai fishing boat where he was frequently beaten by the captain. Overworked, he decided to jump into the sea to escape.
The Coast Guard said Chaiyaporn is in a stable condition.
According to a report by the Environmental Justice Foundation (EJF), a British-based human rights charity, in March 2014, the Thai fishing and seafood industry, worth $7 billion annually, involves considerable exploitation of workers, especially trafficked migrant laborers.