The Hellenic Coast Guard said the 39-year-old captain and the 48-year-old co-captain of the 57,300-dwt Kosmas V (built 2011) have been held by the authorities.

Four crew members of the Edem Marine-controlled ship fainted while offloading coal from South Africa at the port of Drepanon in western Greece.

One of them was found dead while two others are currently in hospital and another is still in intensive care unit, the coastguard said.

A