"Fifteen members on the ship were rescued today (Thursday) morning," a Coast Guard official said.
However, the whereabouts of six crew members of the Japanese-built ship were not known, said an official of the Mumbai-based Pratibha Shipping.
Anchored in Bay of Bengal near the Chennai Port, Pratibha Cauvery with 37 crew members started drifting towards the shore due to strong winds Wednesday. Cyclone Nilam was set to cross the coast between Mamallapuram and Kalpakkam Wednesday evening.
Image: Fishermen try to rescue people from the tanker Pratibha Cauvery as it got drifted in Bay of Bengal due to Cyclone Nilam in Chennai