Kochi, June 11 -- Hectic efforts to douse the fire on the Singapore-flagged cargo ship containing hazardous and flammable cargo off the coast of Kerala continued for a second day on Tuesday, with experts warning of drifting containers and a potential oil spill.

The vessel - Wan Hai 503 - was sailing from Colombo to Nhava Sheva port in Mumbai when an explosion in one of its containers sparking a fire on Monday, when it was around 70 nautical miles off Kozhikode.

The Navy and the Indian Coast Guard (ICG) rescued 18 of the 22 members while four remained missing. Another official said that among the 18 rescued, two are said to be in critical condition, while four have minor injuries. Twelve others suffered varying levels of trauma. The inju...