Oil tanker’s sinking off China raises environmental fears

The sinking of an Iranian tanker off China could severely damage marine life, environmental experts warned Monday, as state media reported an oil spill covering up to 50 square miles at the scene.

The Sanchi, carrying 136,000 tonnes of light crude oil from Iran, went under on Sunday after a new and massive fire erupted, sending a cloud of black smoke as high as one kilometre above the East China Sea.

The bodies of only three of the 32 crew members have been found since the vessel collided with the CF Crystal, a Hong Kong-registered bulk freighter, on January 6, sparking a fire that Chinese rescue ships struggled to extinguish.

Iranian officials said there was no hope of finding survivors among the crew of 30 Iranians and two Bangladeshis, prompting grief and anger among families of the sailors in Tehran.

“Oil spills from the ship are still burning” at the scene, China’s transport ministry said Monday.

An oil spill 11.5 miles long and up to 4.6 miles wide surrounded the site as of Monday afternoon, according to the official People’s Daily newspaper.

Dramatic photos showed a huge column of black smoke rising from bright red flames.

Alaska-based oil spill consultant Richard Steiner called the accident “the single largest environmental release of petroleum condensate in history”.

“Given the poor condition of the hull of the ship after a week of explosions and fire, it is my assumption that none of the cargo holds or fuel compartments remain intact, and thus all of the condensate and fuel has been released,” Steiner told AFP.

Even if only 20 percent of the vessel’s cargo was released into the sea, it would still be an amount about equivalent to Alaska’s disastrous 1989 Exxon Valdez crude oil spill, he said. “I don’t know of any condensate spill into a marine environment larger than 1,000 tonnes, and most that we know of have been less than one tonne,” he said.

The Sanchi’s own fuel tank was able to accommodate some 1,000 tonnes of heavy diesel, according to Chinese media.

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