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Daniel Ren

China has begun an investigation into the Sanchi oil tanker collision and authorities are looking into the feasibility of salvaging the wrecked ship in a bid to minimise contamination from the spill.
But a maritime official on Friday warned that retrieving the wreckage from a depth of 115 metres at the bottom of the East China Sea – where the Iranian tanker exploded and sank – could cause another explosion.
“The best solution is to organise salvaging of the sunken ship,” Zhi Guanglu, deputy director of the China Maritime Search and Rescue Centre, told reporters. “But the vessel is huge and it could turn out to be an extremely daunting task.”
China to send in deep-sea divers to plug oil leaks in sunken Iranian tanker Sanchi
That task would not begin until rescuers had worked out a clear, viable and safe plan to do so, according to Gong Yongjun, a maritime operations specialist at Dalian Maritime University.
Zhi said maritime authorities would also consult the ship owner, National Iranian Tanker, about the salvage plan.

The Sanchi was carrying 136,000 tonnes of condensate – a highly flammable, ultralight crude oil – when it collided with Hong Kong-registered bulk freighter CF Crystal about 160 nautical miles east of Shanghai on January 6. It exploded and sank about 530km (330 miles) southeast of Shanghai on Sunday and its crew of 30 Iranians and two Bangladeshis are believed to have died.
Seafood supply may be hit as Sanchi oil spill spreads in East China Sea
As well as the cargo of crude oil, the toxic bunker fuel that powered the ship’s engines is also a pollution concern – the heavy oil is much more hazardous than condensate and difficult to remove from the water. Xiao Yingjie, president of the Merchant Marine College at Shanghai Maritime University, estimated there was about 1,000 tonnes of bunker fuel still trapped in the tanker.


China’s State Oceanic Administration said on Thursday that several previously unreported oil slicks had been seen by planes, ships and satellites, one of them 2.5km east of the sunken tanker, that could indicate leakage of the bunker fuel.
The oil spill is the biggest in decades and Chinese, Japanese and South Korean teams are racing to contain the contamination.
The Shanghai Maritime Search and Rescue Centre sent more than a dozen salvage and clean-up vessels to the disaster site as well as divers and underwater robots to detect leaks.




Zhi said the authorities were checking the Sanchi’s black box, which contains the ship’s sailing data and a voice recorder, to assess who was responsible for the collision. The black box was recovered by Chinese emergency workers on January 13, before the tanker sank.
Contamination from Iranian tanker spill could get much worse, China says
Xiao said the two vessels’ trajectories before they collided would be analysed to determine what caused the accident.
“It is unclear at this stage what caused the collision, whether it was the result of oversight by crew or improper operations,” Xiao said.
Zhi described the recovery effort as “unprecedented” for Chinese maritime authorities and said they were doing their utmost to minimise the damage.
Gong, from the Dalian university, said the focus for rescuers at the moment was assessing the wrecked ship and detecting leaks. “After a big explosion, it will be hard to staunch the flow of oil in a short period of time,” he said.


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Environment

China probes Sanchi oil tanker collision and may try to salvage sunken ship

A rescue ship works to clean the oil slick on Wednesday after the Sanchi sank off China’s eastern coast. Photo: EPA-EFE

epa06440241 A handout photo made available by the Transport Ministry of China on 15 January 2018 shows rescue workers operating on the Panama-registered tanker 'Sanchi' after a collision with Hong Kong-registered freighter 'CF Crystal,' off China's eastern coast, 13 January 2018. Reports state Iranian oil tanker 'Sanchi' sunk after a collision with a merchant ship around 296km off the coast of Shanghai. Thirty-two crewmen, including two Bangladeshis, were onboard the oil tanker carrying 136,000 tons of Iranian crude oil, that caught fire since the collision with the CF Crystal cargo ship on 06 January. EPA-EFE/TRANSPORT MINISTRY OF CHINA HANDOUT --BEST QUALITY AVAILABLE-- HANDOUT EDITORIAL USE ONLY/NO SALES

China to send in deep-sea divers to plug oil leaks in sunken Iranian tanker Sanchi

The top priority now would be to plug any leaking oil pipes on the tanker to minimise damage to the marine ecosystem. Photo: EPA

scmp

This handout picture taken on January 13, 2018 and released by the Transport Ministry of China shows four Chinese rescuers posing for a picture before boarding the burning oil tanker "Shanchi" at sea off the coast of eastern China, a day before the Iranian oil tanker burst into flames from end to end and sank. It was reported on January 16 that Beijing has sent its condolences to Iran over the death of 30 sailors from a tanker that sank in the East China Sea, as authorities scrambled to contain a huge spill. / AFP PHOTO / TRANSPORT MINISTRY OF CHINA / Handout / -----EDITORS NOTE --- RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / TRANSPORT MINISTRY OF CHINA" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVES

Seafood supply may be hit as Sanchi oil spill spreads in East China Sea

Pollution from sunken tanker adds to stress on damaged ecosystem and it could mean China will be more reliant on imports of fish, marine scientist says

shutterstock_731437351.jpg This shutterstock shot of swordtip squid. Photo: SHUTTERSTOCK

shutterstock_166229552.jpg This shutterstock shot of humback whale. Photo: SHUTTERSTOCK

The oil spill is seen on the water’s surface on Monday, near where the Sanchi sank in the East China Sea. Photo: Xinhua

News

China

People & Culture

Maritime official says retrieving vessel is best solution to contain environmental damage but it could cause another explosion


Sanchi tanker oil spill

Marine safety