A Maltese-registered chemical tanker which was damaged in a collision yesterday is being towed to a French port.

The badly listing 120-metre (400-foot) Uranus, laden with 6,000 tonnes of solvents, is being towed to the port of Brest in France's northwest after a salvage team boarded the ship yesterday.

The ship's 13-member crew took to the life rafts shortly before dawn yesterday and were winched to safety by rescue helicopter within hours, the coastguard headquarters in the Brittany city of Brest said.

The Uranus collided with a bulk carrier 50 nautical miles southwest of the island of Ouessant.

The coastguard said there was no pollution visible as they started to pump water out of the ship.

"The salvage team onboard are confident that, while the vessel has a 12-degree list to port, there is no immediate danger," the ship's Glasgow-based operator V Ships said.

The Uranus was no longer sinking, it added.

"As long as the authorities are happy about the ship's safety it should be in Brest at 8:00 or 9:00 pm this evening," a V Ships spokeswoman told AFP. French authorities said the ship was expected later in the night.

The crew are Russian, Bulgarian, Latvian and Filipino, she said. The Russian captain has been interviewed by French maritime police.

The ship is carrying "heavy pygas", V Ships said in a statement, an industrial gasoline used to make products including paint.

"We're in more of a favourable situation than an unfavourable one," maritime authority spokesman Marc Gander told journalists in Brest.

The Uranus was built in 2008 and is compartmentalised with a double hull, reducing the risk of the solvents leaking into the sea, Gander said.

The tanker was en route from Porto Marghera in Italy to Amsterdam when it collided with the Hanjin Richzad, a 191-metre Panama-flagged freighter travelling from Las Palmas in Spain to Rotterdam in the Netherlands.

One was apparently overtaking the other, Gander said.

The transport ministry said that the collision happened at around 5.15, after which the cargo ship waited to provide help if necessary to the tanker.

The Hanjin Richzad was allowed to continue its voyage after being inspected and French maritime police said they would interview the Panamanian vessel's captain at a later date.

Weather at the time of the accident was clement, with a 1.50 metre (five-foot) swell, the coastguard said.

The French Regional Operational Centre for Monitoring and Rescue (CROSS) dispatched a navy frigate and the tug to the area.

The Brittany coast is at the western entrance to the Channel, one of the world's busiest waterways, and has in the past been hit by several environmental disasters linked to shipping.

In 1978, the sinking of Liberian-flagged supertanker the Amoco Cadiz devastated around 320 kilometres (200 miles) of pristine shoreline with 230,000 tonnes of crude oil.

In 1999, the Erika tanker carrying 30,000 tonnes of heavy fuel oil broke in two and sank off Brittany, polluting a large stretch of coastline and killing tens of thousands of seabirds.

The French oil company Total was found guilty of failing to address maintenance problems when it chartered the rusty 25-year-old Erika.

French beach resorts were deserted, fishing was halted and shellfish banned from consumption in the aftermath of the oil spill, leaving the local economy on its knees for years.

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