Rescuers took 13 crew members of the YM Uranus, a vessel sailing under a Maltese flag, to safety by helicopter, a port authority spokesman said, after it appeared to hit another ship south of the island of Ouessant off France’s northwest coast.

Brest’s port authority said a navy tugboat had managed to hook up to the tanker and begin towing it toward Brest. The vessel would not arrive in Brest before Friday night.

“No pollution has so far been observed,” the port authority added in a statement.

Patrick Adamson, spokesman for V Ships, which manages the 120-meter-long YM Uranus, told Reuters the YM Uranus was in a collision with the 179,000 dead-weight ton bulk carrier Hanjin Richzad.

“It is afloat, not drifting,” he said. “We don’t know the damage to the other vessel.”

He said “(the collision) did create a breach in the hull, there was water ingress. We understand the water ingress has now stopped. There’s no pollution at the moment.”

The YM Uranus, built in 2008, was sailing from Porto Marghera in Italy to Amsterdam and was around 50 nautical miles, or 100 kilometers, south west of Ouessant when it got into difficulties.

The Hanjin Richzad, which was sailing from Las Palmas to Rotterdam, has anchored off the island of Ouessant.

Every day around 150 ships sailing off the coast of Finistere use the two shipping lanes put in place to regulate marine traffic around Ouessant.