A Cosco bulker has survived a scrape with Somali pirates almost two years after being involved in a high-profile casualty off Norway.

The Full City grounded on the rocks off Langesund, spilling oil in 2009.

Armed pirates using two skiffs attacked the 26,800-dwt Full City early this morning in the Southern Arabian Sea, sources say.

They managed to board the vessel and there were some suggestions the ship had been hijacked.

Indian, Chinese and NATO warships raced to the scene and a boarding party has now confirmed the pirates have left.

The Full City was en route from Jeddah to India when the attack took place.

The 1995-built bulker made headlines in the summer of 2009 after running aground off Norway.

An estimated 300 tonnes of fuel oil was spilled in the accident after it dragged its anchor while sheltering from a storm.

The master was sentenced to six months in jail for his role in the saga.