A court official in the southern province of Ba Ria-Vung Tau said Taiwan's Formosa Plastics had provided the guarantee through the Vietnam Bank for Foreign Trade.An official at the provincial department of Science, Technology and Environment said the ship left last week following the guarantee.
The court official said the provincial authorities had filed a lawsuit against the owners demanding $16.8 million in compensation for environmental damage after the spill on September 7.
Petrolimex, the Vietnamese owner of the tanker Petrolimex 01, with which Formosa One collided, was seeking $2.38 million for damage to its carrier and cargo, he added.
According to Vietnamese officials,the collision in the Vung Tau Bay 120 km (75 miles) southeast of Ho Chi Minh City, resulted in the spillage of 700 to several thousand tonnes of diesel oil which washed up onto nearby tourist beaches and shrimp farms.
The 31,372 dwt Formosa One was impounded after the incident.