The Dutch Transport Ministry has said that there is no danger to public health or the environment after a collision between two ships in the North Sea.
The coast guard said jet fuel had stopped leaking but there was still a risk of an explosion.
The Greek tanker and Cypriot container ship collided about 30 kilometres off the Netherlands’ coast.
No-one was injured, but the tanker suffered a gash several metres long in its hull.
Oil has been floating over an area up to three kilometres long, but experts at the scene said it should evaporate.
The container ship has been allowed to continue its journey to Rotterdam. Police have been questioning the tanker’s crew on board; the authorities hope to get the vessel ashore by nightfall.