What do we know about the clash with an oil tanker and a freight vessel

The BBC checks how a ship carrying a highly toxic chemical struck a tanker in the North Sea, which transports jet fuel to the US military.

The incident happened before 10:00 GMT, with the flawless tanker Stina obviously hit while on anchor from the Solong container, tracking data analyzed by the BBC, suggest.

Thirty -six people were taken ashore and no one had to go to the hospital. But one of the 14 members of the Solong cargo ship crew is missing, said ship owner Ernst RoS.

Motion Graph from Mark Edwards