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Nuclear submarines collide in Atlantic

Damaged British and French vessels return to base after crash deep below ocean's surface

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* Rachel Williams, Richard Norton-Taylor and agencies
* guardian.co.uk, Monday 16 February 2009 10.42 GMT
* Article history

HMS Vanguard

HMS Vanguard before it suffered 'scrapes' in a collision with a French submarine. Photograph: Chris Bacon/PA

A Royal Navy nuclear submarine and a French vessel have been damaged in a collision deep below the surface of the Atlantic Ocean.

HMS Vanguard and Le Triomphant, which were carrying nuclear missiles on routine patrols, are reported to have collided while submerged on 3 or 4 February. Between them they had about 250 sailors on board.

The Ministry of Defence initially refused to confirm the incident, saying it was not policy to comment on submarine operations. This afternoon the First Sea Lord, Admiral Sir Jonathon Band, issued a statement saying the two vessels hit each other while travelling at very low speeds and no one was injured.

"We can confirm that the capability remained unaffected and there has been no compromise to nuclear safety," he said. The MoD said the Vanguard returned to its base in Faslane, Scotland, with only "scrapes".

Defence officials told guardian.co.uk the two submarines collided in what they said was an extraordinary accident. "They can't see each other in the water," one official said, raising questions about the submarines' sonar and why they did not detect one another.

Opposition parties asked how the accident was possible. The SNP's Westminster leader, Angus Robertson, said: "The UK Ministry of Defence needs to explain how it is possible for a submarine carrying weapons of mass destruction to collide with another submarine carrying weapons of mass destruction in the middle of the world's second-largest ocean.