Friday 13th July 2012 Operation Olympics, HMS Ocean takes her place on the River Thames in preparation for London 2012 Olympic Games security operation Stock Photo - Alamy

Download this stock image: Friday 13th July 2012 Operation Olympics, HMS Ocean takes her place on the River Thames in preparation for London 2012 Olympic Games security operation. - CMBXX9 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.

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London 2012 Olympics: HMS Ocean moors on the Thames for security operation

London 2012 Olympics: HMS Ocean moors on the Thames for security operation

London 2012 Olympics: HMS Ocean moors on the Thames for security operation

London 2012 Olympics: HMS Ocean moors on the Thames for security operation

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Thames exercise prepares Marines for Olympic security role

London 2012 Olympics: HMS Ocean moors on the Thames for security operation

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Royal Navy's largest warship sails down the Thames as armed forces put on show of strength for Olympics