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

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

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

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

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Security forces at London Olympics 2012

Olympics security hi-res stock photography and images - Alamy

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

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The biggest ship in London! HMS Ocean heads up the Thames in show of strength before the Olympics (as Defence Secretary warns: 'We would shoot down a jet if necessary')

HMS OCEAN OLYMPIC RINGS HD

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