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. - CMBXX8 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.

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')

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

Hms ocean hi-res stock photography and images - Alamy

HMS Ocean on the Thames for the Olympics

London 2012 Olympics security: Special forces give a show of strength on the Thames

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

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

Olympics security hi-res stock photography and images - Alamy

Policing operation hi-res stock photography and images - Alamy

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

G4s security olympics hi-res stock photography and images - Alamy

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

London 2012 olympic games army hi-res stock photography and images - Alamy

HMS Ocean moored at Greenwich during London 2012 Olympics security operation Stock Photo - Alamy