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Warship's Thames exercise

The Royal Navy's largest warship, HMS Ocean, has docked in the Thames as it prepares to take part in military exercises ahead of the Olympics.

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Guiding HMS Ocean through Thames Barrier was a 'challenging' task

HMS Ocean passes through Thames Barrier Credit: PA

HMS Ocean was successfully negotiated through the Thames Barrier, before beginning a 180-degree turn at West India Docks. She arrived at Greenwich at around midday.

Captain Andrew Betton described the task of guiding her through gaps of just 60 metres as "challenging".

Smaller crafts and patrol boats accompanied the ship as part of the maritime security plan.

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