HMS Ocean squeezes through Thames Barrier to guard Olympics

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HMS Ocean squeezed through the Thames Barrier today as it made its way towards central London ready for Olympics security duty.

With tug boats at bow and stern, the Navy's largest ship had a narrow path through the world's second largest movable flood barrier.

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The vessel will be the base for helicopter operations as part of a massive security presence during the Games.

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Once through the Barrier, crew members formed Olympic rings on deck:

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