The deck of a container ship
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Along the deck of a huge container ship in 30 seconds

Container ships are getting bigger and more numerous with the growth in global trade.

To demonstrate the vast sizes involved, BBC News walked along part of the deck of a 365m long vessel - and condensed the resulting film into just 30 seconds.

This particular container ship was docked at Southampton where the seabed is being lowered to allow for bigger vessels.

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