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Iranian shippers play 'cat and mouse' to avoid sanction

29 July 2010 Last updated at 19:25 BST

Like many other areas, Iran's shipping industry has been hit by economic sanctions imposed by the international community.

But Tehran has found a way to stay one step ahead, by re-registering merchant vessels so they escape censure.

Amir Paivar has been tracking the movements of one such ship.