For those in the UK or who can access the video content on the BBC iPlayer ...
History documentary: PQ 17: An Arctic Convoy Disaster
BBC 2 this evening, Thursday 2nd Jan 2014, at 9pm (will later be available on the BBC iPlayer for seven days)
Jeremy Clarkson tells the story of the Arctic convoys of the Second World War, revealing the terrible hazards faced by the Merchant and Royal Navy sailors who delivered vital war supplies to the Soviet Union via this treacherous route. Accompanied by first hand testimony from those who served on the convoy, Clarkson retraces the voyage of convoy PQ17, a joint Anglo-American convoy which would become one of the biggest naval disasters of the 20th century.
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Note that this is the convoy spoken about in Bad Blood.