Channel 5: "Big, Bigger, Biggest" - Thursday, Oct 10th 2013 - 1900

#1
"Big, Bigger, Biggest

Series 2: Submarine

This instalment reveals how six technological breakthroughs enabled the construction of gigantic submarine the USS Pennsylvania."
 
#2
"Big, Bigger, Biggest

Series 2: Submarine

This instalment reveals how six technological breakthroughs enabled the construction of gigantic submarine the USS Pennsylvania."
For those that miss it.
[video=youtube;PPe1gMr8eCk]http://www.youtube.com/watch?v=PPe1gMr8eCk[/video]
 

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