U-boat (Ship Class) »
How a World War II Submarine Works (720p)
WATCH ENTIRE PLAYLIST http://www.youtube.com/watch?v=TpavBm5BHX8&list=PLRPW3IFnQj1w9qXaG4kHqAT_iSzaZYysA U.S. Navy, 1955 FOLLOW on: Tweets by SuperiorHist https://www.facebook.com/superiorhistory source
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