Originally Posted by
bhaktajan
In World War II, the United States Navy used submarines heavily. ... Submarines in the United States Navy were responsible for sinking 540,192 tons or 30% of the Japanese navy and 4,779,902 tons of shipping, or 54.6% of all Japanese shipping in the Pacific Theater.
or
The Germans made use of this advantage, sending out about 20 U-boats to begin the naval blockade. In January, before the declaration of "unrestricted submarine warfare" as the submarine blockade was called, 43,550 tonnes of shipping had been sunk by U-boats.
540,192
43,550
+_______
583,742 x 2240lbs/tonne
1,307,582,080 pounds
Imagine mining ore in Wales and refining the klinker out of it and milling it and hauling it and transporting it and sending it to the bottom of the sea
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