Thread: The PING is supersonic. So why do we hear it?
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Old 06-14-06, 11:01 AM   #2
Drebbel
Dutch Sea Lord
 
Join Date: Jan 2002
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Those uboots are in the stone age compared to the average USN fleet boat!
Then why where new designed post-war subs around the world mainly copies of the German type XXI ?
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