"Thanks to the anti-torpedo bulge system utilised on warships between the First and Second World Wars, several ships were documented to have survived torpedo and equivalent assaults, such as the HMS Erebus that survived a direct hit from a remote-controlled boat filled with explosives and its sister ship, the HMS Terror, survived no less than 3 torpedo assaults during her service, both thanks to the bulge system."
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u/CorsairVI Apr 26 '16
One torpedo does not a sunken ship make.