The Underwater Cannon

[FISHEYE]

I found this site on the net about a under water cannon (it's not what you might think)

http://www.dself.dsl.pipex.com/MUSEUM/COMMS/underwtrgun/underwtrgun.htm

 

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[pcolaboy]

Thanks for sharing the link! Pretty amazing how far concepts got back in those days without actually doing some elementary experimentation. Just like the article mentions, unless the warhead was traveling at warp speed, it would only be able to go a few yards before sinking to the bottom.