Item (6)
February 12, 2009
Item (5)
December 12, 2009

Item (7)

‘One Man’ ferro-cement submarine. Hi ! I’ve been making progress with my sub. I have modified my design from my original . Once the numbers were calculated it was apparent that I needed way more buoyancy to get where I need to be. I played around with various ideas until I came to the conclusion that I needed to use the ferro-cement in the most advantages way. I did not want to submit the ferro-cement to any high pressure so I was avoiding certain aspects of my design parameters. Anyway I sort of came to a compromise , what I am doing is making a large tubular structure where there is a large volume that will serve as a “soft ballast” tank. This will be used for flotation and will control submerging. I have built a working model ( 1/6 scale ) . I will send you some more pictures soon. I think I’m going to have a bunch of questions about the best way to connect thru hull bulkhead fittings to the ferro-cement. Basically what I need to do is to fill this volume with compressed air thereby pushing the water out an open hole located at the bottom.
Thanks Brian Cox (USA)

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