Yeah the ribs are gonna be the hard part of the project, both physically and financially. It might help to get the right curvature if you think of how big the complete frame would be. IIRC the frames on my boat where rolled steel and welded together. I'm not sure about early boat frames, but they could have been welded in the same fashion. Therefore bolts may not look "right".
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USS Kentucky SSBN 737 (G)
Comms Div 2003-2006
Qualified 19 November 03
Yes I was really on a submarine.
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