In article ,
"Bob La Londe" wrote:

I have been looking at aluminum boats for the last couple years now with an
eye towards how they are built. I have noticed a lot of them will have 'V's
folded or stamped into the hull along the length for strength. I don't see
anyway that a backyard builder could do this practically. How could I
achieve this? Would it simply be better to just build a full internal frame
in both directions?

I have an aluminum boat that was built without the creases; it used 3
long al angles riveted or bolted to the outside bottom.

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