Originally posted by SimonC I watched a documentary on how ships are kept together.
It was riveting!
Somewhat "off the point" but, a couple of months ago, I saw a "War Factories" programme on one of the SKY Documentary channels that explained that, until the early/middle of WWII, all ship hulls were put together with rivets, but a US entrepreneur told their government that "he" could build them much faster using different methods in order to be able to send urgently-needed war supplies to the UK - so "he" went against "history" and set up a huge new shipyard to build them with hulls that were welded together instead of riveting (which was very labour/time-intensive).
"Everyone else" said that "it couldn't be done" - but that's the way that the "Liberty Ships" were built in record time, and in very large numbers, and so the rest is "history" (except that, after the war, that shipyard soon became disused, and has stayed that way to this day).