I figured i would try something different for a change, as you guys are well aware i have a fond love of anything naval, that includes ships and submarines that haven't been built as well.
I saw a program a while back on abandoned engineering and oddly they mentioned a ship that was never fully realized.
So here is my top 5 ships that didn't make it, you could say they are the what could have been.
https://www.immortalwordsmith.co.uk/...at-never-were/