Scripps FLIP ship
I love the FLIP ship, it's a 108m-long, thin ship with no engine of its own; it gets towed out into the ocean somewhere where they want to do some research but need a stable platform that won't bob up and down or make noise. When they get it there, they flood the long stem bit and it sinks under the water, flipping up the whole ship 90°. The length and weight of the sunken part makes it very stable so it provides a great base even in fairly heavy seas. The crazy thing is what it means for the people on the ship at the time – they don't get off to flip it:








