Installing an off-shore gas platform can be a tricky proposition. Things can go very wrong. That's exactly what happened with this £25 million Iranian platform was being installed in the Persian Gulf.

For as terrifying as the footage is, there were no reported casualties; looks like everyone knew how to swim. Still, that's a lot of cash going down the drain, and boy does it ever look like £25 million worth of pure, unadulterated terror. [Reddit]