Slightly tangentially, there's a great short documentary on the building of Chevron's Ninian Central Platform at Loch Kishorn in 1978 [0]. At the time of constr

Slightly tangentially, there's a great short documentary on the building of Chevron's Ninian Central Platform at Loch Kishorn in 1978 [0]. At the time of construction it was the largest "man-made movable object". The base and supporting column for the drilling platform itself was constructed entirely out of concrete and floated to ~100 miles north east of the Shetlands. Really is quite amazing that you can float a 600,000 tonne object several hundred miles out to sea. [0]: http://movingimage.nls.uk/film/5973 http://movingimage.nls.uk/film/5973 [1]: https://en.wikipedia.org/wiki/Loch_Kishorn#Kishorn_Yard https://en.wikipedia.org/wiki/Loch_Kishorn#Kishorn_Yard [2]: https://en.wikipedia.org/wiki/Ninian_Central_Platform https://en.wikipedia.org/wiki/Ninian_Central_Platform