In this file photo dated October 9, 2016, showing the Transocean Winner drilling rig as it broke free from tug boats in rough seas and ran aground off the Isle of Lewis, Outer Hebrides, Scotland. Final preparations are being made for high tide on Monday August 22, 2016, to re-float the 17,000-tonne oil rig carrying some 280 tons of diesel on board. (Photo by Andrew Milligan/PA Wire via AP Photo)
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