When a drilling platform is scheduled for destruction, it must go on a thousand-mile final journey to the breaker’s yard. As one rig proved when it crashed on to the rocks of a remote Scottish island, this is always a risky business
I t was night, stormy, and the oil rig Transocean Winner was somewhere in the North Atlantic on 7 August 2016 when her tow-line broke. No crew members were on board. The rig was being dragged by a tugboat called Forward, the tethered vessels charting a course out of Norway that was meant to take them on a month-long journey to Malta. Within the offices of Transocean Ltd, the oil-exploration company that owned the rig, such a journey might have been described with corporate seemliness as an “end-of-life voyage”; but in the saltier language heard offshore, the rig was “going for fucking razorblades” – for scrap, to be dismantled in a shipbreaking yard east of Malta. In that Atlantic storm, several thousand miles from her intended destination, Winner floated free.
The 33-year-old rig had never moved with so little constraint. Winner was huge – 17,000 tonnes, like an elevated Trafalgar Square, complete with a middle derrick as tall as Nelson’s Column, her four legs the shape of castle keeps; all this was borne up in the water on a pair of barge-sized pontoons – and its positioning had always been precisely controlled. While moored, she was held in place by eight heavy anchors. At other times, she was sailed with a pilot at the helm as if she were any other ship. When contracted to drill in the North Sea, as she had been since the 1980s, boring into the bedrock for hidden reservoirs of oil, Winner’s anchors and underwater propellers worked together with her on-board computers to “dynamically position” her – that is, keep her very still. The men and women who formed Winner’s crew – drillers and engineers and geologists and divers and cleaners and cooks, most of them Norwegian – imagined this rig to have a character that would resist such checks. They nicknamed her Svanen, or Swan, because to them she was both elegant and unyielding. Scheduled as she was for destruction, Winner could not have chosen a better moment to bolt.