The 33-year-old structure was seriously damaged after breaking its towline from a
tug in a storm and crashing into the shore at Dalmore on the west coast of Lewis
almost a year ago.
The drilling platform would have sank if it was not for a constant stream of air
being pumped into some 27 holed tanks.
Transocean donated a £120,000 windfall as a thank you gift to the Hebridean community
which helped during the salvage and recovery operation last August.
The oil rig was later transhipped on the back of a huge heavy lift ship to Turkey
and chopped up for scrap.
Transocean has already vowed to “accept and implement” lessons learnt from the grounding
of the 17,600 tonne rig.
It previously said the tow was experiencing worse weather and sea conditions than
predicted by forecasters.
The tug towing the doomed Transocean Winner could have sought shelter when the weather
unexpectedly worsened, its owners told a parliamentary inquiry in November.
Transocean conceded it could have had better “controls in place” which may have prevented
the rig from grounding.
The various parties involved in the operation to tow the redundant rig from Norway
to Malta failed to grasp a window of opportunity to consider a contingency plan when
conditions started to deteriorated it emerged when the firm’s representatives gave
evidence to the UK Parliament’s transport committee which launched its own probe
into the incident.
The company said there was a forecast of a “three day window of very benign weather”
when the MV Alp Forward set off with the tow from Norway.
But the Met Office forecast changed to predict bad weather when the rig rounded the
north west of Scotland.