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Exxon Valdez oil spill was the incentive to introduce legislation requiring tankers to have a double hull, a measure that is not seen as the best solution by all experts. Where a double hull should minimize the consequences after a disaster, Concordia Maritime developed the "Stena V-MAX", a VLCC with two propellers, two rudders and two redundant engine rooms, where a single fault does not result in loss of steering, reducing the chances of a grounding.