Shipyard boss Antonio Palumbo has been acquitted of waste dumping in Italy, two years after receiving a six-year jail sentence.
Palumbo Group said the Court of Appeal in Messina annulled the previous judgement in a lower Messina court.
Convictions for conspiracy, illegal waste trade and environmental damage at the construction site in Messina have been quashed. The full judgement will not be available for three months.