Rigs and VesselsNorwegian driller denied chance to appeal in drillship legal caseNorthern Drilling and Hanwha Ocean (ex DSME) have been in legal disputeMajor shareholder: one of Norwegian shipping tycoon John Fredriksen's companies is the main owner of Northern Drilling.Photo: REUTERS/SCANPIXRussell SearanckeNorway CorrespondentSingapore