CHICAGO--(BUSINESS WIRE)--Fitch Ratings has downgraded its ratings on the QGOG-sponsored oil vessel-backed financings to 'BB' from 'BB+'. Concurrently, Fitch has removed the rating from Rating Watch Negative and assigned a Negative Outlook. The rating action affects approximately $316.5 million of senior secured notes issued by QGOG Atlantic / Alaskan Rigs Ltd. A full list of rating actions follows at the end of this press release. The downgrade reflects Fitch's view related to Petrobras' willi