CHICAGO–(BUSINESS WIRE)–Fitch Ratings has assigned ratings to Transocean Proteus Limited (Proteus), a wholly-owned subsidiary of Transocean, Inc. Fitch rates Proteus’ Long-Term Issuer Default Rating (IDR) ‘B+’ and senior secured notes ‘BB-‘/’RR3’. The Rating Outlook is Negative. The secured debt rating considers the structural seniority of the notes given the lien on the Deepwater Proteus and certain other assets related to the rig, as well as guarantees by Transocean Ltd., Transocean Inc., a