In addition, an ultra-deepwater semisubmersible is under construction and scheduled for delivery in early 2009. Transocean Inc. has a fleet of 82 mobile offshore drilling units. The company's fleet consists of 33 semisubmersibles and drillships, 20 other floaters, 25 jackups and other assets utilized in the support of offshore drilling activities worldwide. The company has contracts for the construction of 4 newbuild enhanced enterprise-class drillships and a current equity market capitalization in excess of $31 billion. Following the merger announcement, Standard & Poor's Ratings Services lowered its corporate credit ratings on Transocean Inc. and GlobalSantaFe Corp. to 'BBB+' from 'A-'. Both ratings were placed on CreditWatch with negative implications.