SAVE THE DATES

Marine Log

December 19, 2006

SCORE up again

GlobalSantaFe Corporation (NYSE:GSF) reports that the company's worldwide SCORE, or Summary of Current Offshore Rig Economics, for November 2006 increased 0.7% to 132.5 from the previous month's SCORE of 131.6.

GlobalSantaFe's SCORE compares the profitability of current mobile offshore drilling rig dayrates to the profitability of dayrates at the 1980-1981 peak of the offshore drilling cycle. In the 1980-1981 period, when SCORE averaged 100 percent, new contract dayrates equaled the sum of daily cash operating costs plus approximately $700 per day per million dollars invested.


Nov-06 Oct-06 1 Month 1 Year 5 Year

SCORE SCORE Change Change Change
By Area:
Gulf of Mexico 109.2 110.9 -1.6% 8.2% 234.5%
North Sea 151.7 152.5 -0.5% 47.6% 189.3%
West Africa 143.8 143.4 0.3% 53.4% 144.6%
SE Asia 123.4 115.5 6.9% 75.0% 122.5%
By Type:
Jackup 126.6 127.2 -0.5% 39.2% 146.5%
Semisubmersible 144.0 141.5 1.8% 37.4% 246.1%
Worldwide 132.5 131.6 0.7% 37.4% 187.6%

MORE NEWS STORIES