A giant, semi-submersible oil rig en route from Singapore will probably be drilling in the Florida Straits between Key West and Cuba in mid-December. The rig could arrive earlier, but Repsol, the Spanish oil company, wants to wait until after hurricane season ends before it begins drilling. This latest report on the progress of the Italian-made Scarabeo 9 oil rig comes from Lee Hunt, the chief executive of the International Association of Drilling Contractors, who just returned from a trip to Cuba last week as part of a joint delegation with the environmental group, the Environmental Defense Fund. Hunt also...