The Coast Guard evacuated the Kulluk 's 18-man crew Dec. 29 , and it drifted for 10 hours the following day after the tug that was towing it lost power . Shell says there is no evidence of any sheen in the vicinity . The rig is upright and there is no threat to its stability , Shell says . The fuel tanks appear intact , the company says . The drilling rig ran aground during a storm Monday off Alaska 's southern coast .
Shell says there is no evidence of any sheen in the vicinity . The rig is upright and there is no threat to its stability , Shell says . The fuel tanks appear intact , the company says . The drilling rig ran aground during a storm Monday off Alaska 's southern coast .