The Shell conical drilling unit Kulluk sits aground on the southeast shore of Sitkalidak Island about 40 miles southwest of Kodiak City, Alaska, in 40 mph winds and 20-foot seas January 1, 2013. The Kulluk grounded following many efforts by tug and Coast Guard crews to tow the vessel to a safe harbor when it was beset by winter storm weather during a tow from Dutch Harbor, Alaska, to Everett, Wash.