Investigators believe a 1,200-foot (366-meter) cargo ship dragging anchor in rough seas caught an underwater oil pipeline and pulled it across the seafloor, months before a leak from the line fouled the Southern California coastline with crude. A team of federal investigators trying to chase down the cause of the spill boarded the Panama-registered MSC DANIT just hours after the massive ship arrived this weekend off the Port of Long Beach... ...The DANIT's operator, MSC Mediterranean Shipping Company, is headquartered in Switzerland and has a fleet of 600 vessels and more than 100,000 workers, according to the company....