This spill might be shocking; but it was hardly unforeseeabl

This spill might be shocking; but it was hardly unforeseeable.
讲美国海上石油泄漏的一段文字：
Now environmentalists will point to the spill as a reminder of the dangers of offshore drilling.They have a point.Nancy Kinner,co-director of the Coastal Research Response Centre at the University of New Hampshire,explains that oil rigs rarely have accidents:“The risk might be one in 1,000,or one in 2,000.” Of course,she adds,there are hundreds of rigs out there.This spill might be shocking; but it was hardly unforeseeable.
最后一句This spill might be shocking; but it was hardly unforeseeable.到底是说可以预见还是说不可预见?hardly如何理解?求教……