The A-Whale bills itself as the largest open-water oil skimmer in the world, and it’s at least very impressive. Originally an oil and ore tanker, the ship’s owners recently refitted the ship to do exactly the kind of work that the US so desperately needs in the Gulf of Mexico, and to do it on a vastly larger scale than current operations can handle. According to the ship’s project manager, the entire American effort in 66 days has skimmed off 600,000 barrels of oil. The ship’s owners claim that A-Whale can skim 500,000 barrels a day. So where is the...