Alaskan North Slope (ANS) crude will be shipped to Nicaragua for the first time in July, two trade sources said on Friday, underscoring a shift in oil flows to and from the U.S. West Coast. A parcel of the medium grade crude is on its way to the Pacific Area Lightering (PAL) near southern California on Exxon Mobil Corp's Liberty Bay, a U.S. flagged vessel, according to the sources and Reuters vessel tracking data. From there, it will transfer to the Liberian-flagged Panamax tanker Chantal for delivery to Nicaragua, where Swiss commodities trader Trafigura Trading LLC will take the crude, said the sources who were not authorized to speak to the media about the matter. Representatives for Trafigura and Exxon declined to comment.