China’s crude oil imports from ship-to-ship transfers soared threefold between August and September to 910,000 tons, Bloomberg reports, citing ship tracking data. The source of the oil, the agency noted, was unclear. “I think its highly likely that these ship-to-ship and Malaysian volumes are Iranian or Venezuelan crude,” Bloomberg quoted Michal Meidan, the head of the China Energy Programme at the Oxford Institute for Energy Studies as saying. “But of course the whole point here is to make it hard to be sure,”…