Grimy ships switch from iron ore to food crops as Asia demand declinesBloombergDirty bulk ships used to carry iron ore are being scrubbed clean so that they can transport grain to Asia, in an unusual shift of cargoes prompted by a slump in demand for the steelmaking ingredient. China’s downturn in the housing market has weighed on iron ore, driving freight rates for bulk carriers down 50 percent from a year earlier. That has made it more attractive for some of the world’s biggest agriculture traders to book iron ore vessels for shipments of corn and soybeans. Large iron ore ships typically stay away from grain as it involves a time-consuming cleaning process to make the vessels safe for carrying food. The depressed iron ore trade this year could be pushing Baby Capes to seek “alternative employment,” said Ralph Leszczynski, head of research at shipbroker Banchero Costa & Co.