Star Bulk Carriers Corp said it would buy Oceanbulk Shipping LLC and Oceanbulk Carriers LLC in an all-stock deal to create the largest U.S.-listed dry bulk shipper. Star Bulk is issuing 54.104 million new shares to buy the Oceanbulk companies, valuing the deal at about $653 million based on Star Bulk's Friday close of $12.07. The deal comes as the global dry bulk shipping industry is poised to recover from a severe downturn, helped by steadying demand for iron ore and coal from China and India and the scrapping of older vessels.