STX Offshore & Shipbuilding Co., a South Korean shipbuilder, said Monday that it has won a US$150 million deal to build four vessels. Under the deal with Thenamaris of Greece, the STX Offshore will deliver the vessels used to carry oil products starting from the second half of 2012, the company said, according to South Korea\'\'s (Yonhap) news agency. The vessels, 183 meters long and 32.2 meters wide, will store up to 51,000 tons of chemical goods, it said.