HD Hyundai Heavy Industries Co. on Thursday reported its first-quarter net income of 28.6 billion won (US$20.8 million), swinging from a loss of 20.5 billion won a year earlier. Operating income for the January-March period was 21.3 billion, compared with a loss of 41.5 billion won a year ago, the company said in a regulatory filing. Revenue rose 13.5 percent to 2.98 trillion won. The operating profit was 4.2 percent lower than the average estimate, according to a survey by Yonhap Infomax, the financial data firm of Yonhap News Agency. The estimate of net profit was not available. Source: Yonhap News Agency