South Korea’s investments announced this week for the US shipbuilding sector will mildly rock China’s busy shipyards but – at least in the short term – are unlikely to put a dent in the Chinese industry, which enjoys scale and cost advantages over other countries, according to analysts.The rack of intended investments from major companies in South Korea, the world’s second-largest shipbuilding nation after China, could test the Chinese sector after the US projects get moving several years down...