The US’s most ambitious shipyard project just got tougher

Philly Shipyard, bought last year by South Korean naval giant Hanwha Ocean, was already central to Trump’s bold plans to revitalize American shipbuilding and narrow a yawning maritime gap with China. Now, the prospect of also building a nuclear-powered submarine in Philadelphia has ratcheted up the ambition—and difficulty—even further. When Hanwha bought Philly Shipyard for $100 million, the U.S. site was losing money. Today, it is central to South Korea’s $150 billion pledge to help Trump revive American shipbuilding—one of the most ambitious industrial turnaround projects in the U.S. in decades. Hanwha plans to pump $5 billion into the site,…