<sod >The USS Michigan, a nuclear powered Ohio class submarine will pull into the South Korean port of Busan for a hull check in the coming hours, military sources confirmed Monday to Fox News.< eod>< sod > The USS Michigan, a nuclear-powered Ohio class submarine, was set to pull into the South Korean port of Busan for a hull check, as the USS Vinson aircraft carrier strike group approached the region, military sources confirmed Monday to Fox News.< eod>