The fates of six ships from the James River Reserve Fleet are in limbo after a Maryland salvage yard that was supposed to scrap the vessels abruptly closed and its owners disappeared. North American Ship Recycling Inc., near Baltimore, won federal contracts in August worth $2.1m to dispose of the government-owned dinosaurs. But the yard, which opened in 2004 amid much fanfare, including a celebratory speech from then-U.S. Transportation Secretary Norman Y. Mineta, shut down without notice sometime last month, leaving behind two of the Virginia "ghost fleet" ships and plenty of questions. To protect against a fuel spill, government-hired crews have since installed rubber booms around the two abandoned ships…