The world’s largest naval base, Naval Station Norfolk, has ordered most of its ships to depart in advance of Hurricane Florence. In total, 30 vessels will depart the base and nearby Joint Expeditionary Base Little Creek, and will weather the storm at sea. The departures began on Monday. Some Norfolk-based vessels will not get underway because they are undergoing maintenance, and their crews will take extra precautions to ensure their safety, like doubling up their mooring lines and disconnecting shore power cables.