A tug, barge and crew boat all went aground on a beach near Little Creek Inlet, Virginia.   The vessels had been working on the Chesapeake Bay Bridge-Tunnel when they received notice that a storm was approaching.   The vessels headed back to the port, but the storm reached them first.   The vessels were pushed ashore onto a sandy beach.   All vessels were refloated the next day and taken to Little Creek Inlet.   No reports of injuries, damage or pollution being released.   The Coast Guard is conducting an investigation into the incident.