The 229 meter long freighter Petalon loaded with coal went aground in the Thimble Shoals Channel, Chesapeake Bay. The vessel was refloated a few hours later. The Coast Guard sent out a navigation team to check to see if the navigation buoys are in the proper place. The Army Corps of Engineers are also doing a survey of the channel to verify the depths. The Petalon will have an inspection for damage. No reports of injuries or pollution being released.