Chatham is a large town in Medway, North Kent. About 70,000 people live there. The town is important because of its harbour. Even though the harbour is no longer used, it is still important for tourism. The first mention of the town was in the year 1086. In the year 1667, the docks were attacked by the Dutch. Charles Dickens lived in Chatham from 1817 to 1821.