Lifeboat and helicopter crews were scrambled after reports of a “man overboard”. An RNLI Sheerness lifeboat was launched after a dinghy had been seen drifting off the Isle of Grain. The crew of the lifeboat, Judith Copping Joyce, had taken to the water at 9am on Tuesday, April 9 and found the dinghy within 10 minutes. It had run aground in the mud at West Shore and there were no signs of a person being involved so the crew assumed the craft had come adrift from a mooring. The lifeboat was stood down but a signal was received from a “man overboard” device. The alarm was reported to the coastgua…