MAY 7TH. - WHITBY, YORKSHIRE. At 7.15 A.M. the coastguard reported that a keel boat three miles off was showing a distress signal. She was the Prosperity, of Whitby, with a crew of five. A light westerly wind was blowing and the sea was smooth, but with the possibility of attack by German aircraft the Prosperity, could not be left at sea, and as no other boat was available, the No. 1 motor life-boat Mary Ann Hepworth was launched and towed her in, arriving at 9.30 A.M. - Rewards, £3 11s. 6d..