On 7 May 1915, U-20 torpedoed the pride of the Cunard fleet, R.M.S. Lusitania. She sank in 18 minutes, taking 1,198 with her and leaving only 761 survivors. Relive her final hours and witness one of the greatest maritime disasters in history.   New York Times GUGGENHEIM MISSED CHILD.; Tender at Fishguard Went Back to Lusitania to Get Her. LONDON, July 28. -- Mr. and Mrs. S.R. Guggenheim, with their three daughters, arrived this week by the Lusitania, and are spending a few days in London before going to their country house in Sussex for a long stay. Mr. and Mrs. Guggenheim had rather an alarming experience on last Monday evening when they were landing at Fishguard.