Titanic Historical Society of the disaster in Boston, Massachusetts. The event brought together several living survivors, including Eva Hart, Louise Pope, Michel Marcel Navratil, and Beatrice Sandstrom, who enthralled those in attendance with their vivid first-person accounts of the night the "Titanic" foundered in the north Atlantic Ocean. Walter Lord, author of his seminal "Titanic" work, "A Night to Remember", was another featured guest. The Society also works to preserve the history of other ocean liners, especially the "Titanic" 's sister ship, the White Star Line's HMHS "Brittanic", which sank after hitting an enemy mine in World War I, and the Cunard ship
German hospital ship Ophelia HMS "Undaunted", while laying mines off Haak lightship. German command sent out a hospital ship to supposedly search for survivors. Suspicions were aroused when British intelligence learned that "Ophelia" was using a wireless radio set, at that time unusual for a hospital ship, to communicate with the German wireless base at Norddeich station. In addition to using wireless radio she was using coded wireless transmissions; secret codes or their use are forbidden on hospital ships. While in the area, British submarine, HMS "D8", shadowed the German ship. When the "Ophelia" noticed the sub she began to flee the area, further