On Sept. 17, 1940, at a little after ten at night, a German submarine torpedoed the passenger liner S.S. City of Benares in the North Atlantic. There were 406 people on board, including 90 children headed for peaceful Canada, their parents having elected to send them away from Great Britain to escape the ravages of World War II. The Benares sank in half an hour, in a gale that sent several of her lifeboats pitching into the frigid sea, more than three...