    Sonioneo 1: As thé-double-decker-honts'get ready to  leave the pier: bells ring. the gangplank ig raised,  deckhands-in blié sailor-suits man. the hawsérs,  and a-cauple of.hundred commuters: ‘begin: a seven-  ‘minute sightseeing -tour,    Sentones 2: The Woukle decker boats are all but of  service, so they never leave.the pier.    