PHOTO: 1998 vs 2013Greg Dragonetti July 20, 1998 May 27, 2013 Both involved the mooring deck. The bulk of the black smoke in both cases was due to the ignition of the polypropylene mooring lines. Related Posts Our Upcoming Cruise on the Discovery Princess A look ahead to our next trip Introduction to the Carnival Celebration Introduction to the Regal Princess The Recent Royal Caribbean Itinerary Changes and Why They Happened First Look: Swan Hellenic’s Newest Ship, SH Minerva