SuperStar Aquarius at Hong Kong, China on February 10, 2011. Photo © Keith Henderson

  SuperStar Aquarius at Hong Kong, China on December 13, 2010. Photo © Ronald Waanders

  SuperStar Aquarius at Hong Kong, China on October 18, 2010. Photo © Bart de Boer

  SuperStar Aquarius at Hong Kong, China on January 31, 2010. Photo © Clive Harvey

  SuperStar Aquarius at Hong Kong, China on February 15, 2009. Photo © Gary Marshall-Gleghorn

  SuperStar Aquarius at Hong Kong, China on February 15, 2009. Photo © Gary Marshall-Gleghorn

  SuperStar Aquarius at Hong Kong, China on July 2, 2007. Photo © York Schreiber

  SuperStar Aquarius at Hong Kong, China on July 2, 2007. Photo © York Schreiber

  Norwegian Wind at Lahaina, Maui, Hawaii on October 27, 2006. Photo © Bart de Boer

  Norwegian Wind at Lahaina, Maui, Hawaii on October 27, 2006. Photo © Bart de Boer

  Norwegian Wind at Lahaina, Maui, Hawaii on October 27, 2006. Photo © Bart de Boer

  Norwegian Wind at Cozumel, Mexico on January 29, 2004. Photo © Carlo van der Vlis

  Norwegian Wind at Lahaina, Maui, Hawaii in December, 2002. Photo © Richard Santer

  Windward at Juneau, Alaska on September 13, 1995. Photo © Bart de Boer