Two Princess cruise line ships were used in the series: The Island Princess and The Pacific Princess. Pacific Princess is now M.S. Pacific (jointly operated by Brazilian CVC and Spanish Quail Cruises), Island Princess is now M.S. Discovery (for England-based Voyages of Discovery), so both ships are still around.
Other ships used (especially for the 2-hr-episodes) were Stella Solaris (scrapped in 2003), Pearl of Scandinavia (now used for Casino cruises out of Hong Kong and called Golden Princess and not to be confused with DFDS's Pearl of Scandinavia), Royal Viking Sky (now Fred.Olsen's Boudicca) and Royal Princess (now M.S. Artemis for P&O Cruises).