What’s the name of the cruise ship from The Love Boat?

The answer is: Pacific Princess. The MS Pacific Princess was a real boat owned and operated by Princess Cruises from 1975 to 2002. It was also the setting for the romantic-comedy-drama series, The Love Boat. Filming was sometimes completed on the boat itself for exterior shots (or its sister ship, the Island Princess), but most of the time they used sets, as I imagine filming an entire TV show on a cruise ship for nine seasons and several TV movies would have been a logistical nightmare.Source