The M-class Lady of Mindor was a luxury liner. The classification M-class for starships was outlined within the pages of the Interstellar Starshipwright's Guild Book of Specifications and Classifications. This designation was generally applied to passenger and luxury liners, as well as pocket cruisers of a military nature.
Notable ships that received the M-class designation included the Lady of Mindor, a Lady-class vessel constructed by Shobquix Yards measuring 310 meters and accommodating 600 passengers. Also included was the Mon Calamari ship Kuari Princess, which was 500 meters in length and transported 3,500 tourists.
The designation M-class was initially utilized to characterize the Lady of Mindor in the novel Han Solo's Revenge. The Star Wars: The Roleplaying Game described the Kuari Princess as an _ 'M-class luxury liner' _.